./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y --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 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:30:59,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:30:59,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:30:59,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:30:59,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:30:59,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:30:59,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:30:59,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:30:59,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:30:59,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:30:59,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:30:59,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:30:59,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:30:59,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:30:59,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:30:59,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:30:59,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:30:59,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:30:59,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:30:59,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:30:59,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:30:59,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:30:59,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:30:59,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:30:59,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:30:59,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:30:59,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:30:59,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:30:59,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:30:59,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:30:59,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:30:59,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:30:59,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:30:59,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:30:59,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:30:59,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:30:59,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:30:59,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:30:59,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:30:59,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:30:59,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:30:59,368 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:30:59,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:30:59,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:30:59,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:30:59,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:30:59,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:30:59,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:30:59,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:30:59,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:30:59,408 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:30:59,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:30:59,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:30:59,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:30:59,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:30:59,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:30:59,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:30:59,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:30:59,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:30:59,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:30:59,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:30:59,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:30:59,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:30:59,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:30:59,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:30:59,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:30:59,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:30:59,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:30:59,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:30:59,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:30:59,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:30:59,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:30:59,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:30:59,413 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_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e [2021-11-13 17:30:59,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:30:59,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:30:59,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:30:59,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:30:59,685 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:30:59,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-13 17:30:59,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/data/244493055/db95b2a9a32c4728a4cacde7ddfc309b/FLAG15d5f9965 [2021-11-13 17:31:00,738 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:31:00,739 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-13 17:31:00,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/data/244493055/db95b2a9a32c4728a4cacde7ddfc309b/FLAG15d5f9965 [2021-11-13 17:31:01,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/data/244493055/db95b2a9a32c4728a4cacde7ddfc309b [2021-11-13 17:31:01,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:31:01,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:31:01,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:01,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:31:01,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:31:01,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f2bc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01, skipping insertion in model container [2021-11-13 17:31:01,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:31:01,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:02,249 WARN L228 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_4415898b-4aa3-42ca-92af-fcda553efe3f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-13 17:31:02,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:03,017 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:31:03,226 WARN L228 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_4415898b-4aa3-42ca-92af-fcda553efe3f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-13 17:31:03,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:03,492 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:31:03,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03 WrapperNode [2021-11-13 17:31:03,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:03,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:03,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:31:03,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:31:03,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:03,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:31:03,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:31:03,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:31:03,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:31:03,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:31:03,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:31:03,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:31:03,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:04,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:04,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:31:04,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:31:04,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:31:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure dlci_to_q922 [2021-11-13 17:31:04,077 INFO L138 BoogieDeclarations]: Found implementation of procedure dlci_to_q922 [2021-11-13 17:31:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 17:31:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:31:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:31:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:31:04,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:31:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure dev_queue_xmit [2021-11-13 17:31:04,078 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_queue_xmit [2021-11-13 17:31:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:31:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure state [2021-11-13 17:31:04,078 INFO L138 BoogieDeclarations]: Found implementation of procedure state [2021-11-13 17:31:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure fr_hard_header [2021-11-13 17:31:04,079 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_hard_header [2021-11-13 17:31:04,079 INFO L130 BoogieDeclarations]: Found specification of procedure find_pvc [2021-11-13 17:31:04,079 INFO L138 BoogieDeclarations]: Found implementation of procedure find_pvc [2021-11-13 17:31:04,079 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-11-13 17:31:04,079 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-11-13 17:31:04,079 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-13 17:31:04,080 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-13 17:31:04,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 17:31:04,080 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 17:31:04,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-13 17:31:04,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-13 17:31:04,080 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-13 17:31:04,081 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-13 17:31:04,081 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_carrier [2021-11-13 17:31:04,081 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_carrier [2021-11-13 17:31:04,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:31:04,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:31:04,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_2 [2021-11-13 17:31:04,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_2 [2021-11-13 17:31:04,082 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-13 17:31:04,082 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-13 17:31:04,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 17:31:04,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 17:31:04,082 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 17:31:04,082 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 17:31:04,083 INFO L130 BoogieDeclarations]: Found specification of procedure fr_rx [2021-11-13 17:31:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_rx [2021-11-13 17:31:04,083 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_ioctl [2021-11-13 17:31:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_ioctl [2021-11-13 17:31:04,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:31:04,083 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-13 17:31:04,084 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-13 17:31:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:31:04,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:31:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure fr_ioctl [2021-11-13 17:31:04,084 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_ioctl [2021-11-13 17:31:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-13 17:31:04,085 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-13 17:31:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-13 17:31:04,085 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-13 17:31:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-13 17:31:04,085 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-13 17:31:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:31:04,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:31:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2021-11-13 17:31:04,086 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2021-11-13 17:31:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:31:04,086 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:31:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:31:04,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:31:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:31:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2021-11-13 17:31:04,087 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2021-11-13 17:31:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 17:31:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 17:31:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-13 17:31:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-13 17:31:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure fr_log_dlci_active [2021-11-13 17:31:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_log_dlci_active [2021-11-13 17:31:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:31:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:31:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure delete_unused_pvcs [2021-11-13 17:31:04,089 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_unused_pvcs [2021-11-13 17:31:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-11-13 17:31:04,089 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-11-13 17:31:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-13 17:31:04,089 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-13 17:31:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_is_used [2021-11-13 17:31:04,090 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_is_used [2021-11-13 17:31:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:31:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-13 17:31:04,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-13 17:31:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-13 17:31:04,091 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-13 17:31:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure fr_set_link_state [2021-11-13 17:31:04,091 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_set_link_state [2021-11-13 17:31:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure fr_lmi_send [2021-11-13 17:31:04,091 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_lmi_send [2021-11-13 17:31:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:31:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:31:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-13 17:31:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-13 17:31:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-13 17:31:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-13 17:31:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 17:31:04,092 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 17:31:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-13 17:31:04,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-13 17:31:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure get_dev_p [2021-11-13 17:31:04,093 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dev_p [2021-11-13 17:31:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:31:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2021-11-13 17:31:04,094 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2021-11-13 17:31:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure add_pvc [2021-11-13 17:31:04,094 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pvc [2021-11-13 17:31:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice [2021-11-13 17:31:04,094 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice [2021-11-13 17:31:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 17:31:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 17:31:04,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 17:31:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-13 17:31:04,095 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-13 17:31:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:31:04,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:31:04,978 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:31:08,094 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:31:08,095 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-13 17:31:08,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:08 BoogieIcfgContainer [2021-11-13 17:31:08,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:31:08,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:31:08,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:31:08,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:31:08,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:31:01" (1/3) ... [2021-11-13 17:31:08,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267114d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:08, skipping insertion in model container [2021-11-13 17:31:08,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (2/3) ... [2021-11-13 17:31:08,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267114d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:08, skipping insertion in model container [2021-11-13 17:31:08,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:08" (3/3) ... [2021-11-13 17:31:08,117 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-13 17:31:08,127 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:31:08,128 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:31:08,200 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:31:08,206 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 [2021-11-13 17:31:08,206 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:31:08,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 1162 states, 845 states have (on average 1.3775147928994083) internal successors, (1164), 861 states have internal predecessors, (1164), 265 states have call successors, (265), 51 states have call predecessors, (265), 50 states have return successors, (261), 260 states have call predecessors, (261), 261 states have call successors, (261) [2021-11-13 17:31:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-13 17:31:08,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:08,267 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:08,267 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:08,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash 16503480, now seen corresponding path program 1 times [2021-11-13 17:31:08,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:08,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588117155] [2021-11-13 17:31:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:08,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:31:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:31:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:31:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 17:31:08,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:08,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588117155] [2021-11-13 17:31:08,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588117155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:08,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:08,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:31:08,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774769327] [2021-11-13 17:31:08,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:08,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:31:08,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:08,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:31:08,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:08,934 INFO L87 Difference]: Start difference. First operand has 1162 states, 845 states have (on average 1.3775147928994083) internal successors, (1164), 861 states have internal predecessors, (1164), 265 states have call successors, (265), 51 states have call predecessors, (265), 50 states have return successors, (261), 260 states have call predecessors, (261), 261 states have call successors, (261) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:31:14,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:14,366 INFO L93 Difference]: Finished difference Result 3724 states and 5603 transitions. [2021-11-13 17:31:14,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:31:14,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2021-11-13 17:31:14,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:14,413 INFO L225 Difference]: With dead ends: 3724 [2021-11-13 17:31:14,413 INFO L226 Difference]: Without dead ends: 2551 [2021-11-13 17:31:14,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:14,434 INFO L933 BasicCegarLoop]: 1890 mSDtfsCounter, 2215 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4196.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2435 SdHoareTripleChecker+Valid, 4004 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.07ms SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4925.51ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:14,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2435 Valid, 4004 Invalid, 2031 Unknown, 0 Unchecked, 69.07ms Time], IncrementalHoareTripleChecker [754 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 4925.51ms Time] [2021-11-13 17:31:14,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2021-11-13 17:31:14,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 2273. [2021-11-13 17:31:14,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 1659 states have (on average 1.3664858348402653) internal successors, (2267), 1679 states have internal predecessors, (2267), 515 states have call successors, (515), 99 states have call predecessors, (515), 98 states have return successors, (514), 512 states have call predecessors, (514), 514 states have call successors, (514) [2021-11-13 17:31:14,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 3296 transitions. [2021-11-13 17:31:14,837 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 3296 transitions. Word has length 41 [2021-11-13 17:31:14,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:14,840 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 3296 transitions. [2021-11-13 17:31:14,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:31:14,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 3296 transitions. [2021-11-13 17:31:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-13 17:31:14,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:14,852 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:14,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:31:14,854 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:14,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:14,868 INFO L85 PathProgramCache]: Analyzing trace with hash 202884705, now seen corresponding path program 1 times [2021-11-13 17:31:14,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:14,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801232056] [2021-11-13 17:31:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:14,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:15,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:15,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:31:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:15,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:31:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:15,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:31:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 17:31:15,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:15,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801232056] [2021-11-13 17:31:15,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801232056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:15,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:15,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:31:15,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676174111] [2021-11-13 17:31:15,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:15,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:31:15,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:15,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:31:15,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:15,164 INFO L87 Difference]: Start difference. First operand 2273 states and 3296 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:31:19,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:19,682 INFO L93 Difference]: Finished difference Result 4811 states and 7034 transitions. [2021-11-13 17:31:19,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:31:19,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2021-11-13 17:31:19,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:19,707 INFO L225 Difference]: With dead ends: 4811 [2021-11-13 17:31:19,708 INFO L226 Difference]: Without dead ends: 2550 [2021-11-13 17:31:19,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:31:19,723 INFO L933 BasicCegarLoop]: 2043 mSDtfsCounter, 2219 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3679.