./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa --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 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:58:59,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:58:59,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:58:59,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:58:59,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:58:59,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:58:59,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:58:59,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:58:59,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:58:59,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:58:59,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:58:59,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:58:59,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:58:59,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:58:59,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:58:59,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:58:59,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:58:59,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:58:59,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:58:59,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:58:59,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:58:59,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:58:59,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:58:59,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:58:59,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:58:59,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:58:59,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:58:59,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:58:59,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:58:59,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:58:59,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:58:59,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:58:59,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:58:59,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:58:59,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:58:59,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:58:59,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:58:59,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:58:59,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:58:59,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:58:59,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:58:59,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 22:58:59,216 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:58:59,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:58:59,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:58:59,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:58:59,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:58:59,217 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:58:59,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:58:59,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:58:59,218 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:58:59,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:58:59,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:58:59,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:58:59,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:58:59,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:58:59,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:58:59,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:58:59,219 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:58:59,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:58:59,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:58:59,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:58:59,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:58:59,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:58:59,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:58:59,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:58:59,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:58:59,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:58:59,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:58:59,220 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:58:59,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:58:59,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:58:59,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:58:59,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e [2021-12-06 22:58:59,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:58:59,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:58:59,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:58:59,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:58:59,417 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:58:59,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2021-12-06 22:58:59,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/data/9cdb0a392/511de7cdf951413193bd72b95b0dc1da/FLAG06be72ed1 [2021-12-06 22:59:00,071 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:59:00,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2021-12-06 22:59:00,103 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/data/9cdb0a392/511de7cdf951413193bd72b95b0dc1da/FLAG06be72ed1 [2021-12-06 22:59:00,493 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/data/9cdb0a392/511de7cdf951413193bd72b95b0dc1da [2021-12-06 22:59:00,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:59:00,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:59:00,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:59:00,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:59:00,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:59:00,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:59:00" (1/1) ... [2021-12-06 22:59:00,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7236415a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:00, skipping insertion in model container [2021-12-06 22:59:00,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:59:00" (1/1) ... [2021-12-06 22:59:00,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:59:00,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:59:00,964 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2021-12-06 22:59:01,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:59:01,532 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:59:01,597 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2021-12-06 22:59:01,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:59:01,783 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:59:01,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:01 WrapperNode [2021-12-06 22:59:01,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:59:01,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:59:01,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:59:01,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:59:01,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:01" (1/1) ... [2021-12-06 22:59:01,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:01" (1/1) ... [2021-12-06 22:59:01,933 INFO L137 Inliner]: procedures = 184, calls = 828, calls flagged for inlining = 92, calls inlined = 90, statements flattened = 3179 [2021-12-06 22:59:01,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:59:01,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:59:01,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:59:01,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:59:01,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:01" (1/1) ... [2021-12-06 22:59:01,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:01" (1/1) ... [2021-12-06 22:59:01,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:01" (1/1) ... [2021-12-06 22:59:01,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:01" (1/1) ... [2021-12-06 22:59:02,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:01" (1/1) ... [2021-12-06 22:59:02,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:01" (1/1) ... [2021-12-06 22:59:02,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:01" (1/1) ... [2021-12-06 22:59:02,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:59:02,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:59:02,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:59:02,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:59:02,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:01" (1/1) ... [2021-12-06 22:59:02,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:59:02,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:02,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:59:02,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:59:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2021-12-06 22:59:02,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2021-12-06 22:59:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2021-12-06 22:59:02,131 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2021-12-06 22:59:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 22:59:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-06 22:59:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-06 22:59:02,132 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-06 22:59:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 22:59:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 22:59:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 22:59:02,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 22:59:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:59:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-06 22:59:02,132 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-06 22:59:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-06 22:59:02,132 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-06 22:59:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-12-06 22:59:02,132 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-12-06 22:59:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 22:59:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 22:59:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-06 22:59:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-06 22:59:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 22:59:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 22:59:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-06 22:59:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-06 22:59:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-06 22:59:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-06 22:59:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 22:59:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 22:59:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2021-12-06 22:59:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2021-12-06 22:59:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:59:02,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 22:59:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 22:59:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 22:59:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 22:59:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-06 22:59:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-06 22:59:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 22:59:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 22:59:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-06 22:59:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-06 22:59:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-06 22:59:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-06 22:59:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:59:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-06 22:59:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-06 22:59:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2021-12-06 22:59:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2021-12-06 22:59:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2021-12-06 22:59:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2021-12-06 22:59:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:59:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-06 22:59:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-06 22:59:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2021-12-06 22:59:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2021-12-06 22:59:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:59:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:59:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 22:59:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-06 22:59:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-06 22:59:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2021-12-06 22:59:02,136 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2021-12-06 22:59:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-06 22:59:02,136 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-06 22:59:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2021-12-06 22:59:02,136 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2021-12-06 22:59:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:59:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-06 22:59:02,136 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-06 22:59:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-06 22:59:02,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-06 22:59:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-06 22:59:02,136 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-06 22:59:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2021-12-06 22:59:02,136 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2021-12-06 22:59:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2021-12-06 22:59:02,137 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2021-12-06 22:59:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:59:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-12-06 22:59:02,137 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-12-06 22:59:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 