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2398 SdHoareTripleChecker+Valid, 4432 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.56ms SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4158.09ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:19,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2398 Valid, 4432 Invalid, 1925 Unknown, 0 Unchecked, 45.56ms Time], IncrementalHoareTripleChecker [662 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 4158.09ms Time] [2021-11-13 17:31:19,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-11-13 17:31:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2272. [2021-11-13 17:31:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2272 states, 1658 states have (on average 1.3648974668275031) internal successors, (2263), 1678 states have internal predecessors, (2263), 515 states have call successors, (515), 99 states have call predecessors, (515), 98 states have return successors, (514), 512 states have call predecessors, (514), 514 states have call successors, (514) [2021-11-13 17:31:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 3292 transitions. [2021-11-13 17:31:19,888 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 3292 transitions. Word has length 44 [2021-11-13 17:31:19,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:19,889 INFO L470 AbstractCegarLoop]: Abstraction has 2272 states and 3292 transitions. [2021-11-13 17:31:19,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:31:19,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 3292 transitions. [2021-11-13 17:31:19,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 17:31:19,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:19,898 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-11-13 17:31:19,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:31:19,899 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:19,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:19,901 INFO L85 PathProgramCache]: Analyzing trace with hash -94841370, now seen corresponding path program 1 times [2021-11-13 17:31:19,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:19,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220081405] [2021-11-13 17:31:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:19,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:20,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:31:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:20,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:31:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:20,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:31:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:31:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:20,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:31:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:20,216 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 17:31:20,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:20,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220081405] [2021-11-13 17:31:20,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220081405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:20,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:20,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:31:20,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881290933] [2021-11-13 17:31:20,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:20,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:31:20,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:20,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:31:20,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:31:20,220 INFO L87 Difference]: Start difference. First operand 2272 states and 3292 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 17:31:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:27,031 INFO L93 Difference]: Finished difference Result 7337 states and 10822 transitions. [2021-11-13 17:31:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:31:27,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2021-11-13 17:31:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:27,075 INFO L225 Difference]: With dead ends: 7337 [2021-11-13 17:31:27,075 INFO L226 Difference]: Without dead ends: 5072 [2021-11-13 17:31:27,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:31:27,098 INFO L933 BasicCegarLoop]: 1899 mSDtfsCounter, 2199 mSDsluCounter, 5549 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5558.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2419 SdHoareTripleChecker+Valid, 7448 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.08ms SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6288.77ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:27,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2419 Valid, 7448 Invalid, 2847 Unknown, 0 Unchecked, 70.08ms Time], IncrementalHoareTripleChecker [747 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 6288.77ms Time] [2021-11-13 17:31:27,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-11-13 17:31:27,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 4554. [2021-11-13 17:31:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4554 states, 3324 states have (on average 1.3655234657039712) internal successors, (4539), 3368 states have internal predecessors, (4539), 1025 states have call successors, (1025), 197 states have call predecessors, (1025), 204 states have return successors, (1084), 1024 states have call predecessors, (1084), 1024 states have call successors, (1084) [2021-11-13 17:31:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 6648 transitions. [2021-11-13 17:31:27,429 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 6648 transitions. Word has length 66 [2021-11-13 17:31:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:27,432 INFO L470 AbstractCegarLoop]: Abstraction has 4554 states and 6648 transitions. [2021-11-13 17:31:27,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 17:31:27,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 6648 transitions. [2021-11-13 17:31:27,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 17:31:27,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:27,450 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2021-11-13 17:31:27,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:31:27,451 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:27,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash -248182647, now seen corresponding path program 1 times [2021-11-13 17:31:27,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:27,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420950639] [2021-11-13 17:31:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:27,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:27,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:31:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:31:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:27,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:31:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:27,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:31:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:31:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:31:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:27,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-13 17:31:27,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:27,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420950639] [2021-11-13 17:31:27,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420950639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:27,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:27,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:31:27,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310726943] [2021-11-13 17:31:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:27,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:31:27,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:27,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:31:27,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:27,741 INFO L87 Difference]: Start difference. First operand 4554 states and 6648 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 17:31:36,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:36,638 INFO L93 Difference]: Finished difference Result 15534 states and 23138 transitions. [2021-11-13 17:31:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:31:36,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 103 [2021-11-13 17:31:36,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:36,740 INFO L225 Difference]: With dead ends: 15534 [2021-11-13 17:31:36,741 INFO L226 Difference]: Without dead ends: 10992 [2021-11-13 17:31:36,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:31:36,777 INFO L933 BasicCegarLoop]: 2712 mSDtfsCounter, 2575 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 3495 mSolverCounterSat, 1255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7213.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2782 SdHoareTripleChecker+Valid, 5623 SdHoareTripleChecker+Invalid, 4750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.02ms SdHoareTripleChecker+Time, 1255 IncrementalHoareTripleChecker+Valid, 3495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8313.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:36,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2782 Valid, 5623 Invalid, 4750 Unknown, 0 Unchecked, 50.02ms Time], IncrementalHoareTripleChecker [1255 Valid, 3495 Invalid, 0 Unknown, 0 Unchecked, 8313.80ms Time] [2021-11-13 17:31:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10992 states. [2021-11-13 17:31:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10992 to 9020. [2021-11-13 17:31:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9020 states, 6596 states have (on average 1.3635536688902365) internal successors, (8994), 6698 states have internal predecessors, (8994), 2007 states have call successors, (2007), 389 states have call predecessors, (2007), 416 states have return successors, (2153), 2004 states have call predecessors, (2153), 2006 states have call successors, (2153) [2021-11-13 17:31:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9020 states to 9020 states and 13154 transitions. [2021-11-13 17:31:37,531 INFO L78 Accepts]: Start accepts. Automaton has 9020 states and 13154 transitions. Word has length 103 [2021-11-13 17:31:37,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:37,532 INFO L470 AbstractCegarLoop]: Abstraction has 9020 states and 13154 transitions. [2021-11-13 17:31:37,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 17:31:37,534 INFO L276 IsEmpty]: Start isEmpty. Operand 9020 states and 13154 transitions. [2021-11-13 17:31:37,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 17:31:37,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:37,552 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2021-11-13 17:31:37,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:31:37,553 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:37,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:37,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1651725426, now seen corresponding path program 1 times [2021-11-13 17:31:37,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:37,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550519654] [2021-11-13 17:31:37,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:37,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:37,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:31:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:31:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:37,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:31:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:37,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:31:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:37,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:31:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:37,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:31:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 17:31:37,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:37,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550519654] [2021-11-13 17:31:37,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550519654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:37,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:37,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:31:37,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445499130] [2021-11-13 17:31:37,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:37,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:31:37,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:37,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:31:37,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:37,873 INFO L87 Difference]: Start difference. First operand 9020 states and 13154 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:31:46,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:46,086 INFO L93 Difference]: Finished difference Result 19708 states and 29148 transitions. [2021-11-13 17:31:46,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:31:46,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 95 [2021-11-13 17:31:46,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:46,242 INFO L225 Difference]: With dead ends: 19708 [2021-11-13 17:31:46,242 INFO L226 Difference]: Without dead ends: 10700 [2021-11-13 17:31:46,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:31:46,290 INFO L933 BasicCegarLoop]: 1854 mSDtfsCounter, 3137 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 2820 mSolverCounterSat, 1632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6811.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3344 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 4452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.62ms SdHoareTripleChecker+Time, 1632 IncrementalHoareTripleChecker+Valid, 2820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7738.36ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:46,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3344 Valid, 4101 Invalid, 4452 Unknown, 0 Unchecked, 36.62ms Time], IncrementalHoareTripleChecker [1632 Valid, 2820 Invalid, 0 Unknown, 0 Unchecked, 7738.36ms Time] [2021-11-13 17:31:46,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10700 states. [2021-11-13 17:31:46,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10700 to 8736. [2021-11-13 17:31:46,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8736 states, 6368 states have (on average 1.3613379396984924) internal successors, (8669), 6472 states have internal predecessors, (8669), 1957 states have call successors, (1957), 383 states have call predecessors, (1957), 410 states have return successors, (2098), 1952 states have call predecessors, (2098), 1956 states have call successors, (2098) [2021-11-13 17:31:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8736 states to 8736 states and 12724 transitions. [2021-11-13 17:31:47,010 INFO L78 Accepts]: Start accepts. Automaton has 8736 states and 12724 transitions. Word has length 95 [2021-11-13 17:31:47,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:47,011 INFO L470 AbstractCegarLoop]: Abstraction has 8736 states and 12724 transitions. [2021-11-13 17:31:47,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:31:47,015 INFO L276 IsEmpty]: Start isEmpty. Operand 8736 states and 12724 transitions. [2021-11-13 17:31:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-13 17:31:47,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:47,040 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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] [2021-11-13 17:31:47,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:31:47,041 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:47,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1725212051, now seen corresponding path program 1 times [2021-11-13 17:31:47,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:47,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628344740] [2021-11-13 17:31:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:47,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:47,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:47,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:31:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:47,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:31:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:47,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:31:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:47,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:31:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:31:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:47,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 17:31:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:47,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-13 17:31:47,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:47,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628344740] [2021-11-13 17:31:47,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628344740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:47,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:47,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:31:47,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947994623] [2021-11-13 17:31:47,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:47,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:31:47,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:47,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:31:47,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:47,399 INFO L87 Difference]: Start difference. First operand 8736 states and 12724 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:31:56,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:56,911 INFO L93 Difference]: Finished difference Result 19998 states and 29670 transitions. [2021-11-13 17:31:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:31:56,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 117 [2021-11-13 17:31:56,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:56,985 INFO L225 Difference]: With dead ends: 19998 [2021-11-13 17:31:56,985 INFO L226 Difference]: Without dead ends: 13371 [2021-11-13 17:31:57,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:31:57,021 INFO L933 BasicCegarLoop]: 2873 mSDtfsCounter, 2477 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 3626 mSolverCounterSat, 1206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7862.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2689 SdHoareTripleChecker+Valid, 5953 SdHoareTripleChecker+Invalid, 4832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.23ms SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 3626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8903.06ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:57,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2689 Valid, 5953 Invalid, 4832 Unknown, 0 Unchecked, 40.23ms Time], IncrementalHoareTripleChecker [1206 Valid, 3626 Invalid, 0 Unknown, 0 Unchecked, 8903.06ms Time] [2021-11-13 17:31:57,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13371 states. [2021-11-13 17:31:57,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13371 to 10917. [2021-11-13 17:31:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10917 states, 7963 states have (on average 1.361170413160869) internal successors, (10839), 8094 states have internal predecessors, (10839), 2438 states have call successors, (2438), 481 states have call predecessors, (2438), 515 states have return successors, (2613), 2431 states have call predecessors, (2613), 2437 states have call successors, (2613) [2021-11-13 17:31:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10917 states to 10917 states and 15890 transitions. [2021-11-13 17:31:57,826 INFO L78 Accepts]: Start accepts. Automaton has 10917 states and 15890 transitions. Word has length 117 [2021-11-13 17:31:57,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:57,827 INFO L470 AbstractCegarLoop]: Abstraction has 10917 states and 15890 transitions. [2021-11-13 17:31:57,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:31:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 10917 states and 15890 transitions. [2021-11-13 17:31:57,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 17:31:57,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:57,862 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:31:57,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:31:57,863 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:57,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:57,864 INFO L85 PathProgramCache]: Analyzing trace with hash -159171181, now seen corresponding path program 1 times [2021-11-13 17:31:57,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:57,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682257203] [2021-11-13 17:31:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:57,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:31:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:31:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:31:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:31:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:58,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:31:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:58,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 17:31:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-13 17:31:58,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:58,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682257203] [2021-11-13 17:31:58,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682257203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:58,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:58,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:31:58,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88911190] [2021-11-13 17:31:58,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:58,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:31:58,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:58,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:31:58,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:31:58,092 INFO L87 Difference]: Start difference. First operand 10917 states and 15890 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:32:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:09,962 INFO L93 Difference]: Finished difference Result 27579 states and 40872 transitions. [2021-11-13 17:32:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:32:09,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 122 [2021-11-13 17:32:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:10,064 INFO L225 Difference]: With dead ends: 27579 [2021-11-13 17:32:10,064 INFO L226 Difference]: Without dead ends: 18771 [2021-11-13 17:32:10,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:32:10,170 INFO L933 BasicCegarLoop]: 2912 mSDtfsCounter, 2587 mSDsluCounter, 5298 mSDsCounter, 0 mSdLazyCounter, 4885 mSolverCounterSat, 1417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9722.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 8210 SdHoareTripleChecker+Invalid, 6302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.00ms SdHoareTripleChecker+Time, 1417 IncrementalHoareTripleChecker+Valid, 4885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11064.32ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:10,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2729 Valid, 8210 Invalid, 6302 Unknown, 0 Unchecked, 58.00ms Time], IncrementalHoareTripleChecker [1417 Valid, 4885 Invalid, 0 Unknown, 0 Unchecked, 11064.32ms Time] [2021-11-13 17:32:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18771 states. [2021-11-13 17:32:11,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18771 to 10921. [2021-11-13 17:32:11,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10921 states, 7967 states have (on average 1.3609890799548137) internal successors, (10843), 8098 states have internal predecessors, (10843), 2438 states have call successors, (2438), 481 states have call predecessors, (2438), 515 states have return successors, (2613), 2431 states have call predecessors, (2613), 2437 states have call successors, (2613) [2021-11-13 17:32:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10921 states to 10921 states and 15894 transitions. [2021-11-13 17:32:11,159 INFO L78 Accepts]: Start accepts. Automaton has 10921 states and 15894 transitions. Word has length 122 [2021-11-13 17:32:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:11,161 INFO L470 AbstractCegarLoop]: Abstraction has 10921 states and 15894 transitions. [2021-11-13 17:32:11,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:32:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 10921 states and 15894 transitions. [2021-11-13 17:32:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-13 17:32:11,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:11,186 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:32:11,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:32:11,186 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:11,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:11,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1619034978, now seen corresponding path program 1 times [2021-11-13 17:32:11,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:11,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010722731] [2021-11-13 17:32:11,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:11,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:11,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:32:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:11,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:32:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:11,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:32:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:11,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:32:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:11,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:32:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:11,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:32:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:11,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 17:32:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:32:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-13 17:32:11,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:11,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010722731] [2021-11-13 17:32:11,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010722731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:11,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:11,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:32:11,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924902966] [2021-11-13 17:32:11,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:11,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:32:11,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:11,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:32:11,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:32:11,422 INFO L87 Difference]: Start difference. First operand 10921 states and 15894 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 17:32:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:17,687 INFO L93 Difference]: Finished difference Result 19044 states and 28439 transitions. [2021-11-13 17:32:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:32:17,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 132 [2021-11-13 17:32:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:17,762 INFO L225 Difference]: With dead ends: 19044 [2021-11-13 17:32:17,762 INFO L226 Difference]: Without dead ends: 13373 [2021-11-13 17:32:17,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:32:17,788 INFO L933 BasicCegarLoop]: 1542 mSDtfsCounter, 1010 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4952.