22:59:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2021-12-06 22:59:02,137 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2021-12-06 22:59:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-06 22:59:02,137 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-06 22:59:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2021-12-06 22:59:02,137 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2021-12-06 22:59:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 22:59:02,137 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 22:59:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-06 22:59:02,137 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-06 22:59:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2021-12-06 22:59:02,138 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2021-12-06 22:59:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-12-06 22:59:02,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-12-06 22:59:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-06 22:59:02,138 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-06 22:59:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-06 22:59:02,138 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-06 22:59:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-06 22:59:02,138 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-06 22:59:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-06 22:59:02,138 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-06 22:59:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:59:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-06 22:59:02,138 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-06 22:59:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-12-06 22:59:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-12-06 22:59:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-12-06 22:59:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-12-06 22:59:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 22:59:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 22:59:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 22:59:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:59:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:59:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2021-12-06 22:59:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2021-12-06 22:59:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-06 22:59:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-06 22:59:02,464 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:59:02,467 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:59:02,621 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 22:59:04,408 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:59:04,426 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:59:04,426 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:59:04,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:59:04 BoogieIcfgContainer [2021-12-06 22:59:04,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:59:04,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:59:04,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:59:04,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:59:04,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:59:00" (1/3) ... [2021-12-06 22:59:04,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431adc7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:59:04, skipping insertion in model container [2021-12-06 22:59:04,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:01" (2/3) ... [2021-12-06 22:59:04,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431adc7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:59:04, skipping insertion in model container [2021-12-06 22:59:04,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:59:04" (3/3) ... [2021-12-06 22:59:04,435 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2021-12-06 22:59:04,439 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:59:04,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:59:04,480 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:59:04,485 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:59:04,485 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:59:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 1086 states, 804 states have (on average 1.4291044776119404) internal successors, (1149), 837 states have internal predecessors, (1149), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2021-12-06 22:59:04,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 22:59:04,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:04,528 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:04,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1674136558, now seen corresponding path program 1 times [2021-12-06 22:59:04,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:04,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485348316] [2021-12-06 22:59:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:04,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:04,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:04,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:04,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:04,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-06 22:59:04,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:04,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485348316] [2021-12-06 22:59:04,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485348316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:04,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:04,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:59:04,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976885313] [2021-12-06 22:59:04,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:04,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:59:04,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:04,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:59:04,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:59:04,945 INFO L87 Difference]: Start difference. First operand has 1086 states, 804 states have (on average 1.4291044776119404) internal successors, (1149), 837 states have internal predecessors, (1149), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 22:59:07,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:09,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:09,180 INFO L93 Difference]: Finished difference Result 2922 states and 4363 transitions. [2021-12-06 22:59:09,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:59:09,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2021-12-06 22:59:09,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:09,208 INFO L225 Difference]: With dead ends: 2922 [2021-12-06 22:59:09,208 INFO L226 Difference]: Without dead ends: 1756 [2021-12-06 22:59:09,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:59:09,219 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 1443 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:09,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1569 Valid, 3436 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-06 22:59:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2021-12-06 22:59:09,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1600. [2021-12-06 22:59:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1178 states have (on average 1.403225806451613) internal successors, (1653), 1211 states have internal predecessors, (1653), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2021-12-06 22:59:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2318 transitions. [2021-12-06 22:59:09,357 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2318 transitions. Word has length 63 [2021-12-06 22:59:09,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:09,358 INFO L470 AbstractCegarLoop]: Abstraction has 1600 states and 2318 transitions. [2021-12-06 22:59:09,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 22:59:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2318 transitions. [2021-12-06 22:59:09,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 22:59:09,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:09,367 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-06 22:59:09,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:59:09,368 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:09,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:09,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2079290676, now seen corresponding path program 1 times [2021-12-06 22:59:09,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:09,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256751253] [2021-12-06 22:59:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:09,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:09,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:09,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:59:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:09,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:59:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-06 22:59:09,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:09,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256751253] [2021-12-06 22:59:09,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256751253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:09,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:09,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:59:09,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981073146] [2021-12-06 22:59:09,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:09,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:59:09,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:09,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:59:09,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:59:09,597 INFO L87 Difference]: Start difference. First operand 1600 states and 2318 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:59:10,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:12,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:13,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:13,646 INFO L93 Difference]: Finished difference Result 3366 states and 4935 transitions. [2021-12-06 22:59:13,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:59:13,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2021-12-06 22:59:13,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:13,669 INFO L225 Difference]: With dead ends: 3366 [2021-12-06 22:59:13,670 INFO L226 Difference]: Without dead ends: 1790 [2021-12-06 22:59:13,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:13,678 INFO L933 BasicCegarLoop]: 1468 mSDtfsCounter, 2268 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 822 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 822 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:13,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2400 Valid, 2064 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [822 Valid, 492 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-12-06 22:59:13,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-12-06 22:59:13,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1600. [2021-12-06 22:59:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1178 states have (on average 1.401528013582343) internal successors, (1651), 1211 states have internal predecessors, (1651), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2021-12-06 22:59:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2316 transitions. [2021-12-06 22:59:13,758 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2316 transitions. Word has length 104 [2021-12-06 22:59:13,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:13,759 INFO L470 AbstractCegarLoop]: Abstraction has 1600 states and 2316 transitions. [2021-12-06 22:59:13,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:59:13,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2316 transitions. [2021-12-06 22:59:13,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 22:59:13,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:13,764 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-06 22:59:13,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:59:13,765 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:13,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:13,765 INFO L85 PathProgramCache]: Analyzing trace with hash 187090510, now seen corresponding path program 1 times [2021-12-06 22:59:13,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:13,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701996662] [2021-12-06 22:59:13,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:13,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:59:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:59:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-06 22:59:13,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:13,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701996662] [2021-12-06 22:59:13,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701996662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:13,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:13,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:59:13,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254656202] [2021-12-06 22:59:13,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:13,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:59:13,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:13,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:59:13,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:59:13,908 INFO L87 Difference]: Start difference. First operand 1600 states and 2316 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:59:16,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:16,934 INFO L93 Difference]: Finished difference Result 3370 states and 4935 transitions. [2021-12-06 22:59:16,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:59:16,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2021-12-06 22:59:16,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:16,944 INFO L225 Difference]: With dead ends: 3370 [2021-12-06 22:59:16,944 INFO L226 Difference]: Without dead ends: 1790 [2021-12-06 22:59:16,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:16,950 INFO L933 BasicCegarLoop]: 1479 mSDtfsCounter, 1008 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 4229 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:16,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 4229 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 22:59:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-12-06 22:59:16,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1600. [2021-12-06 22:59:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1178 states have (on average 1.399830220713073) internal successors, (1649), 1211 states have internal predecessors, (1649), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2021-12-06 22:59:17,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2314 transitions. [2021-12-06 22:59:17,007 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2314 transitions. Word has length 104 [2021-12-06 22:59:17,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:17,008 INFO L470 AbstractCegarLoop]: Abstraction has 1600 states and 2314 transitions. [2021-12-06 22:59:17,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:59:17,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2314 transitions. [2021-12-06 22:59:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 22:59:17,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:17,012 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-06 22:59:17,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:59:17,012 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:17,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:17,012 INFO L85 PathProgramCache]: Analyzing trace with hash -540695394, now seen corresponding path program 1 times [2021-12-06 22:59:17,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:17,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065735024] [2021-12-06 22:59:17,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:17,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-06 22:59:17,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:17,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065735024] [2021-12-06 22:59:17,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065735024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:17,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:17,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:59:17,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221006575] [2021-12-06 22:59:17,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:17,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:59:17,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:17,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:59:17,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:59:17,149 INFO L87 Difference]: Start difference. First operand 1600 states and 2314 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 22:59:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:20,715 INFO L93 Difference]: Finished difference Result 2381 states and 3634 transitions. [2021-12-06 22:59:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:59:20,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 107 [2021-12-06 22:59:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:20,727 INFO L225 Difference]: With dead ends: 2381 [2021-12-06 22:59:20,727 INFO L226 Difference]: Without dead ends: 2378 [2021-12-06 22:59:20,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:20,729 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 1343 mSDsluCounter, 4423 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:20,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1465 Valid, 6532 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 2113 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-06 22:59:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2021-12-06 22:59:20,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 1602. [2021-12-06 22:59:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1180 states have (on average 1.3991525423728814) internal successors, (1651), 1213 states have internal predecessors, (1651), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2021-12-06 22:59:20,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2316 transitions. [2021-12-06 22:59:20,799 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2316 transitions. Word has length 107 [2021-12-06 22:59:20,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:20,800 INFO L470 AbstractCegarLoop]: Abstraction has 1602 states and 2316 transitions. [2021-12-06 22:59:20,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 22:59:20,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2316 transitions. [2021-12-06 22:59:20,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-06 22:59:20,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:20,804 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-06 22:59:20,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:59:20,804 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:20,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:20,805 INFO L85 PathProgramCache]: Analyzing trace with hash -756513172, now seen corresponding path program 1 times [2021-12-06 22:59:20,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:20,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979365540] [2021-12-06 22:59:20,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:20,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:20,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:59:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-06 22:59:21,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:21,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979365540] [2021-12-06 22:59:21,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979365540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:21,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:21,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:59:21,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443479643] [2021-12-06 22:59:21,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:21,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:59:21,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:21,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:59:21,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:59:21,029 INFO L87 Difference]: Start difference. First operand 1602 states and 2316 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:59:22,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:24,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:24,732 INFO L93 Difference]: Finished difference Result 3959 states and 5919 transitions. [2021-12-06 22:59:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:59:24,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-12-06 22:59:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:24,744 INFO L225 Difference]: With dead ends: 3959 [2021-12-06 22:59:24,744 INFO L226 Difference]: Without dead ends: 2381 [2021-12-06 22:59:24,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:59:24,749 INFO L933 BasicCegarLoop]: 1832 mSDtfsCounter, 2436 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 4174 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:24,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2694 Valid, 4174 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-06 22:59:24,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2021-12-06 22:59:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1603. [2021-12-06 22:59:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1181 states have (on average 1.3988145639288738) internal successors, (1652), 1214 states have internal predecessors, (1652), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2021-12-06 22:59:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 2317 transitions. [2021-12-06 22:59:24,812 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 2317 transitions. Word has length 117 [2021-12-06 22:59:24,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:24,812 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 2317 transitions. [2021-12-06 22:59:24,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:59:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 2317 transitions. [2021-12-06 22:59:24,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 22:59:24,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:24,817 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-06 22:59:24,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:59:24,817 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:24,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:24,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1902158187, now seen corresponding path program 1 times [2021-12-06 22:59:24,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:24,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635023931] [2021-12-06 22:59:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:24,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:59:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-06 22:59:24,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:24,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635023931] [2021-12-06 22:59:24,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635023931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:24,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:24,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:24,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113035409] [2021-12-06 22:59:24,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:24,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:24,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:24,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:24,967 INFO L87 Difference]: Start difference. First operand 1603 states and 2317 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:59:29,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:29,096 INFO L93 Difference]: Finished difference Result 3313 states and 5203 transitions. [2021-12-06 22:59:29,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:59:29,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2021-12-06 22:59:29,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:29,113 INFO L225 Difference]: With dead ends: 3313 [2021-12-06 22:59:29,113 INFO L226 Difference]: Without dead ends: 3310 [2021-12-06 22:59:29,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:59:29,115 INFO L933 BasicCegarLoop]: 2553 mSDtfsCounter, 2187 mSDsluCounter, 7206 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 808 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 9759 SdHoareTripleChecker+Invalid, 3852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 808 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:29,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2404 Valid, 9759 Invalid, 3852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [808 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-06 22:59:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2021-12-06 22:59:29,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 1605. [2021-12-06 22:59:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1182 states have (on average 1.398477157360406) internal successors, (1653), 1214 states have internal predecessors, (1653), 334 states have call successors, (334), 89 states have call predecessors, (334), 88 states have return successors, (333), 330 states have call predecessors, (333), 333 states have call successors, (333) [2021-12-06 22:59:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2320 transitions. [2021-12-06 22:59:29,195 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2320 transitions. Word has length 119 [2021-12-06 22:59:29,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:29,196 INFO L470 AbstractCegarLoop]: Abstraction has 1605 states and 2320 transitions. [2021-12-06 22:59:29,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:59:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2320 transitions. [2021-12-06 22:59:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-06 22:59:29,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:29,202 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:29,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:59:29,202 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:29,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash 647562230, now seen corresponding path program 1 times [2021-12-06 22:59:29,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:29,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171706019] [2021-12-06 22:59:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:29,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:59:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:59:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 22:59:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:59:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:59:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-06 22:59:29,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:29,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171706019] [2021-12-06 22:59:29,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171706019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:29,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:29,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:59:29,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210125449] [2021-12-06 22:59:29,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:29,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:59:29,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:29,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:59:29,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:59:29,397 INFO L87 Difference]: Start difference. First operand 1605 states and 2320 