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 3808 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.94ms SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5639.18ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:17,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 3808 Invalid, 2860 Unknown, 0 Unchecked, 25.94ms Time], IncrementalHoareTripleChecker [709 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 5639.18ms Time] [2021-11-13 17:32:17,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13373 states. [2021-11-13 17:32:18,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13373 to 10931. [2021-11-13 17:32:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10931 states, 7977 states have (on average 1.3605365425598597) internal successors, (10853), 8108 states have internal predecessors, (10853), 2438 states have call successors, (2438), 481 states have call predecessors, (2438), 515 states have return successors, (2613), 2431 states have call predecessors, (2613), 2437 states have call successors, (2613) [2021-11-13 17:32:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10931 states to 10931 states and 15904 transitions. [2021-11-13 17:32:18,674 INFO L78 Accepts]: Start accepts. Automaton has 10931 states and 15904 transitions. Word has length 132 [2021-11-13 17:32:18,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:18,675 INFO L470 AbstractCegarLoop]: Abstraction has 10931 states and 15904 transitions. [2021-11-13 17:32:18,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 17:32:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 10931 states and 15904 transitions. [2021-11-13 17:32:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-13 17:32:18,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:18,703 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:32:18,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:32:18,704 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:18,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:18,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1510120385, now seen corresponding path program 1 times [2021-11-13 17:32:18,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:18,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600154827] [2021-11-13 17:32:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:18,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:32:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:32:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:32:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:32:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:32:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:32:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 17:32:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:19,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:32:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-13 17:32:19,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:19,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600154827] [2021-11-13 17:32:19,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600154827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:19,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:19,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:32:19,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156808384] [2021-11-13 17:32:19,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:19,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:32:19,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:19,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:32:19,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:32:19,072 INFO L87 Difference]: Start difference. First operand 10931 states and 15904 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 17:32:34,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:37,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:37,754 INFO L93 Difference]: Finished difference Result 27272 states and 40484 transitions. [2021-11-13 17:32:37,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 17:32:37,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 134 [2021-11-13 17:32:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:37,840 INFO L225 Difference]: With dead ends: 27272 [2021-11-13 17:32:37,840 INFO L226 Difference]: Without dead ends: 16353 [2021-11-13 17:32:37,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-11-13 17:32:37,890 INFO L933 BasicCegarLoop]: 1808 mSDtfsCounter, 5443 mSDsluCounter, 5217 mSDsCounter, 0 mSdLazyCounter, 9067 mSolverCounterSat, 3156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15310.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5738 SdHoareTripleChecker+Valid, 7025 SdHoareTripleChecker+Invalid, 12223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.07ms SdHoareTripleChecker+Time, 3156 IncrementalHoareTripleChecker+Valid, 9067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17534.29ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:37,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5738 Valid, 7025 Invalid, 12223 Unknown, 0 Unchecked, 75.07ms Time], IncrementalHoareTripleChecker [3156 Valid, 9067 Invalid, 0 Unknown, 0 Unchecked, 17534.29ms Time] [2021-11-13 17:32:37,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16353 states. [2021-11-13 17:32:38,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16353 to 12266. [2021-11-13 17:32:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12266 states, 8957 states have (on average 1.353466562465111) internal successors, (12123), 9118 states have internal predecessors, (12123), 2688 states have call successors, (2688), 576 states have call predecessors, (2688), 620 states have return successors, (2913), 2681 states have call predecessors, (2913), 2687 states have call successors, (2913) [2021-11-13 17:32:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12266 states to 12266 states and 17724 transitions. [2021-11-13 17:32:38,921 INFO L78 Accepts]: Start accepts. Automaton has 12266 states and 17724 transitions. Word has length 134 [2021-11-13 17:32:38,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:38,921 INFO L470 AbstractCegarLoop]: Abstraction has 12266 states and 17724 transitions. [2021-11-13 17:32:38,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 17:32:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 12266 states and 17724 transitions. [2021-11-13 17:32:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-13 17:32:38,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:38,968 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:38,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:32:38,969 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:38,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:38,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1419893241, now seen corresponding path program 1 times [2021-11-13 17:32:38,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:38,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932007284] [2021-11-13 17:32:38,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:38,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:32:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:32:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:32:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:32:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:32:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:32:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-13 17:32:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:32:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 17:32:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 17:32:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:32:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 17:32:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 17:32:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 17:32:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 17:32:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:32:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:32:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:32:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:32:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:32:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:32:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-13 17:32:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 17:32:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-13 17:32:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:32:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-13 17:32:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-13 17:32:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-11-13 17:32:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-13 17:32:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-11-13 17:32:39,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:39,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932007284] [2021-11-13 17:32:39,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932007284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:39,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:39,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:32:39,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948804681] [2021-11-13 17:32:39,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:39,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:32:39,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:39,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:32:39,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:32:39,356 INFO L87 Difference]: Start difference. First operand 12266 states and 17724 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-13 17:32:43,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:43,633 INFO L93 Difference]: Finished difference Result 27785 states and 40884 transitions. [2021-11-13 17:32:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:32:43,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 208 [2021-11-13 17:32:43,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:43,705 INFO L225 Difference]: With dead ends: 27785 [2021-11-13 17:32:43,705 INFO L226 Difference]: Without dead ends: 15531 [2021-11-13 17:32:43,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:32:43,746 INFO L933 BasicCegarLoop]: 1642 mSDtfsCounter, 885 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3078.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.49ms SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3588.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:43,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 3724 Invalid, 1789 Unknown, 0 Unchecked, 19.49ms Time], IncrementalHoareTripleChecker [640 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 3588.80ms Time] [2021-11-13 17:32:43,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15531 states. [2021-11-13 17:32:44,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15531 to 13416. [2021-11-13 17:32:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13416 states, 9907 states have (on average 1.3498536388412234) internal successors, (13373), 10098 states have internal predecessors, (13373), 2888 states have call successors, (2888), 576 states have call predecessors, (2888), 620 states have return successors, (3158), 2891 states have call predecessors, (3158), 2887 states have call successors, (3158) [2021-11-13 17:32:44,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13416 states to 13416 states and 19419 transitions. [2021-11-13 17:32:44,665 INFO L78 Accepts]: Start accepts. Automaton has 13416 states and 19419 transitions. Word has length 208 [2021-11-13 17:32:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:44,666 INFO L470 AbstractCegarLoop]: Abstraction has 13416 states and 19419 transitions. [2021-11-13 17:32:44,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-13 17:32:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 13416 states and 19419 transitions. [2021-11-13 17:32:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-13 17:32:44,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:44,695 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:44,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:32:44,695 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:44,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1308316105, now seen corresponding path program 1 times [2021-11-13 17:32:44,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:44,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632448031] [2021-11-13 17:32:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:44,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:32:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:32:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:32:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:32:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:32:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:32:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-13 17:32:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:32:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 17:32:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 17:32:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:32:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 17:32:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 17:32:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 17:32:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 17:32:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:32:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:32:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:32:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:32:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:32:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:45,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:32:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:45,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-13 17:32:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:45,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 17:32:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:45,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-13 17:32:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:45,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:32:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:45,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-13 17:32:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:45,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-13 17:32:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:45,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-11-13 17:32:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-13 17:32:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-13 17:32:45,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:45,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632448031] [2021-11-13 17:32:45,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632448031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:45,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:45,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:32:45,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202566005] [2021-11-13 17:32:45,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:45,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:32:45,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:45,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:32:45,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:32:45,183 INFO L87 Difference]: Start difference. First operand 13416 states and 19419 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-13 17:32:51,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:51,591 INFO L93 Difference]: Finished difference Result 28720 states and 42214 transitions. [2021-11-13 17:32:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:32:51,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 208 [2021-11-13 17:32:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:51,671 INFO L225 Difference]: With dead ends: 28720 [2021-11-13 17:32:51,671 INFO L226 Difference]: Without dead ends: 15316 [2021-11-13 17:32:51,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:32:51,715 INFO L933 BasicCegarLoop]: 1610 mSDtfsCounter, 424 mSDsluCounter, 5417 mSDsCounter, 0 mSdLazyCounter, 2475 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4899.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 7027 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.73ms SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 2475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5642.47ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:51,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 7027 Invalid, 2771 Unknown, 0 Unchecked, 31.73ms Time], IncrementalHoareTripleChecker [296 Valid, 2475 Invalid, 0 Unknown, 0 Unchecked, 5642.47ms Time] [2021-11-13 17:32:51,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15316 states. [2021-11-13 17:32:52,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15316 to 13456. [2021-11-13 17:32:52,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13456 states, 9937 states have (on average 1.3487974237697493) internal successors, (13403), 10128 states have internal predecessors, (13403), 2888 states have call successors, (2888), 576 states have call predecessors, (2888), 630 states have return successors, (3182), 2901 states have call predecessors, (3182), 2887 states have call successors, (3182) [2021-11-13 17:32:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13456 states to 13456 states and 19473 transitions. [2021-11-13 17:32:52,639 INFO L78 Accepts]: Start accepts. Automaton has 13456 states and 19473 transitions. Word has length 208 [2021-11-13 17:32:52,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:52,640 INFO L470 AbstractCegarLoop]: Abstraction has 13456 states and 19473 transitions. [2021-11-13 17:32:52,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (30), 4 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-13 17:32:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 13456 states and 19473 transitions. [2021-11-13 17:32:52,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-13 17:32:52,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:52,668 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:52,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:32:52,669 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:52,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:52,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2081494971, now seen corresponding path program 1 times [2021-11-13 17:32:52,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:52,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39769473] [2021-11-13 17:32:52,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:52,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:32:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:32:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:32:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:32:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:32:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:32:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-13 17:32:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:32:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 17:32:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 17:32:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:32:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 17:32:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 17:32:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 17:32:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 17:32:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:32:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:32:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:32:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:32:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:32:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:32:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:32:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-13 17:32:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-13 17:32:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-13 17:32:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 17:32:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-13 17:32:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-13 17:32:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 17:32:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-13 17:32:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-13 17:32:53,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:53,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39769473] [2021-11-13 17:32:53,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39769473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:53,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:53,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-13 17:32:53,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687381813] [2021-11-13 17:32:53,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:53,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 17:32:53,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:53,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 17:32:53,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:32:53,914 INFO L87 Difference]: Start difference. First operand 13456 states and 19473 transitions. Second operand has 16 states, 15 states have (on average 6.8) internal successors, (102), 11 states have internal predecessors, (102), 3 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-13 17:33:04,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:04,493 INFO L93 Difference]: Finished difference Result 30395 states and 44714 transitions. [2021-11-13 17:33:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 17:33:04,493 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.8) internal successors, (102), 11 states have internal predecessors, (102), 3 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 215 [2021-11-13 17:33:04,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:04,549 INFO L225 Difference]: With dead ends: 30395 [2021-11-13 17:33:04,549 INFO L226 Difference]: Without dead ends: 16951 [2021-11-13 17:33:04,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2021-11-13 17:33:04,588 INFO L933 BasicCegarLoop]: 1710 mSDtfsCounter, 504 mSDsluCounter, 18013 mSDsCounter, 0 mSdLazyCounter, 5529 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8398.