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:31,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:33,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:34,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:34,606 INFO L93 Difference]: Finished difference Result 3999 states and 5840 transitions. [2021-12-06 22:59:34,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:59:34,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2021-12-06 22:59:34,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:34,617 INFO L225 Difference]: With dead ends: 3999 [2021-12-06 22:59:34,617 INFO L226 Difference]: Without dead ends: 2418 [2021-12-06 22:59:34,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:34,621 INFO L933 BasicCegarLoop]: 2205 mSDtfsCounter, 2289 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 886 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2472 SdHoareTripleChecker+Valid, 3668 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 886 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:34,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2472 Valid, 3668 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [886 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-06 22:59:34,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2021-12-06 22:59:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2145. [2021-12-06 22:59:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 1571 states have (on average 1.3908338637810311) internal successors, (2185), 1612 states have internal predecessors, (2185), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2021-12-06 22:59:34,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3080 transitions. [2021-12-06 22:59:34,710 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3080 transitions. Word has length 149 [2021-12-06 22:59:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:34,710 INFO L470 AbstractCegarLoop]: Abstraction has 2145 states and 3080 transitions. [2021-12-06 22:59:34,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:34,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3080 transitions. [2021-12-06 22:59:34,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 22:59:34,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:34,719 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:34,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:59:34,720 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:34,720 INFO L85 PathProgramCache]: Analyzing trace with hash -713832836, now seen corresponding path program 1 times [2021-12-06 22:59:34,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:34,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544982520] [2021-12-06 22:59:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:34,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:59:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:59:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:59:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:59:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:59:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-06 22:59:34,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:34,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544982520] [2021-12-06 22:59:34,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544982520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:34,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:34,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:59:34,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243560338] [2021-12-06 22:59:34,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:34,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:59:34,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:59:34,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:59:34,902 INFO L87 Difference]: Start difference. First operand 2145 states and 3080 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:37,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:38,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:40,300 INFO L93 Difference]: Finished difference Result 4588 states and 6826 transitions. [2021-12-06 22:59:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:59:40,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2021-12-06 22:59:40,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:40,314 INFO L225 Difference]: With dead ends: 4588 [2021-12-06 22:59:40,314 INFO L226 Difference]: Without dead ends: 3007 [2021-12-06 22:59:40,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:59:40,319 INFO L933 BasicCegarLoop]: 2004 mSDtfsCounter, 2280 mSDsluCounter, 2602 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 4606 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:40,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2530 Valid, 4606 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-12-06 22:59:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2021-12-06 22:59:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 2149. [2021-12-06 22:59:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1575 states have (on average 1.3904761904761904) internal successors, (2190), 1616 states have internal predecessors, (2190), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2021-12-06 22:59:40,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3085 transitions. [2021-12-06 22:59:40,431 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3085 transitions. Word has length 151 [2021-12-06 22:59:40,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:40,432 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3085 transitions. [2021-12-06 22:59:40,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 22:59:40,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3085 transitions. [2021-12-06 22:59:40,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-06 22:59:40,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:40,441 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:40,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:59:40,441 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:40,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:40,442 INFO L85 PathProgramCache]: Analyzing trace with hash -134166477, now seen corresponding path program 1 times [2021-12-06 22:59:40,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:40,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239136891] [2021-12-06 22:59:40,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:40,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:59:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 22:59:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:59:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 22:59:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 22:59:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-06 22:59:40,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:40,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239136891] [2021-12-06 22:59:40,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239136891] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:40,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:40,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:59:40,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700782222] [2021-12-06 22:59:40,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:40,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:59:40,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:40,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:59:40,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:59:40,575 INFO L87 Difference]: Start difference. First operand 2149 states and 3085 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:42,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:42,966 INFO L93 Difference]: Finished difference Result 4548 states and 6642 transitions. [2021-12-06 22:59:42,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:59:42,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2021-12-06 22:59:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:42,977 INFO L225 Difference]: With dead ends: 4548 [2021-12-06 22:59:42,977 INFO L226 Difference]: Without dead ends: 2423 [2021-12-06 22:59:42,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:59:42,982 INFO L933 BasicCegarLoop]: 1474 mSDtfsCounter, 995 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:42,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 3154 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 22:59:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2021-12-06 22:59:43,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2149. [2021-12-06 22:59:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1575 states have (on average 1.3847619047619049) internal successors, (2181), 1616 states have internal predecessors, (2181), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2021-12-06 22:59:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3076 transitions. [2021-12-06 22:59:43,068 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3076 transitions. Word has length 154 [2021-12-06 22:59:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:43,069 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3076 transitions. [2021-12-06 22:59:43,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 22:59:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3076 transitions. [2021-12-06 22:59:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 22:59:43,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:43,078 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:43,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:59:43,078 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:43,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:43,079 INFO L85 PathProgramCache]: Analyzing trace with hash -394171254, now seen corresponding path program 1 times [2021-12-06 22:59:43,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:43,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535248075] [2021-12-06 22:59:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:43,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:59:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 22:59:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:59:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 22:59:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 22:59:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-06 22:59:43,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:43,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535248075] [2021-12-06 22:59:43,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535248075] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:43,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974328271] [2021-12-06 22:59:43,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:43,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:43,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:43,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:43,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:59:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:43,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:59:43,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-06 22:59:43,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:59:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-06 22:59:43,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974328271] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:59:43,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:59:43,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 5] total 12 [2021-12-06 22:59:43,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865721632] [2021-12-06 22:59:43,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:59:43,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:59:43,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:43,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:59:43,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:59:43,974 INFO L87 Difference]: Start difference. First operand 2149 states and 3076 transitions. Second operand has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 10 states have internal predecessors, (185), 4 states have call successors, (45), 5 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) [2021-12-06 22:59:47,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:50,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:50,274 INFO L93 Difference]: Finished difference Result 6342 states and 9749 transitions. [2021-12-06 22:59:50,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:59:50,275 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 10 states have internal predecessors, (185), 4 states have call successors, (45), 5 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) Word has length 157 [2021-12-06 22:59:50,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:50,297 INFO L225 Difference]: With dead ends: 6342 [2021-12-06 22:59:50,298 INFO L226 Difference]: Without dead ends: 4757 [2021-12-06 22:59:50,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:59:50,303 INFO L933 BasicCegarLoop]: 2561 mSDtfsCounter, 5642 mSDsluCounter, 4721 mSDsCounter, 0 mSdLazyCounter, 4302 mSolverCounterSat, 2063 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6019 SdHoareTripleChecker+Valid, 7282 SdHoareTripleChecker+Invalid, 6366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2063 IncrementalHoareTripleChecker+Valid, 4302 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:50,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6019 Valid, 7282 Invalid, 6366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2063 Valid, 4302 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-12-06 22:59:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2021-12-06 22:59:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2156. [2021-12-06 22:59:50,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1582 states have (on average 1.384323640960809) internal successors, (2190), 1623 states have internal predecessors, (2190), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2021-12-06 22:59:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3085 transitions. [2021-12-06 22:59:50,423 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3085 transitions. Word has length 157 [2021-12-06 22:59:50,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:50,423 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3085 transitions. [2021-12-06 22:59:50,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.416666666666666) internal successors, (185), 10 states have internal predecessors, (185), 4 states have call successors, (45), 5 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) [2021-12-06 22:59:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3085 transitions. [2021-12-06 22:59:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-06 22:59:50,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:50,431 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:50,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:59:50,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:50,632 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:50,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:50,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1286483840, now seen corresponding path program 1 times [2021-12-06 22:59:50,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:50,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068332389] [2021-12-06 22:59:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:50,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:59:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:59:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:59:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:59:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:59:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 22:59:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-06 22:59:50,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:50,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068332389] [2021-12-06 22:59:50,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068332389] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:50,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235054511] [2021-12-06 22:59:50,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:50,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:50,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:50,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:50,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:59:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:51,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 22:59:51,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-06 22:59:51,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:59:51,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235054511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:51,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:59:51,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2021-12-06 22:59:51,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460647619] [2021-12-06 22:59:51,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:51,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:59:51,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:51,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:59:51,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:59:51,377 INFO L87 Difference]: Start difference. First operand 2156 states and 3085 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 22:59:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:51,700 INFO L93 Difference]: Finished difference Result 4678 states and 6864 transitions. [2021-12-06 22:59:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:59:51,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2021-12-06 22:59:51,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:51,715 INFO L225 Difference]: With dead ends: 4678 [2021-12-06 22:59:51,715 INFO L226 Difference]: Without dead ends: 3086 [2021-12-06 22:59:51,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:59:51,721 INFO L933 BasicCegarLoop]: 2241 mSDtfsCounter, 865 mSDsluCounter, 3650 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 5891 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:51,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 5891 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:59:51,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2021-12-06 22:59:51,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 2158. [2021-12-06 22:59:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 1584 states have (on average 1.3838383838383839) internal successors, (2192), 1625 states have internal predecessors, (2192), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2021-12-06 22:59:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 3087 transitions. [2021-12-06 22:59:51,819 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 3087 transitions. Word has length 166 [2021-12-06 22:59:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:51,819 INFO L470 AbstractCegarLoop]: Abstraction has 2158 states and 3087 transitions. [2021-12-06 22:59:51,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 22:59:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 3087 transitions. [2021-12-06 22:59:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 22:59:51,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:51,826 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:51,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:59:52,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:52,027 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:52,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash 200803734, now seen corresponding path program 1 times [2021-12-06 22:59:52,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:52,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411894977] [2021-12-06 22:59:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:52,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:59:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:59:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:59:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:59:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 22:59:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:59:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:59:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 22:59:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-12-06 22:59:52,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:52,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411894977] [2021-12-06 22:59:52,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411894977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:52,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:52,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:59:52,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113566227] [2021-12-06 22:59:52,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:52,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:59:52,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:52,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:59:52,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:59:52,197 INFO L87 Difference]: Start difference. First operand 2158 states and 3087 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:59:54,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:59:57,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:57,301 INFO L93 Difference]: Finished difference Result 4654 states and 6903 transitions. [2021-12-06 22:59:57,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:59:57,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 175 [2021-12-06 22:59:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:57,310 INFO L225 Difference]: With dead ends: 4654 [2021-12-06 22:59:57,310 INFO L226 Difference]: Without dead ends: 3060 [2021-12-06 22:59:57,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:59:57,314 INFO L933 BasicCegarLoop]: 1979 mSDtfsCounter, 1533 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 713 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 5357 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:57,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 5357 Invalid, 3001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 2287 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-12-06 22:59:57,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2021-12-06 22:59:57,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 2160. [2021-12-06 22:59:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 1586 states have (on average 1.3833543505674653) internal successors, (2194), 1627 states have internal predecessors, (2194), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2021-12-06 22:59:57,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 3089 transitions. [2021-12-06 22:59:57,420 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 3089 transitions. Word has length 175 [2021-12-06 22:59:57,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:57,420 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 3089 transitions. [2021-12-06 22:59:57,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:59:57,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 3089 transitions. [2021-12-06 22:59:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 22:59:57,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:57,427 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:57,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:59:57,427 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:57,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:57,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1759072087, now seen corresponding path program 1 times [2021-12-06 22:59:57,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:57,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661248677] [2021-12-06 22:59:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:57,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:59:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:59:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:59:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:59:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:59:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 22:59:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 22:59:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:59:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 22:59:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-06 22:59:57,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:57,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661248677] [2021-12-06 22:59:57,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661248677] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:57,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939277931] [2021-12-06 22:59:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:57,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:57,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:57,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:57,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:59:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:58,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 22:59:58,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-06 22:59:58,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:59:58,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939277931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:58,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:59:58,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 15 [2021-12-06 22:59:58,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238065256] [2021-12-06 22:59:58,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:58,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:59:58,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:58,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:59:58,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:59:58,215 INFO L87 Difference]: Start difference. First operand 2160 states and 3089 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 22:59:58,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:58,584 INFO L93 Difference]: Finished difference Result 4851 states and 7125 transitions. [2021-12-06 22:59:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:59:58,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 183 [2021-12-06 22:59:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:58,595 INFO L225 Difference]: With dead ends: 4851 [2021-12-06 22:59:58,595 INFO L226 Difference]: Without dead ends: 3255 [2021-12-06 22:59:58,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:59:58,599 INFO L933 BasicCegarLoop]: 2274 mSDtfsCounter, 1174 mSDsluCounter, 8342 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 10616 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:58,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 10616 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:59:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2021-12-06 22:59:58,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 2165. [2021-12-06 22:59:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2165 states, 1590 states have (on average 1.3823899371069182) internal successors, (2198), 1631 states have internal predecessors, (2198), 448 states have call successors, (448), 126 states have call predecessors, (448), 126 states have return successors, (451), 443 states have call predecessors, (451), 447 states have call successors, (451) [2021-12-06 22:59:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 3097 transitions. [2021-12-06 22:59:58,717 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 3097 transitions. Word has length 183 [2021-12-06 22:59:58,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:58,717 INFO L470 AbstractCegarLoop]: Abstraction has 2165 states and 3097 transitions. [2021-12-06 22:59:58,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 22:59:58,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 3097 transitions. [2021-12-06 22:59:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-06 