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 19723 SdHoareTripleChecker+Invalid, 5828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.82ms SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 5529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9697.96ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:04,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 19723 Invalid, 5828 Unknown, 0 Unchecked, 61.82ms Time], IncrementalHoareTripleChecker [299 Valid, 5529 Invalid, 0 Unknown, 0 Unchecked, 9697.96ms Time] [2021-11-13 17:33:04,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16951 states. [2021-11-13 17:33:05,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16951 to 13536. [2021-11-13 17:33:05,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 10007 states have (on average 1.3433596482462276) internal successors, (13443), 10188 states have internal predecessors, (13443), 2888 states have call successors, (2888), 576 states have call predecessors, (2888), 640 states have return successors, (3202), 2921 states have call predecessors, (3202), 2887 states have call successors, (3202) [2021-11-13 17:33:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 19533 transitions. [2021-11-13 17:33:05,626 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 19533 transitions. Word has length 215 [2021-11-13 17:33:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:05,626 INFO L470 AbstractCegarLoop]: Abstraction has 13536 states and 19533 transitions. [2021-11-13 17:33:05,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.8) internal successors, (102), 11 states have internal predecessors, (102), 3 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-13 17:33:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 19533 transitions. [2021-11-13 17:33:05,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-13 17:33:05,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:05,655 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 7, 6, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:05,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 17:33:05,656 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:33:05,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1853804592, now seen corresponding path program 1 times [2021-11-13 17:33:05,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:05,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403082823] [2021-11-13 17:33:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:05,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:33:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:33:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:33:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:33:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:33:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:33:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:33:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:33:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:33:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:33:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 17:33:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 17:33:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 17:33:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:33:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:33:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:33:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 17:33:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:33:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:33:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:33:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:33:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:33:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:33:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:33:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 17:33:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:33:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 17:33:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 17:33:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:33:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:33:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 17:33:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:33:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:06,162 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-11-13 17:33:06,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:06,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403082823] [2021-11-13 17:33:06,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403082823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:06,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:06,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:33:06,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433980819] [2021-11-13 17:33:06,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:06,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:33:06,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:06,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:33:06,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:33:06,165 INFO L87 Difference]: Start difference. First operand 13536 states and 19533 transitions. Second operand has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 4 states have internal predecessors, (187), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 17:33:18,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:18,727 INFO L93 Difference]: Finished difference Result 45858 states and 67578 transitions. [2021-11-13 17:33:18,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:33:18,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 4 states have internal predecessors, (187), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 309 [2021-11-13 17:33:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:18,841 INFO L225 Difference]: With dead ends: 45858 [2021-11-13 17:33:18,841 INFO L226 Difference]: Without dead ends: 32334 [2021-11-13 17:33:18,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:33:18,892 INFO L933 BasicCegarLoop]: 2245 mSDtfsCounter, 2275 mSDsluCounter, 5751 mSDsCounter, 0 mSdLazyCounter, 4611 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9472.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 7996 SdHoareTripleChecker+Invalid, 5530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.01ms SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 4611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10910.61ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:18,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2498 Valid, 7996 Invalid, 5530 Unknown, 0 Unchecked, 56.01ms Time], IncrementalHoareTripleChecker [919 Valid, 4611 Invalid, 0 Unknown, 0 Unchecked, 10910.61ms Time] [2021-11-13 17:33:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32334 states. [2021-11-13 17:33:20,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32334 to 25796. [2021-11-13 17:33:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25796 states, 19254 states have (on average 1.3418510439389217) internal successors, (25836), 19600 states have internal predecessors, (25836), 5291 states have call successors, (5291), 1121 states have call predecessors, (5291), 1250 states have return successors, (5856), 5374 states have call predecessors, (5856), 5290 states have call successors, (5856) [2021-11-13 17:33:20,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25796 states to 25796 states and 36983 transitions. [2021-11-13 17:33:20,268 INFO L78 Accepts]: Start accepts. Automaton has 25796 states and 36983 transitions. Word has length 309 [2021-11-13 17:33:20,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:20,269 INFO L470 AbstractCegarLoop]: Abstraction has 25796 states and 36983 transitions. [2021-11-13 17:33:20,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 4 states have internal predecessors, (187), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 17:33:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand 25796 states and 36983 transitions. [2021-11-13 17:33:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-13 17:33:20,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:20,312 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 7, 6, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:20,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 17:33:20,313 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:33:20,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:20,313 INFO L85 PathProgramCache]: Analyzing trace with hash 209812636, now seen corresponding path program 1 times [2021-11-13 17:33:20,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:20,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713454290] [2021-11-13 17:33:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:20,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:33:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:33:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:33:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:33:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:33:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:33:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:33:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:33:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:33:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:33:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 17:33:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 17:33:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 17:33:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:33:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:33:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:33:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 17:33:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:33:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:33:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:33:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:33:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:33:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:33:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:33:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 17:33:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:33:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 17:33:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 17:33:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:33:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:33:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 17:33:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:33:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-13 17:33:20,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:20,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713454290] [2021-11-13 17:33:20,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713454290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:20,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:20,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:33:20,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705776480] [2021-11-13 17:33:20,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:20,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:33:20,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:20,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:33:20,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:33:20,775 INFO L87 Difference]: Start difference. First operand 25796 states and 36983 transitions. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 17:33:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:29,428 INFO L93 Difference]: Finished difference Result 60524 states and 88845 transitions. [2021-11-13 17:33:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:33:29,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 309 [2021-11-13 17:33:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:29,593 INFO L225 Difference]: With dead ends: 60524 [2021-11-13 17:33:29,593 INFO L226 Difference]: Without dead ends: 34740 [2021-11-13 17:33:29,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:33:29,664 INFO L933 BasicCegarLoop]: 1633 mSDtfsCounter, 1198 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5939.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 4314 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.62ms SdHoareTripleChecker+Time, 724 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6789.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:29,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1309 Valid, 4314 Invalid, 2677 Unknown, 0 Unchecked, 28.62ms Time], IncrementalHoareTripleChecker [724 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 6789.80ms Time] [2021-11-13 17:33:29,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34740 states. [2021-11-13 17:33:31,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34740 to 26996. [2021-11-13 17:33:31,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26996 states, 20254 states have (on average 1.3526217043546953) internal successors, (27396), 20620 states have internal predecessors, (27396), 5491 states have call successors, (5491), 1121 states have call predecessors, (5491), 1250 states have return successors, (6056), 5574 states have call predecessors, (6056), 5490 states have call successors, (6056) [2021-11-13 17:33:31,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26996 states to 26996 states and 38943 transitions. [2021-11-13 17:33:31,222 INFO L78 Accepts]: Start accepts. Automaton has 26996 states and 38943 transitions. Word has length 309 [2021-11-13 17:33:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:31,223 INFO L470 AbstractCegarLoop]: Abstraction has 26996 states and 38943 transitions. [2021-11-13 17:33:31,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 17:33:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 26996 states and 38943 transitions. [2021-11-13 17:33:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-13 17:33:31,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:31,269 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 7, 6, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:31,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 17:33:31,269 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:33:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash -429672610, now seen corresponding path program 1 times [2021-11-13 17:33:31,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:31,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357861198] [2021-11-13 17:33:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:31,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:33:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:33:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:33:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:33:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:33:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:33:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:33:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:33:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:33:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:33:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 17:33:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 17:33:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 17:33:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:33:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:33:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:33:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 17:33:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:33:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:33:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:33:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:33:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:33:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:33:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:33:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 17:33:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:33:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 17:33:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 17:33:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:33:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:33:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 17:33:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:33:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-13 17:33:31,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:31,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357861198] [2021-11-13 17:33:31,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357861198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:31,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:31,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:33:31,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348928850] [2021-11-13 17:33:31,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:31,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:33:31,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:31,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:33:31,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:33:31,766 INFO L87 Difference]: Start difference. First operand 26996 states and 38943 transitions. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 17:33:41,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:41,665 INFO L93 Difference]: Finished difference Result 61744 states and 90795 transitions. [2021-11-13 17:33:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:33:41,667 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 309 [2021-11-13 17:33:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:41,824 INFO L225 Difference]: With dead ends: 61744 [2021-11-13 17:33:41,825 INFO L226 Difference]: Without dead ends: 34760 [2021-11-13 17:33:41,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:33:41,924 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 714 mSDsluCounter, 3069 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6963.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 4631 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.62ms SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7961.56ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:41,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 4631 Invalid, 2960 Unknown, 0 Unchecked, 27.62ms Time], IncrementalHoareTripleChecker [365 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 7961.56ms Time] [2021-11-13 17:33:41,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34760 states. [2021-11-13 17:33:43,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34760 to 27596. [2021-11-13 17:33:43,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27596 states, 20794 states have (on average 1.3588535154371453) internal successors, (28256), 21160 states have internal predecessors, (28256), 5551 states have call successors, (5551), 1121 states have call predecessors, (5551), 1250 states have return successors, (6116), 5634 states have call predecessors, (6116), 5550 states have call successors, (6116) [2021-11-13 17:33:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27596 states to 27596 states and 39923 transitions. [2021-11-13 17:33:43,597 INFO L78 Accepts]: Start accepts. Automaton has 27596 states and 39923 transitions. Word has length 309 [2021-11-13 17:33:43,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:43,598 INFO L470 AbstractCegarLoop]: Abstraction has 27596 states and 39923 transitions. [2021-11-13 17:33:43,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 17:33:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand 27596 states and 39923 transitions. [2021-11-13 17:33:43,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-13 17:33:43,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:43,647 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 7, 6, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:43,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 17:33:43,647 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:33:43,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:43,648 INFO L85 PathProgramCache]: Analyzing trace with hash -145687072, now seen corresponding path program 1 times [2021-11-13 17:33:43,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:43,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152996965] [2021-11-13 17:33:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:43,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:43,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:33:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:43,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:33:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:43,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:33:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:43,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:33:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:43,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:33:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:33:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:33:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:33:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:33:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:33:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 17:33:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 17:33:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 17:33:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:33:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:33:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:33:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 17:33:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:33:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:33:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:33:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:33:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:33:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:33:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:33:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 17:33:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:33:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 17:33:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 17:33:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:33:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:33:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 17:33:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:33:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-13 17:33:44,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:44,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152996965] [2021-11-13 17:33:44,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152996965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:44,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:44,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:33:44,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770368797] [2021-11-13 17:33:44,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:44,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:33:44,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:44,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:33:44,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:33:44,308 INFO L87 Difference]: Start difference. First operand 27596 states and 39923 transitions. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 17:33:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:51,972 INFO L93 Difference]: Finished difference Result 62004 states and 91175 transitions. [2021-11-13 17:33:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:33:51,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 309 [2021-11-13 17:33:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:52,099 INFO L225 Difference]: With dead ends: 62004 [2021-11-13 17:33:52,099 INFO L226 Difference]: Without dead ends: 34420 [2021-11-13 17:33:52,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:33:52,173 INFO L933 BasicCegarLoop]: 1585 mSDtfsCounter, 1093 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5084.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 4122 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.16ms SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5913.71ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:52,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 4122 Invalid, 2560 Unknown, 0 Unchecked, 22.16ms Time], IncrementalHoareTripleChecker [698 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 5913.71ms Time] [2021-11-13 17:33:52,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34420 states. [2021-11-13 17:33:53,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34420 to 27596. [2021-11-13 17:33:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27596 states, 20794 states have (on average 1.3550062518034047) internal successors, (28176), 21160 states have internal predecessors, (28176), 5551 states have call successors, (5551), 1121 states have call predecessors, (5551), 1250 states have return successors, (6116), 5634 states have call predecessors, (6116), 5550 states have call successors, (6116) [2021-11-13 17:33:53,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27596 states to 27596 states and 39843 transitions. [2021-11-13 17:33:53,807 INFO L78 Accepts]: Start accepts. Automaton has 27596 states and 39843 transitions. Word has length 309 [2021-11-13 17:33:53,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:53,808 INFO L470 AbstractCegarLoop]: Abstraction has 27596 states and 39843 transitions. [2021-11-13 17:33:53,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (36), 5 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 17:33:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand 27596 states and 39843 transitions. [2021-11-13 17:33:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-13 17:33:53,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:53,845 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:53,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 17:33:53,845 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:33:53,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1138629090, now seen corresponding path program 1 times [2021-11-13 17:33:53,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:53,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709168099] [2021-11-13 17:33:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:53,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:33:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:33:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:33:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:33:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:33:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:33:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:33:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:33:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 17:33:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 17:33:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 17:33:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 17:33:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:33:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 17:33:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:33:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:33:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:33:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:33:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:33:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:33:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:33:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:33:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:33:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 17:33:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:33:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 17:33:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 17:33:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:33:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:33:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 17:33:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-11-13 17:33:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-11-13 17:33:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-11-13 17:33:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2021-11-13 17:33:54,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:54,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709168099] [2021-11-13 17:33:54,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709168099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:54,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:54,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:33:54,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474092294] [2021-11-13 17:33:54,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:54,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:33:54,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:54,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:33:54,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:33:54,382 INFO L87 Difference]: Start difference. First operand 27596 states and 39843 transitions. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 5 states have internal predecessors, (184), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-13 17:34:07,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:07,349 INFO L93 Difference]: Finished difference Result 62559 states and 91271 transitions. [2021-11-13 17:34:07,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:34:07,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 5 states have internal predecessors, (184), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 314 [2021-11-13 17:34:07,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:07,464 INFO L225 Difference]: With dead ends: 62559 [2021-11-13 17:34:07,464 INFO L226 Difference]: Without dead ends: 34975 [2021-11-13 17:34:07,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:34:07,533 INFO L933 BasicCegarLoop]: 1920 mSDtfsCounter, 2188 mSDsluCounter, 6075 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 1372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9339.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 7995 SdHoareTripleChecker+Invalid, 4915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.89ms SdHoareTripleChecker+Time, 1372 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10808.79ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:07,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2345 Valid, 7995 Invalid, 4915 Unknown, 0 Unchecked, 41.89ms Time], IncrementalHoareTripleChecker [1372 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 10808.79ms Time] [2021-11-13 17:34:07,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34975 states. [2021-11-13 17:34:09,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34975 to 29188. [2021-11-13 17:34:09,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29188 states, 21983 states have (on average 1.3436291679934496) internal successors, (29537), 22387 states have internal predecessors, (29537), 5795 states have call successors, (5795), 1251 states have call predecessors, (5795), 1409 states have return successors, (6448), 5915 states have call predecessors, (6448), 5794 states have call successors, (6448) [2021-11-13 17:34:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29188 states to 29188 states and 41780 transitions. [2021-11-13 17:34:09,250 INFO L78 Accepts]: Start accepts. Automaton has 29188 states and 41780 transitions. Word has length 314 [2021-11-13 17:34:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:09,251 INFO L470 AbstractCegarLoop]: Abstraction has 29188 states and 41780 transitions. [2021-11-13 17:34:09,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 5 states have internal predecessors, (184), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-13 17:34:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 29188 states and 41780 transitions. [2021-11-13 17:34:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-13 17:34:09,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:09,288 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:09,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 17:34:09,289 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:09,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:09,289 INFO L85 PathProgramCache]: Analyzing trace with hash -733109948, now seen corresponding path program 1 times [2021-11-13 17:34:09,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:09,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577713070] [2021-11-13 17:34:09,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:09,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:34:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:34:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:34:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:34:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:34:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:34:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:34:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:34:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:34:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:34:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:34:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 17:34:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 17:34:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 17:34:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 17:34:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:34:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 17:34:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:34:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:34:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:34:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:34:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:34:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:34:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:34:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:34:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:34:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:34:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:34:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 17:34:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:34:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 17:34:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 17:34:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:34:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 17:34:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 17:34:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-11-13 17:34:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-11-13 17:34:09,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:09,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577713070] [2021-11-13 17:34:09,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577713070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:34:09,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:34:09,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:34:09,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740281633] [2021-11-13 17:34:09,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:34:09,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:34:09,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:09,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:34:09,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:34:09,884 INFO L87 Difference]: Start difference. First operand 29188 states and 41780 transitions. Second operand has 6 states, 6 states have (on average 31.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-13 17:34:18,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:18,002 INFO L93 Difference]: Finished difference Result 64166 states and 93583 transitions. [2021-11-13 17:34:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:34:18,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 314 [2021-11-13 17:34:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:18,129 INFO L225 Difference]: With dead ends: 64166 [2021-11-13 17:34:18,129 INFO L226 Difference]: Without dead ends: 34990 [2021-11-13 17:34:18,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:34:18,207 INFO L933 BasicCegarLoop]: 1519 mSDtfsCounter, 652 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5565.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.05ms SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6519.62ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:18,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 4542 Invalid, 2910 Unknown, 0 Unchecked, 26.05ms Time], IncrementalHoareTripleChecker [388 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 6519.62ms Time] [2021-11-13 17:34:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34990 states. [2021-11-13 17:34:19,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34990 to 29227. [2021-11-13 17:34:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29227 states, 22009 states have (on average 1.3414512244990686) internal successors, (29524), 22413 states have internal predecessors, (29524), 5808 states have call successors, (5808), 1251 states have call predecessors, (5808), 1409 states have return successors, (6461), 5928 states have call predecessors, (6461), 5807 states have call successors, (6461) [2021-11-13 17:34:19,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29227 states to 29227 states and 41793 transitions. [2021-11-13 17:34:20,007 INFO L78 Accepts]: Start accepts. Automaton has 29227 states and 41793 transitions. Word has length 314 [2021-11-13 17:34:20,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:20,009 INFO L470 AbstractCegarLoop]: Abstraction has 29227 states and 41793 transitions. [2021-11-13 17:34:20,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-13 17:34:20,010 INFO L276 IsEmpty]: Start isEmpty. Operand 29227 states and 41793 transitions. [2021-11-13 17:34:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-13 17:34:20,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:20,063 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:20,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 17:34:20,064 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:20,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:20,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1928465655, now seen corresponding path program 1 times [2021-11-13 17:34:20,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:20,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461298573] [2021-11-13 17:34:20,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:20,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:20,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:34:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:20,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:34:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:20,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:34:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:20,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:34:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:20,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:34:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:20,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:34:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:20,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:34:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:34:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:34:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:34:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:34:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 17:34:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 17:34:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 17:34:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 17:34:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:34:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 17:34:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 17:34:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:34:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:34:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:34:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:34:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:34:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:34:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:34:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:34:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:22,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:34:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:22,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:34:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:22,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 17:34:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:22,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:34:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:22,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:34:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:22,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:34:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:22,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 17:34:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-13 17:34:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 17:34:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:22,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-13 17:34:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-11-13 17:34:22,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:22,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461298573] [2021-11-13 17:34:22,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461298573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:34:22,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614540791] [2021-11-13 17:34:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:22,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:34:22,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:34:22,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:34:22,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:34:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:23,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2314 conjuncts, 138 conjunts are in the unsatisfiable core [2021-11-13 17:34:23,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:34:48,707 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 17:34:48,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 136 treesize of output 313 [2021-11-13 17:34:48,771 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 17:34:48,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 301 treesize of output 325 [2021-11-13 17:34:50,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 11 [2021-11-13 17:34:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 164 proven. 5 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-11-13 17:34:50,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:34:53,595 INFO L354 Elim1Store]: treesize reduction 8, result has 70.4 percent of original size [2021-11-13 17:34:53,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2021-11-13 17:34:53,800 INFO L354 Elim1Store]: treesize reduction 6, result has 60.0 percent of original size [2021-11-13 17:34:53,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 13 [2021-11-13 17:34:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 8 proven. 67 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-13 17:34:54,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614540791] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:34:54,554 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:34:54,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 18] total 55 [2021-11-13 17:34:54,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607921989] [2021-11-13 17:34:54,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:34:54,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-13 17:34:54,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-13 17:34:54,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2814, Unknown=5, NotChecked=0, Total=2970 [2021-11-13 17:34:54,564 INFO L87 Difference]: Start difference. First operand 29227 states and 41793 transitions. Second operand has 55 states, 49 states have (on average 8.204081632653061) internal successors, (402), 39 states have internal predecessors, (402), 16 states have call successors, (100), 8 states have call predecessors, (100), 12 states have return successors, (93), 18 states have call predecessors, (93), 16 states have call successors, (93) [2021-11-13 17:36:25,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:27,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:01,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:01,191 INFO L93 Difference]: Finished difference Result 71760 states and 107537 transitions. [2021-11-13 17:37:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-11-13 17:37:01,193 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 49 states have (on average 8.204081632653061) internal successors, (402), 39 states have internal predecessors, (402), 16 states have call successors, (100), 8 states have call predecessors, (100), 12 states have return successors, (93), 18 states have call predecessors, (93), 16 states have call successors, (93) Word has length 316 [2021-11-13 17:37:01,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:01,698 INFO L225 Difference]: With dead ends: 71760 [2021-11-13 17:37:01,698 INFO L226 Difference]: Without dead ends: 42545 [2021-11-13 17:37:01,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3153 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=755, Invalid=13044, Unknown=7, NotChecked=0, Total=13806 [2021-11-13 17:37:01,873 INFO L933 BasicCegarLoop]: 1704 mSDtfsCounter, 1972 mSDsluCounter, 38690 mSDsCounter, 0 mSdLazyCounter, 32280 mSolverCounterSat, 1340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93966.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2141 SdHoareTripleChecker+Valid, 40394 SdHoareTripleChecker+Invalid, 37923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 305.20ms SdHoareTripleChecker+Time, 1340 IncrementalHoareTripleChecker+Valid, 32280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4303 IncrementalHoareTripleChecker+Unchecked, 109146.05ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:01,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2141 Valid, 40394 Invalid, 37923 Unknown, 0 Unchecked, 305.20ms Time], IncrementalHoareTripleChecker [1340 Valid, 32280 Invalid, 0 Unknown, 4303 Unchecked, 109146.05ms Time] [2021-11-13 17:37:01,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42545 states. [2021-11-13 17:37:04,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42545 to 31313. [2021-11-13 17:37:04,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31313 states, 23585 states have (on average 1.340809836760653) internal successors, (31623), 24135 states have internal predecessors, (31623), 6208 states have call successors, (6208), 1283 states have call predecessors, (6208), 1519 states have return successors, (7185), 6276 states have call predecessors, (7185), 6207 states have call successors, (7185) [2021-11-13 17:37:04,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31313 states to 31313 states and 45016 transitions. [2021-11-13 17:37:04,446 INFO L78 Accepts]: Start accepts. Automaton has 31313 states and 45016 transitions. Word has length 316 [2021-11-13 17:37:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:04,447 INFO L470 AbstractCegarLoop]: Abstraction has 31313 states and 45016 transitions. [2021-11-13 17:37:04,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 49 states have (on average 8.204081632653061) internal successors, (402), 39 states have internal predecessors, (402), 16 states have call successors, (100), 8 states have call predecessors, (100), 12 states have return successors, (93), 18 states have call predecessors, (93), 16 states have call successors, (93) [2021-11-13 17:37:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 31313 states and 45016 transitions. [2021-11-13 17:37:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-13 17:37:04,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:04,505 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:04,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-13 17:37:04,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:04,720 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:04,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:04,720 INFO L85 PathProgramCache]: Analyzing trace with hash 573794538, now seen corresponding path program 1 times [2021-11-13 17:37:04,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:04,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138838070] [2021-11-13 17:37:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:04,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:37:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:37:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:37:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:37:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 17:37:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:37:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:07,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:37:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:37:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:37:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:37:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 17:37:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-13 17:37:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 17:37:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:37:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 17:37:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:37:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 17:37:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 17:37:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:37:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:37:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 17:37:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:37:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:37:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:37:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:37:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:37:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:37:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 17:37:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:37:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-13 17:37:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-13 17:37:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:08,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-13 17:37:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:09,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-11-13 17:37:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2021-11-13 17:37:09,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:09,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138838070] [2021-11-13 17:37:09,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138838070] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:37:09,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303864364] [2021-11-13 17:37:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:09,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:09,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:09,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:37:09,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:37:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2328 