22:59:58,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:58,724 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:58,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:59:58,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 22:59:58,925 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:58,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:58,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1813132628, now seen corresponding path program 1 times [2021-12-06 22:59:58,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:58,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788817659] [2021-12-06 22:59:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:58,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:59:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:59:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:59:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:59:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:59:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:59:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 22:59:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:59:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 22:59:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 22:59:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 22:59:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 22:59:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 22:59:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-06 22:59:59,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:59,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788817659] [2021-12-06 22:59:59,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788817659] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:59,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726848629] [2021-12-06 22:59:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:59,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:59,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:59,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:59,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:59:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-06 22:59:59,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-06 22:59:59,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:59:59,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726848629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:59,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:59:59,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 12 [2021-12-06 22:59:59,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332389469] [2021-12-06 22:59:59,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:59,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:59:59,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:59,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:59:59,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:59:59,658 INFO L87 Difference]: Start difference. First operand 2165 states and 3097 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:59:59,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:59,863 INFO L93 Difference]: Finished difference Result 3792 states and 5442 transitions. [2021-12-06 22:59:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:59:59,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) Word has length 189 [2021-12-06 22:59:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:59,870 INFO L225 Difference]: With dead ends: 3792 [2021-12-06 22:59:59,870 INFO L226 Difference]: Without dead ends: 2183 [2021-12-06 22:59:59,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:59:59,874 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 798 mSDsluCounter, 11495 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 13162 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:59,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 13162 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:59:59,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2021-12-06 22:59:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 2181. [2021-12-06 22:59:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 1601 states have (on average 1.3797626483447845) internal successors, (2209), 1644 states have internal predecessors, (2209), 448 states have call successors, (448), 126 states have call predecessors, (448), 131 states have return successors, (465), 446 states have call predecessors, (465), 447 states have call successors, (465) [2021-12-06 22:59:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3122 transitions. [2021-12-06 22:59:59,979 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3122 transitions. Word has length 189 [2021-12-06 22:59:59,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:59,979 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 3122 transitions. [2021-12-06 22:59:59,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:59:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3122 transitions. [2021-12-06 22:59:59,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-06 22:59:59,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:59,985 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:00:00,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 23:00:00,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 23:00:00,187 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:00:00,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:00:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1609800849, now seen corresponding path program 1 times [2021-12-06 23:00:00,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:00:00,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760461283] [2021-12-06 23:00:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:00:00,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:00:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:00:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:00:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:00:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:00:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:00:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:00:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 23:00:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 23:00:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:00:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:00:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 23:00:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:00:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 23:00:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 23:00:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:00:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:01,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 23:00:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:02,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 23:00:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:02,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 23:00:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:02,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 23:00:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:02,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 23:00:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-06 23:00:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:02,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 23:00:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-06 23:00:02,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:00:02,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760461283] [2021-12-06 23:00:02,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760461283] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:00:02,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123840557] [2021-12-06 23:00:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:00:02,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:00:02,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:00:02,063 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:00:02,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:00:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:02,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 183 conjunts are in the unsatisfiable core [2021-12-06 23:00:02,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:00:02,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:00:03,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 23:00:03,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 23:00:03,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:03,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:03,460 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:00:03,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2021-12-06 23:00:03,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 23:00:03,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 23:00:03,731 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:00:03,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 23:00:03,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:00:04,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-12-06 23:00:04,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:00:04,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:00:04,302 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-06 23:00:04,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 23:00:04,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-06 23:00:04,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 33 [2021-12-06 23:00:04,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 42 [2021-12-06 23:00:04,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2021-12-06 23:00:04,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-12-06 23:00:04,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2021-12-06 23:00:04,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 48 [2021-12-06 23:00:04,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:04,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2021-12-06 23:00:04,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2021-12-06 23:00:04,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-12-06 23:00:04,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 23:00:05,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:05,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-06 23:00:05,169 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-12-06 23:00:05,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 51 [2021-12-06 23:00:05,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 23:00:05,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2021-12-06 23:00:05,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:05,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:05,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:05,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2021-12-06 23:00:05,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-12-06 23:00:05,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:05,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:05,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:05,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2021-12-06 23:00:05,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:05,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-06 23:00:05,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:05,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:05,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:05,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-06 23:00:05,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:05,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-06 23:00:05,998 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-12-06 23:00:05,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 45 [2021-12-06 23:00:06,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:06,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:06,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-06 23:00:06,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:06,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:06,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 104 [2021-12-06 23:00:06,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:06,608 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 23:00:06,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 79 [2021-12-06 23:00:06,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:00:06,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 29 [2021-12-06 23:00:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 64 proven. 