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-13 17:37:10,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:10,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-13 17:37:11,518 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 17:37:11,519 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 [2021-11-13 17:37:11,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-13 17:37:11,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 17:37:13,780 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memset_#t~loopctr854_14| Int) (|#Ultimate.C_memset_#value| Int) (|#Ultimate.C_memset_#ptr.offset| Int) (|#Ultimate.C_memset_#ptr.base| Int)) (let ((.cse0 (+ |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr854_14|))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.offset)| |#Ultimate.C_memset_#ptr.base|) .cse0 (mod |#Ultimate.C_memset_#value| 256)))) (= (store |c_old(#memory_$Pointer$.base)| |#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |#Ultimate.C_memset_#ptr.base|) .cse0 0)) |c_#memory_$Pointer$.base|)))) is different from true [2021-11-13 17:37:13,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 37 treesize of output 33 [2021-11-13 17:37:13,858 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-11-13 17:37:13,858 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 40 treesize of output 49 [2021-11-13 17:37:14,256 INFO L354 Elim1Store]: treesize reduction 218, result has 14.8 percent of original size [2021-11-13 17:37:14,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 196 treesize of output 163 [2021-11-13 17:37:14,447 INFO L354 Elim1Store]: treesize reduction 242, result has 36.1 percent of original size [2021-11-13 17:37:14,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 166 treesize of output 241 [2021-11-13 17:37:15,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:37:15,072 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 49 treesize of output 29 [2021-11-13 17:37:15,108 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-13 17:37:15,108 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 49 treesize of output 29 [2021-11-13 17:37:15,170 INFO L354 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2021-11-13 17:37:15,170 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 82 [2021-11-13 17:37:15,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 73 treesize of output 65 [2021-11-13 17:37:15,196 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-11-13 17:37:15,196 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 55 [2021-11-13 17:37:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 1 not checked. [2021-11-13 17:37:16,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:18,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 128 treesize of output 114 [2021-11-13 17:37:18,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-13 17:37:18,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:37:18,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-13 17:37:18,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058588092] [2021-11-13 17:37:18,896 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 17:37:18,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 17:37:18,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:18,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 17:37:18,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1226, Unknown=1, NotChecked=70, Total=1406 [2021-11-13 17:37:18,908 INFO L87 Difference]: Start difference. First operand 31313 states and 45016 transitions. Second operand has 12 states, 12 states have (on average 16.0) internal successors, (192), 8 states have internal predecessors, (192), 3 states have call successors, (37), 6 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-13 17:37:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 17:37:18,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 450 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=109, Invalid=1226, Unknown=1, NotChecked=70, Total=1406 [2021-11-13 17:37:18,911 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:18,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 0.01ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 17:37:18,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:19,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:19,120 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4ee710a9 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:37:19,124 INFO L158 Benchmark]: Toolchain (without parser) took 377943.98ms. Allocated memory was 136.3MB in the beginning and 5.1GB in the end (delta: 4.9GB). Free memory was 93.2MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2021-11-13 17:37:19,124 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 94.4MB. Free memory was 49.1MB in the beginning and 49.1MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:37:19,125 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2310.48ms. Allocated memory was 136.3MB in the beginning and 169.9MB in the end (delta: 33.6MB). Free memory was 93.0MB in the beginning and 101.2MB in the end (delta: -8.2MB). Peak memory consumption was 60.9MB. Max. memory is 16.1GB. [2021-11-13 17:37:19,125 INFO L158 Benchmark]: Boogie Procedure Inliner took 248.08ms. Allocated memory is still 169.9MB. Free memory was 101.2MB in the beginning and 83.2MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-13 17:37:19,125 INFO L158 Benchmark]: Boogie Preprocessor took 247.15ms. Allocated memory is still 169.9MB. Free memory was 83.2MB in the beginning and 100.0MB in the end (delta: -16.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-13 17:37:19,126 INFO L158 Benchmark]: RCFGBuilder took 4112.98ms. Allocated memory was 169.9MB in the beginning and 289.4MB in the end (delta: 119.5MB). Free memory was 100.0MB in the beginning and 126.5MB in the end (delta: -26.5MB). Peak memory consumption was 97.2MB. Max. memory is 16.1GB. [2021-11-13 17:37:19,126 INFO L158 Benchmark]: TraceAbstraction took 371015.19ms. Allocated memory was 289.4MB in the beginning and 5.1GB in the end (delta: 4.8GB). Free memory was 126.5MB in the beginning and 3.3GB in the end (delta: -3.1GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2021-11-13 17:37:19,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 94.4MB. Free memory was 49.1MB in the beginning and 49.1MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2310.48ms. Allocated memory was 136.3MB in the beginning and 169.9MB in the end (delta: 33.6MB). Free memory was 93.0MB in the beginning and 101.2MB in the end (delta: -8.2MB). Peak memory consumption was 60.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 248.08ms. Allocated memory is still 169.9MB. Free memory was 101.2MB in the beginning and 83.2MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 247.15ms. Allocated memory is still 169.9MB. Free memory was 83.2MB in the beginning and 100.0MB in the end (delta: -16.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * RCFGBuilder took 4112.98ms. Allocated memory was 169.9MB in the beginning and 289.4MB in the end (delta: 119.5MB). Free memory was 100.0MB in the beginning and 126.5MB in the end (delta: -26.5MB). Peak memory consumption was 97.2MB. Max. memory is 16.1GB. * TraceAbstraction took 371015.19ms. Allocated memory was 289.4MB in the beginning and 5.1GB in the end (delta: 4.8GB). Free memory was 126.5MB in the beginning and 3.3GB in the end (delta: -3.1GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4ee710a9 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4ee710a9: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:37:19,364 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-13 17:37:19,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y --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 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:37:22,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:37:22,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:37:22,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:37:22,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:37:22,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:37:22,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:37:22,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:37:22,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:37:22,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:37:22,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:37:22,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:37:22,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:37:22,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:37:22,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:37:22,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:37:22,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:37:22,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:37:22,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:37:22,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:37:22,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:37:22,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:37:22,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:37:22,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:37:22,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:37:22,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:37:22,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:37:22,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:37:22,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:37:22,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:37:22,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:37:22,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:37:22,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:37:22,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:37:22,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:37:22,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:37:22,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:37:22,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:37:22,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:37:22,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:37:22,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:37:22,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-13 17:37:22,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:37:22,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:37:22,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:37:22,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:37:22,379 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:37:22,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:37:22,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:37:22,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:37:22,380 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:37:22,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:37:22,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:37:22,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:37:22,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:37:22,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:37:22,382 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:37:22,382 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:37:22,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:37:22,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:37:22,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:37:22,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:37:22,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:37:22,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:37:22,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:37:22,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:37:22,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:37:22,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:37:22,385 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:37:22,385 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:37:22,385 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:37:22,385 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:37:22,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:37:22,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:37:22,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:37:22,386 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e [2021-11-13 17:37:22,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:37:22,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:37:22,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:37:22,782 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:37:22,785 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:37:22,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-13 17:37:22,860 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/data/424c5d001/c0044b28f18b431786518137fd14b00e/FLAG765b20f95 [2021-11-13 17:37:23,941 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:37:23,942 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-13 17:37:23,984 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/data/424c5d001/c0044b28f18b431786518137fd14b00e/FLAG765b20f95 [2021-11-13 17:37:24,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/data/424c5d001/c0044b28f18b431786518137fd14b00e [2021-11-13 17:37:24,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:37:24,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:37:24,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:37:24,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:37:24,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:37:24,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:37:24" (1/1) ... [2021-11-13 17:37:24,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6f9e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:24, skipping insertion in model container [2021-11-13 17:37:24,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:37:24" (1/1) ... [2021-11-13 17:37:24,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:37:24,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:37:25,550 WARN L228 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_4415898b-4aa3-42ca-92af-fcda553efe3f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-13 17:37:26,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:37:26,554 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:37:26,757 WARN L228 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_4415898b-4aa3-42ca-92af-fcda553efe3f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-13 17:37:27,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:37:27,294 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:37:27,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:27 WrapperNode [2021-11-13 17:37:27,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:37:27,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:37:27,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:37:27,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:37:27,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:27" (1/1) ... [2021-11-13 17:37:27,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:27" (1/1) ... [2021-11-13 17:37:27,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:37:27,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:37:27,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:37:27,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:37:27,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:27" (1/1) ... [2021-11-13 17:37:27,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:27" (1/1) ... [2021-11-13 17:37:27,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:27" (1/1) ... [2021-11-13 17:37:27,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:27" (1/1) ... [2021-11-13 17:37:27,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:27" (1/1) ... [2021-11-13 17:37:27,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:27" (1/1) ... [2021-11-13 17:37:27,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:27" (1/1) ... [2021-11-13 17:37:28,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:37:28,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:37:28,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:37:28,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:37:28,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:27" (1/1) ... [2021-11-13 17:37:28,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:37:28,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:28,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:37:28,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:37:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure dlci_to_q922 [2021-11-13 17:37:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure dlci_to_q922 [2021-11-13 17:37:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:37:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 17:37:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:37:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:37:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 17:37:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:37:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:37:28,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:37:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure dev_queue_xmit [2021-11-13 17:37:28,149 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_queue_xmit [2021-11-13 17:37:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure state [2021-11-13 17:37:28,149 INFO L138 BoogieDeclarations]: Found implementation of procedure state [2021-11-13 17:37:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure fr_hard_header [2021-11-13 17:37:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_hard_header [2021-11-13 17:37:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure find_pvc [2021-11-13 17:37:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure find_pvc [2021-11-13 17:37:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-11-13 17:37:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-11-13 17:37:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-13 17:37:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-13 17:37:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 17:37:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 17:37:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-13 17:37:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-13 17:37:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-13 17:37:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-13 17:37:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_carrier [2021-11-13 17:37:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_carrier [2021-11-13 17:37:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:37:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:37:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_2 [2021-11-13 17:37:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_2 [2021-11-13 17:37:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-13 17:37:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-13 17:37:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 17:37:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 17:37:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 17:37:28,155 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 17:37:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure fr_rx [2021-11-13 17:37:28,155 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_rx [2021-11-13 17:37:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_ioctl [2021-11-13 17:37:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_ioctl [2021-11-13 17:37:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-13 17:37:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-13 17:37:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:37:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:37:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure fr_ioctl [2021-11-13 17:37:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_ioctl [2021-11-13 17:37:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-13 17:37:28,158 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-13 17:37:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 17:37:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 17:37:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 17:37:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 17:37:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-13 17:37:28,162 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-13 17:37:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-13 17:37:28,163 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-13 17:37:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:37:28,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:37:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2021-11-13 17:37:28,164 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2021-11-13 17:37:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:37:28,165 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:37:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:37:28,166 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:37:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:37:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2021-11-13 17:37:28,167 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2021-11-13 17:37:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 17:37:28,167 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 17:37:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-13 17:37:28,167 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-13 17:37:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure fr_log_dlci_active [2021-11-13 17:37:28,168 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_log_dlci_active [2021-11-13 17:37:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:37:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:37:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure delete_unused_pvcs [2021-11-13 17:37:28,169 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_unused_pvcs [2021-11-13 17:37:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 17:37:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 17:37:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-11-13 17:37:28,170 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-11-13 17:37:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 17:37:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-13 17:37:28,171 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-13 17:37:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure pvc_is_used [2021-11-13 17:37:28,172 INFO L138 BoogieDeclarations]: Found implementation of procedure pvc_is_used [2021-11-13 17:37:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:37:28,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-13 17:37:28,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-13 17:37:28,173 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-13 17:37:28,173 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-13 17:37:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure fr_set_link_state [2021-11-13 17:37:28,175 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_set_link_state [2021-11-13 17:37:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure fr_lmi_send [2021-11-13 17:37:28,176 INFO L138 BoogieDeclarations]: Found implementation of procedure fr_lmi_send [2021-11-13 17:37:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 17:37:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:37:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 17:37:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:37:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:37:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:37:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-13 17:37:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-13 17:37:28,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:37:28,179 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-13 17:37:28,179 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-13 17:37:28,179 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 17:37:28,180 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 17:37:28,180 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-13 17:37:28,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-13 17:37:28,180 INFO L130 BoogieDeclarations]: Found specification of procedure get_dev_p [2021-11-13 17:37:28,181 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dev_p [2021-11-13 17:37:28,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 17:37:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2021-11-13 17:37:28,186 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2021-11-13 17:37:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure add_pvc [2021-11-13 17:37:28,186 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pvc [2021-11-13 17:37:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice [2021-11-13 17:37:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice [2021-11-13 17:37:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 17:37:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 17:37:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-13 17:37:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-13 17:37:28,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:37:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:37:29,440 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:37:42,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:37:42,819 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-13 17:37:42,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:37:42 BoogieIcfgContainer [2021-11-13 17:37:42,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:37:42,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:37:42,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:37:42,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:37:42,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:37:24" (1/3) ... [2021-11-13 17:37:42,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e886d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:37:42, skipping insertion in model container [2021-11-13 17:37:42,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:27" (2/3) ... [2021-11-13 17:37:42,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e886d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:37:42, skipping insertion in model container [2021-11-13 17:37:42,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:37:42" (3/3) ... [2021-11-13 17:37:42,843 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-13 17:37:42,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:37:42,852 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:37:42,935 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:37:42,944 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 [2021-11-13 17:37:42,944 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:37:43,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 1162 states, 845 states have (on average 1.3775147928994083) internal successors, (1164), 861 states have internal predecessors, (1164), 265 states have call successors, (265), 51 states have call predecessors, (265), 50 states have return successors, (261), 260 states have call predecessors, (261), 261 states have call successors, (261) [2021-11-13 17:37:43,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-13 17:37:43,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:43,029 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:43,030 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:43,044 INFO L85 PathProgramCache]: Analyzing trace with hash 16503480, now seen corresponding path program 1 times [2021-11-13 17:37:43,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:43,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95720813] [2021-11-13 17:37:43,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:43,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:43,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:43,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:43,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:37:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:44,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:37:44,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 17:37:44,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 17:37:44,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:44,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95720813] [2021-11-13 17:37:44,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95720813] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:44,433 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:44,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:37:44,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464060091] [2021-11-13 17:37:44,436 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:44,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:37:44,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:44,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:37:44,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:37:44,484 INFO L87 Difference]: Start difference. First operand has 1162 states, 845 states have (on average 1.3775147928994083) internal successors, (1164), 861 states have internal predecessors, (1164), 265 states have call successors, (265), 51 states have call predecessors, (265), 50 states have return successors, (261), 260 states have call predecessors, (261), 261 states have call successors, (261) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:37:46,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:50,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:50,157 INFO L93 Difference]: Finished difference Result 4572 states and 6810 transitions. [2021-11-13 17:37:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:37:50,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2021-11-13 17:37:50,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:50,206 INFO L225 Difference]: With dead ends: 4572 [2021-11-13 17:37:50,206 INFO L226 Difference]: Without dead ends: 3394 [2021-11-13 17:37:50,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:37:50,226 INFO L933 BasicCegarLoop]: 2234 mSDtfsCounter, 4374 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 510 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4684.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 5012 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.55ms SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5217.44ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:50,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4374 Valid, 5012 Invalid, 1049 Unknown, 0 Unchecked, 45.55ms Time], IncrementalHoareTripleChecker [510 Valid, 538 Invalid, 1 Unknown, 0 Unchecked, 5217.44ms Time] [2021-11-13 17:37:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3394 states. [2021-11-13 17:37:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3394 to 3394. [2021-11-13 17:37:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 2477 states have (on average 1.3677836092046831) internal successors, (3388), 2507 states have internal predecessors, (3388), 769 states have call successors, (769), 148 states have call predecessors, (769), 147 states have return successors, (768), 765 states have call predecessors, (768), 768 states have call successors, (768) [2021-11-13 17:37:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 4925 transitions. [2021-11-13 17:37:50,570 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 4925 transitions. Word has length 41 [2021-11-13 17:37:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:50,571 INFO L470 AbstractCegarLoop]: Abstraction has 3394 states and 4925 transitions. [2021-11-13 17:37:50,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:37:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 4925 transitions. [2021-11-13 17:37:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-13 17:37:50,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:50,576 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:50,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:50,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:50,797 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:50,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:50,797 INFO L85 PathProgramCache]: Analyzing trace with hash 202884705, now seen corresponding path program 1 times [2021-11-13 17:37:50,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:50,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664548534] [2021-11-13 17:37:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:50,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:50,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:50,804 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:50,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:37:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:37:51,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 17:37:51,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 17:37:51,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:51,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664548534] [2021-11-13 17:37:51,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664548534] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:51,662 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:51,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:37:51,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316021034] [2021-11-13 17:37:51,663 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:51,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:37:51,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:37:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:37:51,666 INFO L87 Difference]: Start difference. First operand 3394 states and 4925 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:37:52,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:52,550 INFO L93 Difference]: Finished difference Result 6775 states and 9832 transitions. [2021-11-13 17:37:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:37:52,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2021-11-13 17:37:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:52,585 INFO L225 Difference]: With dead ends: 6775 [2021-11-13 17:37:52,585 INFO L226 Difference]: Without dead ends: 3393 [2021-11-13 17:37:52,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:37:52,607 INFO L933 BasicCegarLoop]: 2076 mSDtfsCounter, 2089 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 510.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.18ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 598.59ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:52,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2089 Valid, 3819 Invalid, 209 Unknown, 0 Unchecked, 16.18ms Time], IncrementalHoareTripleChecker [105 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 598.59ms Time] [2021-11-13 17:37:52,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2021-11-13 17:37:52,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3393. [2021-11-13 17:37:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 2476 states have (on average 1.3667205169628434) internal successors, (3384), 2506 states have internal predecessors, (3384), 769 states have call successors, (769), 148 states have call predecessors, (769), 147 states have return successors, (768), 765 states have call predecessors, (768), 768 states have call successors, (768) [2021-11-13 17:37:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4921 transitions. [2021-11-13 17:37:52,963 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4921 transitions. Word has length 44 [2021-11-13 17:37:52,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:52,964 INFO L470 AbstractCegarLoop]: Abstraction has 3393 states and 4921 transitions. [2021-11-13 17:37:52,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 17:37:52,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4921 transitions. [2021-11-13 17:37:52,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 17:37:52,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:52,983 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-11-13 17:37:53,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 17:37:53,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:53,200 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:53,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash -94841370, now seen corresponding path program 1 times [2021-11-13 17:37:53,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:53,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743810379] [2021-11-13 17:37:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:53,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:53,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:53,205 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:53,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:37:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:53,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:37:53,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 17:37:54,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 17:37:54,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:54,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743810379] [2021-11-13 17:37:54,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743810379] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:54,544 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:54,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 17:37:54,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024111240] [2021-11-13 17:37:54,544 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:54,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:37:54,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:54,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:37:54,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:37:54,545 INFO L87 Difference]: Start difference. First operand 3393 states and 4921 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:37:55,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:55,276 INFO L93 Difference]: Finished difference Result 10152 states and 14807 transitions. [2021-11-13 17:37:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:37:55,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2021-11-13 17:37:55,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:55,349 INFO L225 Difference]: With dead ends: 10152 [2021-11-13 17:37:55,349 INFO L226 Difference]: Without dead ends: 6766 [2021-11-13 17:37:55,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:37:55,382 INFO L933 BasicCegarLoop]: 1981 mSDtfsCounter, 1630 mSDsluCounter, 9579 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 232.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 11560 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.41ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 271.81ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:55,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1630 Valid, 11560 Invalid, 64 Unknown, 0 Unchecked, 32.41ms Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 271.81ms Time] [2021-11-13 17:37:55,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6766 states. [2021-11-13 17:37:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6766 to 6754. [2021-11-13 17:37:55,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6754 states, 4926 states have (on average 1.3672350791717418) internal successors, (6735), 4986 states have internal predecessors, (6735), 1533 states have call successors, (1533), 295 states have call predecessors, (1533), 294 states have return successors, (1586), 1526 states have call predecessors, (1586), 1532 states have call successors, (1586) [2021-11-13 17:37:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6754 states to 6754 states and 9854 transitions. [2021-11-13 17:37:55,967 INFO L78 Accepts]: Start accepts. Automaton has 6754 states and 9854 transitions. Word has length 66 [2021-11-13 17:37:55,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:55,970 INFO L470 AbstractCegarLoop]: Abstraction has 6754 states and 9854 transitions. [2021-11-13 17:37:55,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 17:37:55,970 INFO L276 IsEmpty]: Start isEmpty. Operand 6754 states and 9854 transitions. [2021-11-13 17:37:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 17:37:55,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:55,992 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2021-11-13 17:37:56,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:56,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:37:56,216 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:56,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:56,217 INFO L85 PathProgramCache]: Analyzing trace with hash -248182647, now seen corresponding path program 1 times [2021-11-13 17:37:56,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:37:56,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377893293] [2021-11-13 17:37:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:56,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:37:56,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:37:56,222 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:37:56,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:37:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:57,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:37:57,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-13 17:37:57,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-13 17:37:58,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:37:58,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377893293] [2021-11-13 17:37:58,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377893293] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:58,010 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:58,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:37:58,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003977694] [2021-11-13 17:37:58,011 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:58,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:37:58,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:37:58,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:37:58,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:37:58,014 INFO L87 Difference]: Start difference. First operand 6754 states and 9854 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-13 17:38:00,094 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:04,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:04,381 INFO L93 Difference]: Finished difference Result 26070 states and 38010 transitions. [2021-11-13 17:38:04,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:38:04,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 103 [2021-11-13 17:38:04,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:04,622 INFO L225 Difference]: With dead ends: 26070 [2021-11-13 17:38:04,623 INFO L226 Difference]: Without dead ends: 19328 [2021-11-13 17:38:04,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:38:04,677 INFO L933 BasicCegarLoop]: 3384 mSDtfsCounter, 3160 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 295 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4709.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3160 SdHoareTripleChecker+Valid, 6024 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.72ms SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5209.25ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:04,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3160 Valid, 6024 Invalid, 854 Unknown, 0 Unchecked, 35.72ms Time], IncrementalHoareTripleChecker [295 Valid, 558 Invalid, 1 Unknown, 0 Unchecked, 5209.25ms Time] [2021-11-13 17:38:04,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19328 states. [2021-11-13 17:38:06,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19328 to 19304. [2021-11-13 17:38:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19304 states, 14082 states have (on average 1.3653600340860672) internal successors, (19227), 14266 states have internal predecessors, (19227), 4345 states have call successors, (4345), 877 states have call predecessors, (4345), 876 states have return successors, (4488), 4322 states have call predecessors, (4488), 4344 states have call successors, (4488) [2021-11-13 17:38:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19304 states to 19304 states and 28060 transitions. [2021-11-13 17:38:06,341 INFO L78 Accepts]: Start accepts. Automaton has 19304 states and 28060 transitions. Word has length 103 [2021-11-13 17:38:06,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:06,342 INFO L470 AbstractCegarLoop]: Abstraction has 19304 states and 28060 transitions. [2021-11-13 17:38:06,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-13 17:38:06,343 INFO L276 IsEmpty]: Start isEmpty. Operand 19304 states and 28060 transitions. [2021-11-13 17:38:06,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 17:38:06,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:06,398 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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] [2021-11-13 17:38:06,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:38:06,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:38:06,612 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:06,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:06,612 INFO L85 PathProgramCache]: Analyzing trace with hash 297596298, now seen corresponding path program 1 times [2021-11-13 17:38:06,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:38:06,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892693705] [2021-11-13 17:38:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:06,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:38:06,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:38:06,616 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:38:06,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:38:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:38:07,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:38:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-13 17:38:07,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:38:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-13 17:38:08,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:38:08,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892693705] [2021-11-13 17:38:08,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892693705] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:08,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:08,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:38:08,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740220468] [2021-11-13 17:38:08,086 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:08,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:38:08,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:38:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:38:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:38:08,087 INFO L87 Difference]: Start difference. First operand 19304 states and 28060 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:38:09,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:09,492 INFO L93 Difference]: Finished difference Result 38248 states and 55581 transitions. [2021-11-13 17:38:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:38:09,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2021-11-13 17:38:09,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:09,736 INFO L225 Difference]: With dead ends: 38248 [2021-11-13 17:38:09,737 INFO L226 Difference]: Without dead ends: 18956 [2021-11-13 17:38:09,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:38:09,843 INFO L933 BasicCegarLoop]: 2264 mSDtfsCounter, 1482 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 193.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.02ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 228.57ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:09,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 3880 Invalid, 35 Unknown, 0 Unchecked, 15.02ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 228.57ms Time] [2021-11-13 17:38:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18956 states. [2021-11-13 17:38:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18956 to 18944. [2021-11-13 17:38:11,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18944 states, 13788 states have (on average 1.3636495503336235) internal successors, (18802), 13974 states have internal predecessors, (18802), 4289 states have call successors, (4289), 867 states have call predecessors, (4289), 866 states have return successors, (4429), 4264 states have call predecessors, (4429), 4288 states have call successors, (4429) [2021-11-13 17:38:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18944 states to 18944 states and 27520 transitions. [2021-11-13 17:38:12,047 INFO L78 Accepts]: Start accepts. Automaton has 18944 states and 27520 transitions. Word has length 116 [2021-11-13 17:38:12,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:12,048 INFO L470 AbstractCegarLoop]: Abstraction has 18944 states and 27520 transitions. [2021-11-13 17:38:12,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:38:12,048 INFO L276 IsEmpty]: Start isEmpty. Operand 18944 states and 27520 transitions. [2021-11-13 17:38:12,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 17:38:12,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:12,105 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:38:12,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:38:12,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:38:12,319 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:12,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:12,320 INFO L85 PathProgramCache]: Analyzing trace with hash -159171181, now seen corresponding path program 1 times [2021-11-13 17:38:12,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:38:12,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685761352] [2021-11-13 17:38:12,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:12,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:38:12,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:38:12,324 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:38:12,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:38:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:13,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:38:13,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:38:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-13 17:38:13,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:38:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-13 17:38:13,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:38:13,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685761352] [2021-11-13 17:38:13,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685761352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:13,986 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:13,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:38:13,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978560704] [2021-11-13 17:38:13,987 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:13,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:38:13,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:38:13,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:38:13,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:38:13,989 INFO L87 Difference]: Start difference. First operand 18944 states and 27520 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 17:38:16,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:18,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:22,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:22,729 INFO L93 Difference]: Finished difference Result 60940 states and 88483 transitions. [2021-11-13 17:38:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:38:22,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 122 [2021-11-13 17:38:22,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:23,017 INFO L225 Difference]: With dead ends: 60940 [2021-11-13 17:38:23,017 INFO L226 Difference]: Without dead ends: 44024 [2021-11-13 17:38:23,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:38:23,094 INFO L933 BasicCegarLoop]: 3433 mSDtfsCounter, 3332 mSDsluCounter, 11261 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 166 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6182.