13 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-06 23:00:06,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:00:06,713 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1043 (Array Int Int)) (v_ArrVal_1042 (Array Int Int)) (v_ArrVal_1041 (Array Int Int))) (let ((.cse0 (mod (let ((.cse1 (+ |c_ULTIMATE.start_slip_open_~sl~12#1.offset| 12))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1043) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1041) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1)) (+ 112 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1042) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1)))) 4294967296))) (or (<= .cse0 0) (< 2147483647 .cse0)))) is different from false [2021-12-06 23:00:06,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123840557] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:00:06,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:00:06,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 36] total 68 [2021-12-06 23:00:06,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582021244] [2021-12-06 23:00:06,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:00:06,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-12-06 23:00:06,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:00:06,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-12-06 23:00:06,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=4357, Unknown=1, NotChecked=132, Total=4692 [2021-12-06 23:00:06,726 INFO L87 Difference]: Start difference. First operand 2181 states and 3122 transitions. Second operand has 68 states, 66 states have (on average 3.4696969696969697) internal successors, (229), 54 states have internal predecessors, (229), 22 states have call successors, (45), 13 states have call predecessors, (45), 17 states have return successors, (37), 25 states have call predecessors, (37), 21 states have call successors, (37) [2021-12-06 23:00:23,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:00:25,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:00:27,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:00:29,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:00:38,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:00:44,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:00:52,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:00:54,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:00:56,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:00:59,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:01:02,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:01:04,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:02:11,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:09:32,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:32,382 INFO L93 Difference]: Finished difference Result 106766 states and 187694 transitions. [2021-12-06 23:09:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 906 states. [2021-12-06 23:09:32,382 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 66 states have (on average 3.4696969696969697) internal successors, (229), 54 states have internal predecessors, (229), 22 states have call successors, (45), 13 states have call predecessors, (45), 17 states have return successors, (37), 25 states have call predecessors, (37), 21 states have call successors, (37) Word has length 195 [2021-12-06 23:09:32,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:32,909 INFO L225 Difference]: With dead ends: 106766 [2021-12-06 23:09:32,910 INFO L226 Difference]: Without dead ends: 106763 [2021-12-06 23:09:33,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1464 GetRequests, 482 SyntacticMatches, 21 SemanticMatches, 961 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 412221 ImplicationChecksByTransitivity, 65.2s TimeCoverageRelationStatistics Valid=53360, Invalid=871125, Unknown=1, NotChecked=1920, Total=926406 [2021-12-06 23:09:33,098 INFO L933 BasicCegarLoop]: 20793 mSDtfsCounter, 67010 mSDsluCounter, 645962 mSDsCounter, 0 mSdLazyCounter, 731484 mSolverCounterSat, 196281 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 383.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67499 SdHoareTripleChecker+Valid, 666755 SdHoareTripleChecker+Invalid, 1031416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.3s SdHoareTripleChecker+Time, 196281 IncrementalHoareTripleChecker+Valid, 731484 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 103643 IncrementalHoareTripleChecker+Unchecked, 439.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:33,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67499 Valid, 666755 Invalid, 1031416 Unknown, 0 Unchecked, 3.3s Time], IncrementalHoareTripleChecker [196281 Valid, 731484 Invalid, 8 Unknown, 103643 Unchecked, 439.4s Time] [2021-12-06 23:09:33,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106763 states. [2021-12-06 23:09:37,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106763 to 11046. [2021-12-06 23:09:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11046 states, 8208 states have (on average 1.41593567251462) internal successors, (11622), 8504 states have internal predecessors, (11622), 2251 states have call successors, (2251), 547 states have call predecessors, (2251), 586 states have return successors, (2480), 2173 states have call predecessors, (2480), 2250 states have call successors, (2480) [2021-12-06 23:09:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11046 states to 11046 states and 16353 transitions. [2021-12-06 23:09:37,654 INFO L78 Accepts]: Start accepts. Automaton has 11046 states and 16353 transitions. Word has length 195 [2021-12-06 23:09:37,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:37,655 INFO L470 AbstractCegarLoop]: Abstraction has 11046 states and 16353 transitions. [2021-12-06 23:09:37,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 66 states have (on average 3.4696969696969697) internal successors, (229), 54 states have internal predecessors, (229), 22 states have call successors, (45), 13 states have call predecessors, (45), 17 states have return successors, (37), 25 states have call predecessors, (37), 21 states have call successors, (37) [2021-12-06 23:09:37,655 INFO L276 IsEmpty]: Start isEmpty. Operand 11046 states and 16353 transitions. [2021-12-06 23:09:37,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-12-06 23:09:37,675 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:37,676 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:37,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:09:37,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 23:09:37,876 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:09:37,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:37,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1911936896, now seen corresponding path program 1 times [2021-12-06 23:09:37,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:37,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792992721] [2021-12-06 23:09:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:37,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:09:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:09:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:09:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:09:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:09:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:09:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 23:09:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 23:09:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:09:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:09:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 23:09:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:09:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 23:09:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 23:09:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:09:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 23:09:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 23:09:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 23:09:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 23:09:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 23:09:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 23:09:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 23:09:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-12-06 23:09:38,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:38,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792992721] [2021-12-06 23:09:38,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792992721] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:09:38,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323240565] [2021-12-06 23:09:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:38,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:38,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:38,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:38,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:09:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:39,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 23:09:39,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:39,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:09:39,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:09:39,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 55 [2021-12-06 23:09:39,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:09:39,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:09:39,853 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:09:39,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 48 [2021-12-06 23:09:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:09:39,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:09:39,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323240565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:09:39,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:09:39,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [18] total 19 [2021-12-06 23:09:39,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895219922] [2021-12-06 23:09:39,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:09:39,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 23:09:39,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:39,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 23:09:39,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-12-06 23:09:39,979 INFO L87 Difference]: Start difference. First operand 11046 states and 16353 transitions. Second operand has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 13 states have internal predecessors, (130), 5 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 23:09:48,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:10:01,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:10:01,914 INFO L93 Difference]: Finished difference Result 47652 states and 75062 transitions. [2021-12-06 23:10:01,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-06 23:10:01,914 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 13 states have internal predecessors, (130), 5 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) Word has length 198 [2021-12-06 23:10:01,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:10:02,031 INFO L225 Difference]: With dead ends: 47652 [2021-12-06 23:10:02,031 INFO L226 Difference]: Without dead ends: 37180 [2021-12-06 23:10:02,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 247 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=428, Invalid=3112, Unknown=0, NotChecked=0, Total=3540 [2021-12-06 23:10:02,063 INFO L933 BasicCegarLoop]: 3041 mSDtfsCounter, 6596 mSDsluCounter, 30221 mSDsCounter, 0 mSdLazyCounter, 11009 mSolverCounterSat, 2077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6608 SdHoareTripleChecker+Valid, 33262 SdHoareTripleChecker+Invalid, 13086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2077 IncrementalHoareTripleChecker+Valid, 11009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:10:02,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6608 Valid, 33262 Invalid, 13086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2077 Valid, 11009 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2021-12-06 23:10:02,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37180 states. [2021-12-06 23:10:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37180 to 17587. [2021-12-06 23:10:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17587 states, 13052 states have (on average 1.4192460925528654) internal successors, (18524), 13536 states have internal predecessors, (18524), 3487 states have call successors, (3487), 992 states have call predecessors, (3487), 1047 states have return successors, (4052), 3281 states have call predecessors, (4052), 3486 states have call successors, (4052) [2021-12-06 23:10:04,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17587 states to 17587 states and 26063 transitions. [2021-12-06 23:10:04,008 INFO L78 Accepts]: Start accepts. Automaton has 17587 states and 26063 transitions. Word has length 198 [2021-12-06 23:10:04,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:10:04,008 INFO L470 AbstractCegarLoop]: Abstraction has 17587 states and 26063 transitions. [2021-12-06 23:10:04,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 13 states have internal predecessors, (130), 5 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (22), 7 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 23:10:04,008 INFO L276 IsEmpty]: Start isEmpty. Operand 17587 states and 26063 transitions. [2021-12-06 23:10:04,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-06 23:10:04,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:10:04,034 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:10:04,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-06 23:10:04,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 23:10:04,235 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:10:04,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:10:04,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1643471529, now seen corresponding path program 1 times [2021-12-06 23:10:04,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:10:04,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252802726] [2021-12-06 23:10:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:10:04,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:10:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:10:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:10:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:10:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:10:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:10:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:10:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 23:10:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 23:10:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:10:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:10:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:10:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 23:10:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 23:10:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 23:10:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 23:10:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:10:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 23:10:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 23:10:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 23:10:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 