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 14694 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.79ms SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6559.57ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:23,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3332 Valid, 14694 Invalid, 761 Unknown, 0 Unchecked, 42.79ms Time], IncrementalHoareTripleChecker [166 Valid, 593 Invalid, 2 Unknown, 0 Unchecked, 6559.57ms Time] [2021-11-13 17:38:23,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44024 states. [2021-11-13 17:38:26,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44024 to 31464. [2021-11-13 17:38:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31464 states, 22896 states have (on average 1.3630765199161425) internal successors, (31209), 23210 states have internal predecessors, (31209), 7125 states have call successors, (7125), 1443 states have call predecessors, (7125), 1442 states have return successors, (7355), 7080 states have call predecessors, (7355), 7124 states have call successors, (7355) [2021-11-13 17:38:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31464 states to 31464 states and 45689 transitions. [2021-11-13 17:38:26,230 INFO L78 Accepts]: Start accepts. Automaton has 31464 states and 45689 transitions. Word has length 122 [2021-11-13 17:38:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:26,231 INFO L470 AbstractCegarLoop]: Abstraction has 31464 states and 45689 transitions. [2021-11-13 17:38:26,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 17:38:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 31464 states and 45689 transitions. [2021-11-13 17:38:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-13 17:38:26,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:26,305 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:38:26,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:38:26,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:38:26,520 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1752037865, now seen corresponding path program 1 times [2021-11-13 17:38:26,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:38:26,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328658766] [2021-11-13 17:38:26,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:26,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:38:26,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:38:26,525 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:38:26,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:38:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:38:27,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:38:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-13 17:38:27,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:38:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-13 17:38:28,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:38:28,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328658766] [2021-11-13 17:38:28,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328658766] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:28,028 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:28,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:38:28,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577776028] [2021-11-13 17:38:28,028 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:28,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:38:28,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:38:28,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:38:28,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:38:28,031 INFO L87 Difference]: Start difference. First operand 31464 states and 45689 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 17:38:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:29,560 INFO L93 Difference]: Finished difference Result 47284 states and 68999 transitions. [2021-11-13 17:38:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:38:29,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 124 [2021-11-13 17:38:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:29,807 INFO L225 Difference]: With dead ends: 47284 [2021-11-13 17:38:29,807 INFO L226 Difference]: Without dead ends: 31524 [2021-11-13 17:38:29,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:38:29,897 INFO L933 BasicCegarLoop]: 1664 mSDtfsCounter, 5 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.21ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.71ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:29,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 3320 Invalid, 4 Unknown, 0 Unchecked, 22.21ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 10.71ms Time] [2021-11-13 17:38:29,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31524 states. [2021-11-13 17:38:32,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31524 to 31524. [2021-11-13 17:38:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31524 states, 22941 states have (on average 1.3623643258794298) internal successors, (31254), 23270 states have internal predecessors, (31254), 7125 states have call successors, (7125), 1443 states have call predecessors, (7125), 1457 states have return successors, (7385), 7080 states have call predecessors, (7385), 7124 states have call successors, (7385) [2021-11-13 17:38:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31524 states to 31524 states and 45764 transitions. [2021-11-13 17:38:32,542 INFO L78 Accepts]: Start accepts. Automaton has 31524 states and 45764 transitions. Word has length 124 [2021-11-13 17:38:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:32,544 INFO L470 AbstractCegarLoop]: Abstraction has 31524 states and 45764 transitions. [2021-11-13 17:38:32,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 17:38:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 31524 states and 45764 transitions. [2021-11-13 17:38:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-13 17:38:32,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:32,604 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:38:32,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:38:32,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:38:32,820 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:32,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:32,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1535376202, now seen corresponding path program 1 times [2021-11-13 17:38:32,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:38:32,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559882378] [2021-11-13 17:38:32,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:32,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:38:32,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:38:32,824 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:38:32,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:38:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:33,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:38:33,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:38:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 17:38:34,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:38:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-13 17:38:35,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:38:35,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559882378] [2021-11-13 17:38:35,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559882378] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:35,028 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:35,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-13 17:38:35,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81183588] [2021-11-13 17:38:35,029 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:35,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:38:35,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:38:35,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:38:35,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:38:35,030 INFO L87 Difference]: Start difference. First operand 31524 states and 45764 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 6 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-13 17:38:37,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:39,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:39:01,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:39:01,291 INFO L93 Difference]: Finished difference Result 86701 states and 127361 transitions. [2021-11-13 17:39:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:39:01,292 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 6 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 126 [2021-11-13 17:39:01,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:39:01,858 INFO L225 Difference]: With dead ends: 86701 [2021-11-13 17:39:01,859 INFO L226 Difference]: Without dead ends: 55189 [2021-11-13 17:39:02,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:39:02,019 INFO L933 BasicCegarLoop]: 1902 mSDtfsCounter, 6088 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 5130 mSolverCounterSat, 2348 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21179.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6453 SdHoareTripleChecker+Valid, 5666 SdHoareTripleChecker+Invalid, 7480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 85.22ms SdHoareTripleChecker+Time, 2348 IncrementalHoareTripleChecker+Valid, 5130 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23432.02ms IncrementalHoareTripleChecker+Time [2021-11-13 17:39:02,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6453 Valid, 5666 Invalid, 7480 Unknown, 0 Unchecked, 85.22ms Time], IncrementalHoareTripleChecker [2348 Valid, 5130 Invalid, 2 Unknown, 0 Unchecked, 23432.02ms Time] [2021-11-13 17:39:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55189 states. [2021-11-13 17:39:05,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55189 to 53891. [2021-11-13 17:39:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53891 states, 39437 states have (on average 1.3588761822653852) internal successors, (53590), 40088 states have internal predecessors, (53590), 11870 states have call successors, (11870), 2449 states have call predecessors, (11870), 2583 states have return successors, (13218), 11848 states have call predecessors, (13218), 11869 states have call successors, (13218) [2021-11-13 17:39:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53891 states to 53891 states and 78678 transitions. [2021-11-13 17:39:05,766 INFO L78 Accepts]: Start accepts. Automaton has 53891 states and 78678 transitions. Word has length 126 [2021-11-13 17:39:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:39:05,766 INFO L470 AbstractCegarLoop]: Abstraction has 53891 states and 78678 transitions. [2021-11-13 17:39:05,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 6 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-13 17:39:05,767 INFO L276 IsEmpty]: Start isEmpty. Operand 53891 states and 78678 transitions. [2021-11-13 17:39:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-13 17:39:05,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:39:05,849 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:39:05,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:39:06,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:39:06,073 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:39:06,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:39:06,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1419893241, now seen corresponding path program 1 times [2021-11-13 17:39:06,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:39:06,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353015052] [2021-11-13 17:39:06,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:39:06,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:39:06,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:39:06,078 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:39:06,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:39:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:07,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:39:07,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:39:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-11-13 17:39:07,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:39:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-11-13 17:39:08,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:39:08,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353015052] [2021-11-13 17:39:08,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353015052] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:39:08,182 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:39:08,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:39:08,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558873184] [2021-11-13 17:39:08,182 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:39:08,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:39:08,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:39:08,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:39:08,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:39:08,184 INFO L87 Difference]: Start difference. First operand 53891 states and 78678 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-13 17:39:11,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:39:11,197 INFO L93 Difference]: Finished difference Result 119065 states and 176030 transitions. [2021-11-13 17:39:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:39:11,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 208 [2021-11-13 17:39:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:39:11,730 INFO L225 Difference]: With dead ends: 119065 [2021-11-13 17:39:11,731 INFO L226 Difference]: Without dead ends: 65186 [2021-11-13 17:39:12,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:39:12,225 INFO L933 BasicCegarLoop]: 1728 mSDtfsCounter, 141 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 337.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 5063 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.43ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 385.37ms IncrementalHoareTripleChecker+Time [2021-11-13 17:39:12,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 5063 Invalid, 68 Unknown, 0 Unchecked, 6.43ms Time], IncrementalHoareTripleChecker [14 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 385.37ms Time] [2021-11-13 17:39:12,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65186 states. [2021-11-13 17:39:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65186 to 63746. [2021-11-13 17:39:16,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63746 states, 47627 states have (on average 1.3570033804354673) internal successors, (64630), 48563 states have internal predecessors, (64630), 13535 states have call successors, (13535), 2449 states have call predecessors, (13535), 2583 states have return successors, (15108), 13588 states have call predecessors, (15108), 13534 states have call successors, (15108) [2021-11-13 17:39:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63746 states to 63746 states and 93273 transitions. [2021-11-13 17:39:16,593 INFO L78 Accepts]: Start accepts. Automaton has 63746 states and 93273 transitions. Word has length 208 [2021-11-13 17:39:16,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:39:16,594 INFO L470 AbstractCegarLoop]: Abstraction has 63746 states and 93273 transitions. [2021-11-13 17:39:16,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-13 17:39:16,595 INFO L276 IsEmpty]: Start isEmpty. Operand 63746 states and 93273 transitions. [2021-11-13 17:39:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-13 17:39:16,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:39:16,708 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:39:16,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:39:16,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:39:16,932 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:39:16,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:39:16,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1308316105, now seen corresponding path program 1 times [2021-11-13 17:39:16,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:39:16,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668229561] [2021-11-13 17:39:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:39:16,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:39:16,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:39:16,937 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:39:16,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:39:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:18,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:39:18,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:39:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-13 17:39:18,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:39:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-13 17:39:19,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:39:19,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668229561] [2021-11-13 17:39:19,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668229561] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:39:19,260 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:39:19,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 17:39:19,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255214329] [2021-11-13 17:39:19,261 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:39:19,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:39:19,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:39:19,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:39:19,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:39:19,263 INFO L87 Difference]: Start difference. First operand 63746 states and 93273 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 17:39:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:39:22,710 INFO L93 Difference]: Finished difference Result 127750 states and 188361 transitions. [2021-11-13 17:39:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:39:22,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 208 [2021-11-13 17:39:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:39:23,072 INFO L225 Difference]: With dead ends: 127750 [2021-11-13 17:39:23,073 INFO L226 Difference]: Without dead ends: 64016 [2021-11-13 17:39:23,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:39:23,403 INFO L933 BasicCegarLoop]: 1663 mSDtfsCounter, 2 mSDsluCounter, 4984 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6647 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.82ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.49ms IncrementalHoareTripleChecker+Time [2021-11-13 17:39:23,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6647 Invalid, 12 Unknown, 0 Unchecked, 15.82ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 41.49ms Time] [2021-11-13 17:39:23,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64016 states. [2021-11-13 17:39:26,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64016 to 63926. [2021-11-13 17:39:26,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63926 states, 47762 states have (on average 1.3559943050961014) internal successors, (64765), 48698 states have internal predecessors, (64765), 13535 states have call successors, (13535), 2449 states have call predecessors, (13535), 2628 states have return successors, (15184), 13633 states have call predecessors, (15184), 13534 states have call successors, (15184) [2021-11-13 17:39:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63926 states to 63926 states and 93484 transitions. [2021-11-13 17:39:27,115 INFO L78 Accepts]: Start accepts. Automaton has 63926 states and 93484 transitions. Word has length 208 [2021-11-13 17:39:27,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:39:27,115 INFO L470 AbstractCegarLoop]: Abstraction has 63926 states and 93484 transitions. [2021-11-13 17:39:27,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 17:39:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 63926 states and 93484 transitions. [2021-11-13 17:39:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-13 17:39:27,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:39:27,196 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 7, 7, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:39:27,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:39:27,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:39:27,412 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:39:27,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:39:27,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2081494971, now seen corresponding path program 1 times [2021-11-13 17:39:27,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:39:27,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318555103] [2021-11-13 17:39:27,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:39:27,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:39:27,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:39:27,415 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:39:27,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4415898b-4aa3-42ca-92af-fcda553efe3f/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:39:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:28,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-13 17:39:28,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:39:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-13 17:39:29,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:39:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2021-11-13 17:39:31,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:39:31,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318555103] [2021-11-13 17:39:31,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318555103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:39:31,587 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:39:31,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 13 [2021-11-13 17:39:31,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535117502] [2021-11-13 17:39:31,587 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:39:31,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 17:39:31,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:39:31,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 17:39:31,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:39:31,590 INFO L87 Difference]: Start difference. First operand 63926 states and 93484 transitions. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 10 states have internal predecessors, (108), 2 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (38), 5 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-13 17:39:36,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:39:36,096 INFO L93 Difference]: Finished difference Result 137590 states and 202443 transitions. [2021-11-13 17:39:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:39:36,098 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 10 states have internal predecessors, (108), 2 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (38), 5 states have call predecessors, (38), 2 states have call successors, (38) Word has length 215 [2021-11-13 17:39:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:39:36,519 INFO L225 Difference]: With dead ends: 137590 [2021-11-13 17:39:36,520 INFO L226 Difference]: Without dead ends: 73676 [2021-11-13 17:39:36,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:39:36,829 INFO L933 BasicCegarLoop]: 1758 mSDtfsCounter, 79 mSDsluCounter, 15712 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 403.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 17470 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 480.37ms IncrementalHoareTripleChecker+Time [2021-11-13 17:39:36,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 17470 Invalid, 109 Unknown, 0 Unchecked, 31.40ms Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 480.37ms Time] [2021-11-13 17:39:36,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73676 states.