23:10:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 23:10:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 23:10:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-06 23:10:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 23:10:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-12-06 23:10:04,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:10:04,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252802726] [2021-12-06 23:10:04,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252802726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:10:04,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:10:04,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:10:04,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574858579] [2021-12-06 23:10:04,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:10:04,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:10:04,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:10:04,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:10:04,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:10:04,456 INFO L87 Difference]: Start difference. First operand 17587 states and 26063 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-06 23:10:08,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:10:10,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:10:12,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:10:15,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:10:21,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:10:21,638 INFO L93 Difference]: Finished difference Result 56240 states and 84595 transitions. [2021-12-06 23:10:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 23:10:21,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 203 [2021-12-06 23:10:21,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:10:21,748 INFO L225 Difference]: With dead ends: 56240 [2021-12-06 23:10:21,748 INFO L226 Difference]: Without dead ends: 39199 [2021-12-06 23:10:21,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-12-06 23:10:21,783 INFO L933 BasicCegarLoop]: 2920 mSDtfsCounter, 2488 mSDsluCounter, 7147 mSDsCounter, 0 mSdLazyCounter, 6373 mSolverCounterSat, 1386 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2665 SdHoareTripleChecker+Valid, 10067 SdHoareTripleChecker+Invalid, 7761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1386 IncrementalHoareTripleChecker+Valid, 6373 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:10:21,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2665 Valid, 10067 Invalid, 7761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1386 Valid, 6373 Invalid, 2 Unknown, 0 Unchecked, 13.6s Time] [2021-12-06 23:10:21,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39199 states. [2021-12-06 23:10:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39199 to 29298. [2021-12-06 23:10:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29298 states, 21815 states have (on average 1.425166170066468) internal successors, (31090), 22697 states have internal predecessors, (31090), 5715 states have call successors, (5715), 1536 states have call predecessors, (5715), 1767 states have return successors, (7106), 5437 states have call predecessors, (7106), 5714 states have call successors, (7106) [2021-12-06 23:10:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29298 states to 29298 states and 43911 transitions. [2021-12-06 23:10:24,844 INFO L78 Accepts]: Start accepts. Automaton has 29298 states and 43911 transitions. Word has length 203 [2021-12-06 23:10:24,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:10:24,844 INFO L470 AbstractCegarLoop]: Abstraction has 29298 states and 43911 transitions. [2021-12-06 23:10:24,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-06 23:10:24,845 INFO L276 IsEmpty]: Start isEmpty. Operand 29298 states and 43911 transitions. [2021-12-06 23:10:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-06 23:10:24,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:10:24,882 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:10:24,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 23:10:24,882 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:10:24,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:10:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2103589417, now seen corresponding path program 1 times [2021-12-06 23:10:24,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:10:24,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377167392] [2021-12-06 23:10:24,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:10:24,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:10:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:10:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:10:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 23:10:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:10:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:10:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:10:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 23:10:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 23:10:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 23:10:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:10:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 23:10:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 23:10:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 23:10:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 23:10:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:10:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 23:10:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 23:10:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 23:10:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 23:10:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 23:10:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-06 23:10:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 23:10:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-06 23:10:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 23:10:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-12-06 23:10:26,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:10:26,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377167392] [2021-12-06 23:10:26,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377167392] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:10:26,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662535694] [2021-12-06 23:10:26,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:10:26,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:26,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:10:26,690 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:10:26,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97882804-26c6-489e-a68f-d952a4975f46/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:10:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:27,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 180 conjunts are in the unsatisfiable core [2021-12-06 23:10:27,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:10:27,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:10:27,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 23:10:27,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 23:10:27,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:27,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:27,899 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:10:27,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2021-12-06 23:10:27,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 23:10:28,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 23:10:28,136 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:10:28,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 23:10:28,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:10:28,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:10:28,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:28,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:28,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:28,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-12-06 23:10:28,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:10:28,726 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-06 23:10:28,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 23:10:28,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:28,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 33 [2021-12-06 23:10:28,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:28,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-06 23:10:28,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:28,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:28,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:28,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 42 [2021-12-06 23:10:28,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:28,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:28,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:28,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2021-12-06 23:10:29,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-12-06 23:10:29,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2021-12-06 23:10:29,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2021-12-06 23:10:29,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 48 [2021-12-06 23:10:29,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 23:10:29,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-12-06 23:10:29,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:10:29,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-06 23:10:29,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-06 23:10:29,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-12-06 23:10:29,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 23:10:29,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-12-06 23:10:29,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:10:29,744 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-06 23:10:29,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 23:10:29,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-06 23:10:29,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:29,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 33 [2021-12-06 23:10:30,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:30,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 33 [2021-12-06 23:10:30,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:30,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-06 23:10:30,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:30,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 23:10:30,374 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-06 23:10:30,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 23:10:30,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:30,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 33 [2021-12-06 23:10:30,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:30,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-06 23:10:30,648 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-06 23:10:30,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 23:10:30,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:30,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 33 [2021-12-06 23:10:30,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:30,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-06 23:10:31,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:31,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 101 [2021-12-06 23:10:31,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:31,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 76 [2021-12-06 23:10:31,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:31,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 29 [2021-12-06 23:10:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 64 proven. 13 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-06 23:10:31,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:10:31,245 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1672 (Array Int Int)) (v_ArrVal_1671 (Array Int Int)) (v_ArrVal_1670 (Array Int Int))) (let ((.cse0 (mod (let ((.cse1 (+ |c_ULTIMATE.start_slip_open_~sl~12#1.offset| 12))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1671) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1670) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1)) (+ 112 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1672) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse1)))) 4294967296))) (or (< 2147483647 .cse0) (<= .cse0 0)))) is different from false [2021-12-06 23:10:31,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662535694] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:10:31,254 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:10:31,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 69 [2021-12-06 23:10:31,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198161876] [2021-12-06 23:10:31,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:10:31,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-12-06 23:10:31,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:10:31,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-12-06 23:10:31,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=4610, Unknown=1, NotChecked=136, Total=4970 [2021-12-06 23:10:31,256 INFO L87 Difference]: Start difference. First operand 29298 states and 43911 transitions. Second operand has 69 states, 67 states have (on average 3.462686567164179) internal successors, (232), 55 states have internal predecessors, (232), 24 states have call successors, (49), 13 states have call predecessors, (49), 17 states have return successors, (41), 27 states have call predecessors, (41), 23 states have call successors, (41) [2021-12-06 23:10:58,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:11:00,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:11:02,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:11:07,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:11:09,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []