./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:30:01,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:30:01,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:30:01,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:30:01,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:30:01,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:30:01,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:30:01,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:30:01,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:30:01,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:30:01,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:30:01,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:30:01,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:30:01,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:30:01,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:30:01,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:30:01,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:30:01,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:30:01,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:30:01,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:30:01,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:30:01,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:30:01,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:30:01,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:30:01,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:30:01,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:30:01,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:30:01,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:30:01,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:30:01,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:30:01,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:30:01,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:30:01,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:30:01,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:30:01,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:30:01,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:30:01,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:30:01,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:30:01,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:30:01,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:30:01,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:30:01,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:30:01,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:30:01,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:30:01,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:30:01,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:30:01,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:30:01,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:30:01,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:30:01,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:30:01,292 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:30:01,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:30:01,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:30:01,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:30:01,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:30:01,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:30:01,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:30:01,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:30:01,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:30:01,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:30:01,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:30:01,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:30:01,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:30:01,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:30:01,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:30:01,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:30:01,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:30:01,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:30:01,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:30:01,297 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:30:01,297 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:30:01,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:30:01,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:30:01,297 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2021-12-22 14:30:01,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:30:01,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:30:01,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:30:01,511 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:30:01,512 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:30:01,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-12-22 14:30:01,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8129c6d1a/f736bf4ba51748c5ab637bb58d0707a6/FLAG14c008696 [2021-12-22 14:30:02,089 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:30:02,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-12-22 14:30:02,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8129c6d1a/f736bf4ba51748c5ab637bb58d0707a6/FLAG14c008696 [2021-12-22 14:30:02,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8129c6d1a/f736bf4ba51748c5ab637bb58d0707a6 [2021-12-22 14:30:02,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:30:02,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:30:02,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:30:02,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:30:02,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:30:02,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:30:02" (1/1) ... [2021-12-22 14:30:02,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e321543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:02, skipping insertion in model container [2021-12-22 14:30:02,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:30:02" (1/1) ... [2021-12-22 14:30:02,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:30:02,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:30:02,849 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2021-12-22 14:30:02,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:30:02,992 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:30:03,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2021-12-22 14:30:03,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:30:03,209 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:30:03,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:03 WrapperNode [2021-12-22 14:30:03,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:30:03,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:30:03,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:30:03,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:30:03,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:03" (1/1) ... [2021-12-22 14:30:03,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:03" (1/1) ... [2021-12-22 14:30:03,439 INFO L137 Inliner]: procedures = 133, calls = 4943, calls flagged for inlining = 57, calls inlined = 51, statements flattened = 6018 [2021-12-22 14:30:03,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:30:03,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:30:03,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:30:03,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:30:03,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:03" (1/1) ... [2021-12-22 14:30:03,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:03" (1/1) ... [2021-12-22 14:30:03,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:03" (1/1) ... [2021-12-22 14:30:03,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:03" (1/1) ... [2021-12-22 14:30:03,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:03" (1/1) ... [2021-12-22 14:30:03,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:03" (1/1) ... [2021-12-22 14:30:03,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:03" (1/1) ... [2021-12-22 14:30:03,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:30:03,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:30:03,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:30:03,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:30:03,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:03" (1/1) ... [2021-12-22 14:30:03,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:30:03,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:30:03,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 14:30:03,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 14:30:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2021-12-22 14:30:03,811 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2021-12-22 14:30:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-22 14:30:03,811 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-22 14:30:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2021-12-22 14:30:03,811 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2021-12-22 14:30:03,811 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-22 14:30:03,811 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-22 14:30:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2021-12-22 14:30:03,812 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2021-12-22 14:30:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2021-12-22 14:30:03,812 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2021-12-22 14:30:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:30:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2021-12-22 14:30:03,812 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2021-12-22 14:30:03,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:30:03,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:30:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:30:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:30:03,813 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:30:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:30:03,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:30:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-22 14:30:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-22 14:30:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2021-12-22 14:30:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2021-12-22 14:30:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2021-12-22 14:30:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2021-12-22 14:30:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2021-12-22 14:30:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2021-12-22 14:30:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:30:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2021-12-22 14:30:03,815 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2021-12-22 14:30:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 14:30:03,815 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 14:30:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:30:03,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:30:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:30:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2021-12-22 14:30:03,816 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2021-12-22 14:30:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:30:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:30:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2021-12-22 14:30:03,816 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2021-12-22 14:30:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:30:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2021-12-22 14:30:03,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2021-12-22 14:30:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-12-22 14:30:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-22 14:30:03,817 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-22 14:30:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-22 14:30:03,818 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-22 14:30:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:30:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-22 14:30:03,818 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-22 14:30:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:30:03,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:30:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2021-12-22 14:30:03,820 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2021-12-22 14:30:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-22 14:30:03,820 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-22 14:30:04,085 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:30:04,087 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:30:13,078 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:30:13,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:30:13,088 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:30:13,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:30:13 BoogieIcfgContainer [2021-12-22 14:30:13,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:30:13,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:30:13,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:30:13,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:30:13,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:30:02" (1/3) ... [2021-12-22 14:30:13,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631d17e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:30:13, skipping insertion in model container [2021-12-22 14:30:13,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:03" (2/3) ... [2021-12-22 14:30:13,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631d17e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:30:13, skipping insertion in model container [2021-12-22 14:30:13,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:30:13" (3/3) ... [2021-12-22 14:30:13,102 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-12-22 14:30:13,105 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:30:13,106 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:30:13,153 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:30:13,160 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:30:13,160 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:30:13,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 499 states, 395 states have (on average 1.4329113924050634) internal successors, (566), 404 states have internal predecessors, (566), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-12-22 14:30:13,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 14:30:13,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:13,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:13,198 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:13,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1860140379, now seen corresponding path program 1 times [2021-12-22 14:30:13,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:13,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55299240] [2021-12-22 14:30:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:13,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:13,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:30:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:13,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:13,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:13,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55299240] [2021-12-22 14:30:13,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55299240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:13,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:13,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:30:13,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119183609] [2021-12-22 14:30:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:13,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:30:13,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:13,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:30:13,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:30:13,940 INFO L87 Difference]: Start difference. First operand has 499 states, 395 states have (on average 1.4329113924050634) internal successors, (566), 404 states have internal predecessors, (566), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 14:30:14,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:14,323 INFO L93 Difference]: Finished difference Result 1407 states and 2087 transitions. [2021-12-22 14:30:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:30:14,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-22 14:30:14,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:14,343 INFO L225 Difference]: With dead ends: 1407 [2021-12-22 14:30:14,344 INFO L226 Difference]: Without dead ends: 907 [2021-12-22 14:30:14,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:30:14,356 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 682 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:14,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1642 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 14:30:14,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-12-22 14:30:14,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 903. [2021-12-22 14:30:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 714 states have (on average 1.4341736694677871) internal successors, (1024), 724 states have internal predecessors, (1024), 143 states have call successors, (143), 46 states have call predecessors, (143), 45 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2021-12-22 14:30:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1305 transitions. [2021-12-22 14:30:14,456 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1305 transitions. Word has length 21 [2021-12-22 14:30:14,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:14,456 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1305 transitions. [2021-12-22 14:30:14,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 14:30:14,457 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1305 transitions. [2021-12-22 14:30:14,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 14:30:14,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:14,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:14,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:30:14,466 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:14,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:14,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1341252181, now seen corresponding path program 1 times [2021-12-22 14:30:14,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:14,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829247559] [2021-12-22 14:30:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:14,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:14,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:14,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:14,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:14,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829247559] [2021-12-22 14:30:14,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829247559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:14,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:14,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:14,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904518752] [2021-12-22 14:30:14,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:14,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:14,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:14,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:14,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:14,948 INFO L87 Difference]: Start difference. First operand 903 states and 1305 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:16,070 INFO L93 Difference]: Finished difference Result 2674 states and 3857 transitions. [2021-12-22 14:30:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:16,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2021-12-22 14:30:16,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:16,086 INFO L225 Difference]: With dead ends: 2674 [2021-12-22 14:30:16,086 INFO L226 Difference]: Without dead ends: 1774 [2021-12-22 14:30:16,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:16,094 INFO L933 BasicCegarLoop]: 936 mSDtfsCounter, 731 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:16,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 1828 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 14:30:16,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2021-12-22 14:30:16,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1577. [2021-12-22 14:30:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1235 states have (on average 1.4008097165991902) internal successors, (1730), 1251 states have internal predecessors, (1730), 256 states have call successors, (256), 86 states have call predecessors, (256), 85 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) [2021-12-22 14:30:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2237 transitions. [2021-12-22 14:30:16,157 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2237 transitions. Word has length 28 [2021-12-22 14:30:16,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:16,157 INFO L470 AbstractCegarLoop]: Abstraction has 1577 states and 2237 transitions. [2021-12-22 14:30:16,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:16,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2237 transitions. [2021-12-22 14:30:16,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 14:30:16,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:16,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:16,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:30:16,159 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:16,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:16,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1231327051, now seen corresponding path program 1 times [2021-12-22 14:30:16,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:16,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530416607] [2021-12-22 14:30:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:16,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:16,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:16,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:16,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:16,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530416607] [2021-12-22 14:30:16,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530416607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:16,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:16,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:30:16,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458354772] [2021-12-22 14:30:16,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:16,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:30:16,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:16,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:30:16,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:30:16,649 INFO L87 Difference]: Start difference. First operand 1577 states and 2237 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:18,549 INFO L93 Difference]: Finished difference Result 5284 states and 7954 transitions. [2021-12-22 14:30:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:30:18,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-12-22 14:30:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:18,566 INFO L225 Difference]: With dead ends: 5284 [2021-12-22 14:30:18,566 INFO L226 Difference]: Without dead ends: 3710 [2021-12-22 14:30:18,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:30:18,574 INFO L933 BasicCegarLoop]: 1430 mSDtfsCounter, 1648 mSDsluCounter, 5026 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 6456 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:18,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1715 Valid, 6456 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 14:30:18,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2021-12-22 14:30:18,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 1599. [2021-12-22 14:30:18,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1253 states have (on average 1.3998403830806065) internal successors, (1754), 1269 states have internal predecessors, (1754), 260 states have call successors, (260), 86 states have call predecessors, (260), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2021-12-22 14:30:18,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2269 transitions. [2021-12-22 14:30:18,652 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2269 transitions. Word has length 33 [2021-12-22 14:30:18,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:18,652 INFO L470 AbstractCegarLoop]: Abstraction has 1599 states and 2269 transitions. [2021-12-22 14:30:18,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:18,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2269 transitions. [2021-12-22 14:30:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 14:30:18,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:18,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:18,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:30:18,654 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:18,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash -574111283, now seen corresponding path program 1 times [2021-12-22 14:30:18,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:18,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372651513] [2021-12-22 14:30:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:18,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:19,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:19,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:19,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:19,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372651513] [2021-12-22 14:30:19,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372651513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:19,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:19,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:19,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947677216] [2021-12-22 14:30:19,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:19,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:19,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:19,018 INFO L87 Difference]: Start difference. First operand 1599 states and 2269 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:19,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:19,557 INFO L93 Difference]: Finished difference Result 1779 states and 2570 transitions. [2021-12-22 14:30:19,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:30:19,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-12-22 14:30:19,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:19,570 INFO L225 Difference]: With dead ends: 1779 [2021-12-22 14:30:19,570 INFO L226 Difference]: Without dead ends: 1776 [2021-12-22 14:30:19,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:19,578 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 818 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:19,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 1101 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 14:30:19,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2021-12-22 14:30:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1598. [2021-12-22 14:30:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1253 states have (on average 1.3990422984836393) internal successors, (1753), 1268 states have internal predecessors, (1753), 259 states have call successors, (259), 86 states have call predecessors, (259), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2021-12-22 14:30:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2267 transitions. [2021-12-22 14:30:19,630 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2267 transitions. Word has length 33 [2021-12-22 14:30:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:19,631 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 2267 transitions. [2021-12-22 14:30:19,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:19,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2267 transitions. [2021-12-22 14:30:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 14:30:19,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:19,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:19,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:30:19,633 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:19,634 INFO L85 PathProgramCache]: Analyzing trace with hash -617764655, now seen corresponding path program 1 times [2021-12-22 14:30:19,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:19,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068852765] [2021-12-22 14:30:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:19,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:20,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:20,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:20,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:20,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068852765] [2021-12-22 14:30:20,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068852765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:20,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:20,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:20,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288925099] [2021-12-22 14:30:20,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:20,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:20,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:20,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:20,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:20,029 INFO L87 Difference]: Start difference. First operand 1598 states and 2267 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:20,555 INFO L93 Difference]: Finished difference Result 1778 states and 2568 transitions. [2021-12-22 14:30:20,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:30:20,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-12-22 14:30:20,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:20,563 INFO L225 Difference]: With dead ends: 1778 [2021-12-22 14:30:20,563 INFO L226 Difference]: Without dead ends: 1775 [2021-12-22 14:30:20,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:20,565 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 815 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:20,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 1098 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 14:30:20,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2021-12-22 14:30:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1597. [2021-12-22 14:30:20,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1253 states have (on average 1.398244213886672) internal successors, (1752), 1267 states have internal predecessors, (1752), 258 states have call successors, (258), 86 states have call predecessors, (258), 85 states have return successors, (255), 255 states have call predecessors, (255), 255 states have call successors, (255) [2021-12-22 14:30:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2265 transitions. [2021-12-22 14:30:20,647 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2265 transitions. Word has length 34 [2021-12-22 14:30:20,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:20,648 INFO L470 AbstractCegarLoop]: Abstraction has 1597 states and 2265 transitions. [2021-12-22 14:30:20,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:20,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2265 transitions. [2021-12-22 14:30:20,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-22 14:30:20,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:20,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:20,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:30:20,650 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:20,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:20,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1971014320, now seen corresponding path program 1 times [2021-12-22 14:30:20,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:20,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160619397] [2021-12-22 14:30:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:20,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:30:21,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:21,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160619397] [2021-12-22 14:30:21,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160619397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:21,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:21,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:21,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34709467] [2021-12-22 14:30:21,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:21,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:21,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:21,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:21,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:21,002 INFO L87 Difference]: Start difference. First operand 1597 states and 2265 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:21,797 INFO L93 Difference]: Finished difference Result 4611 states and 6639 transitions. [2021-12-22 14:30:21,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:21,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2021-12-22 14:30:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:21,810 INFO L225 Difference]: With dead ends: 4611 [2021-12-22 14:30:21,810 INFO L226 Difference]: Without dead ends: 3005 [2021-12-22 14:30:21,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:30:21,816 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 896 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:21,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [955 Valid, 1605 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 14:30:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2021-12-22 14:30:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2778. [2021-12-22 14:30:21,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2185 states have (on average 1.3977116704805492) internal successors, (3054), 2222 states have internal predecessors, (3054), 455 states have call successors, (455), 151 states have call predecessors, (455), 137 states have return successors, (445), 428 states have call predecessors, (445), 445 states have call successors, (445) [2021-12-22 14:30:21,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3954 transitions. [2021-12-22 14:30:21,934 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3954 transitions. Word has length 35 [2021-12-22 14:30:21,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:21,935 INFO L470 AbstractCegarLoop]: Abstraction has 2778 states and 3954 transitions. [2021-12-22 14:30:21,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:30:21,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3954 transitions. [2021-12-22 14:30:21,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-22 14:30:21,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:21,938 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:21,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:30:21,938 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:21,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:21,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2101219672, now seen corresponding path program 1 times [2021-12-22 14:30:21,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:21,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242570965] [2021-12-22 14:30:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:21,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:22,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 14:30:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:30:22,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:22,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242570965] [2021-12-22 14:30:22,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242570965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:22,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:22,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:22,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534011508] [2021-12-22 14:30:22,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:22,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:22,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:22,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:22,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:22,338 INFO L87 Difference]: Start difference. First operand 2778 states and 3954 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 14:30:23,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:23,308 INFO L93 Difference]: Finished difference Result 7242 states and 10447 transitions. [2021-12-22 14:30:23,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:23,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2021-12-22 14:30:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:23,343 INFO L225 Difference]: With dead ends: 7242 [2021-12-22 14:30:23,344 INFO L226 Difference]: Without dead ends: 4467 [2021-12-22 14:30:23,352 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 [2021-12-22 14:30:23,353 INFO L933 BasicCegarLoop]: 978 mSDtfsCounter, 846 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:23,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 1976 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 14:30:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2021-12-22 14:30:23,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4138. [2021-12-22 14:30:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 3275 states have (on average 1.3880916030534352) internal successors, (4546), 3324 states have internal predecessors, (4546), 659 states have call successors, (659), 221 states have call predecessors, (659), 203 states have return successors, (649), 628 states have call predecessors, (649), 649 states have call successors, (649) [2021-12-22 14:30:23,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 5854 transitions. [2021-12-22 14:30:23,470 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 5854 transitions. Word has length 55 [2021-12-22 14:30:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:23,471 INFO L470 AbstractCegarLoop]: Abstraction has 4138 states and 5854 transitions. [2021-12-22 14:30:23,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 14:30:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 5854 transitions. [2021-12-22 14:30:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-22 14:30:23,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:23,473 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:23,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:30:23,474 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:23,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:23,474 INFO L85 PathProgramCache]: Analyzing trace with hash 196374771, now seen corresponding path program 1 times [2021-12-22 14:30:23,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:23,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324978746] [2021-12-22 14:30:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:23,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:23,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:23,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 14:30:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:23,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-22 14:30:23,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:23,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324978746] [2021-12-22 14:30:23,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324978746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:23,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:23,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:30:23,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470238568] [2021-12-22 14:30:23,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:23,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:23,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:23,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:23,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:30:23,838 INFO L87 Difference]: Start difference. First operand 4138 states and 5854 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 14:30:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:24,891 INFO L93 Difference]: Finished difference Result 10056 states and 14407 transitions. [2021-12-22 14:30:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:30:24,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2021-12-22 14:30:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:24,915 INFO L225 Difference]: With dead ends: 10056 [2021-12-22 14:30:24,916 INFO L226 Difference]: Without dead ends: 5921 [2021-12-22 14:30:24,927 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 [2021-12-22 14:30:24,928 INFO L933 BasicCegarLoop]: 1229 mSDtfsCounter, 794 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:24,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 2357 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 14:30:24,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5921 states. [2021-12-22 14:30:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5921 to 5498. [2021-12-22 14:30:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5498 states, 4365 states have (on average 1.3832760595647193) internal successors, (6038), 4426 states have internal predecessors, (6038), 863 states have call successors, (863), 291 states have call predecessors, (863), 269 states have return successors, (853), 828 states have call predecessors, (853), 853 states have call successors, (853) [2021-12-22 14:30:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5498 states to 5498 states and 7754 transitions. [2021-12-22 14:30:25,170 INFO L78 Accepts]: Start accepts. Automaton has 5498 states and 7754 transitions. Word has length 75 [2021-12-22 14:30:25,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:25,171 INFO L470 AbstractCegarLoop]: Abstraction has 5498 states and 7754 transitions. [2021-12-22 14:30:25,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 14:30:25,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5498 states and 7754 transitions. [2021-12-22 14:30:25,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-22 14:30:25,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:25,174 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:25,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 14:30:25,175 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:25,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:25,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1785936298, now seen corresponding path program 1 times [2021-12-22 14:30:25,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:25,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613370093] [2021-12-22 14:30:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:25,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:25,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:30:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:25,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 14:30:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:25,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 14:30:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:30:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:25,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:30:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:25,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:25,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:30:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:25,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:25,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:30:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:25,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 14:30:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-22 14:30:25,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:25,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613370093] [2021-12-22 14:30:25,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613370093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:25,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:25,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:30:25,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149963068] [2021-12-22 14:30:25,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:25,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:30:25,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:25,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:30:25,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:30:25,563 INFO L87 Difference]: Start difference. First operand 5498 states and 7754 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:30:28,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:30:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:29,074 INFO L93 Difference]: Finished difference Result 13582 states and 19486 transitions. [2021-12-22 14:30:29,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 14:30:29,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2021-12-22 14:30:29,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:29,104 INFO L225 Difference]: With dead ends: 13582 [2021-12-22 14:30:29,105 INFO L226 Difference]: Without dead ends: 8087 [2021-12-22 14:30:29,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:30:29,122 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1066 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 551 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:29,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 2376 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 645 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-12-22 14:30:29,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8087 states. [2021-12-22 14:30:29,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8087 to 7208. [2021-12-22 14:30:29,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7208 states, 5881 states have (on average 1.4057133140622342) internal successors, (8267), 5952 states have internal predecessors, (8267), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2021-12-22 14:30:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 10229 transitions. [2021-12-22 14:30:29,346 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 10229 transitions. Word has length 92 [2021-12-22 14:30:29,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:29,346 INFO L470 AbstractCegarLoop]: Abstraction has 7208 states and 10229 transitions. [2021-12-22 14:30:29,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:30:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 10229 transitions. [2021-12-22 14:30:29,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-22 14:30:29,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:29,355 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:29,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 14:30:29,356 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:29,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:29,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2081938916, now seen corresponding path program 1 times [2021-12-22 14:30:29,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:29,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677791282] [2021-12-22 14:30:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:29,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:29,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:29,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:29,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 14:30:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:29,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:29,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:29,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:30:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:29,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:30:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-22 14:30:29,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:29,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677791282] [2021-12-22 14:30:29,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677791282] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:30:29,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526558374] [2021-12-22 14:30:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:29,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:30:29,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:30:29,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:30:29,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 14:30:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:31,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 12129 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 14:30:31,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:30:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-22 14:30:31,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:30:31,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526558374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:31,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:30:31,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-12-22 14:30:31,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611747317] [2021-12-22 14:30:31,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:31,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:30:31,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:31,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:30:31,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 14:30:31,523 INFO L87 Difference]: Start difference. First operand 7208 states and 10229 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 14:30:32,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:32,610 INFO L93 Difference]: Finished difference Result 18050 states and 26050 transitions. [2021-12-22 14:30:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:30:32,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 107 [2021-12-22 14:30:32,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:32,638 INFO L225 Difference]: With dead ends: 18050 [2021-12-22 14:30:32,638 INFO L226 Difference]: Without dead ends: 10805 [2021-12-22 14:30:32,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-12-22 14:30:32,656 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 717 mSDsluCounter, 5279 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:32,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 6254 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 14:30:32,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2021-12-22 14:30:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 7213. [2021-12-22 14:30:32,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7213 states, 5886 states have (on average 1.401291199456337) internal successors, (8248), 5957 states have internal predecessors, (8248), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2021-12-22 14:30:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7213 states to 7213 states and 10210 transitions. [2021-12-22 14:30:32,969 INFO L78 Accepts]: Start accepts. Automaton has 7213 states and 10210 transitions. Word has length 107 [2021-12-22 14:30:32,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:32,969 INFO L470 AbstractCegarLoop]: Abstraction has 7213 states and 10210 transitions. [2021-12-22 14:30:32,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 14:30:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 7213 states and 10210 transitions. [2021-12-22 14:30:32,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-22 14:30:32,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:32,975 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:33,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 14:30:33,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-22 14:30:33,200 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:33,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1609003934, now seen corresponding path program 1 times [2021-12-22 14:30:33,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:33,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038671146] [2021-12-22 14:30:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:33,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 14:30:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:30:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:30:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 14:30:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-22 14:30:33,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:33,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038671146] [2021-12-22 14:30:33,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038671146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:33,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:33,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:30:33,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815917517] [2021-12-22 14:30:33,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:33,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:30:33,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:33,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:30:33,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:30:33,669 INFO L87 Difference]: Start difference. First operand 7213 states and 10210 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-22 14:30:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:35,593 INFO L93 Difference]: Finished difference Result 23671 states and 35308 transitions. [2021-12-22 14:30:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:30:35,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 133 [2021-12-22 14:30:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:35,652 INFO L225 Difference]: With dead ends: 23671 [2021-12-22 14:30:35,653 INFO L226 Difference]: Without dead ends: 16461 [2021-12-22 14:30:35,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:30:35,682 INFO L933 BasicCegarLoop]: 1090 mSDtfsCounter, 1418 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:35,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 3922 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 14:30:35,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16461 states. [2021-12-22 14:30:36,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16461 to 7189. [2021-12-22 14:30:36,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7189 states, 5862 states have (on average 1.3974752644148756) internal successors, (8192), 5933 states have internal predecessors, (8192), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2021-12-22 14:30:36,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 10154 transitions. [2021-12-22 14:30:36,104 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 10154 transitions. Word has length 133 [2021-12-22 14:30:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:36,106 INFO L470 AbstractCegarLoop]: Abstraction has 7189 states and 10154 transitions. [2021-12-22 14:30:36,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-22 14:30:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 10154 transitions. [2021-12-22 14:30:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 14:30:36,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:36,111 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:36,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 14:30:36,112 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1603001176, now seen corresponding path program 1 times [2021-12-22 14:30:36,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:36,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183970486] [2021-12-22 14:30:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:36,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 14:30:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 14:30:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 14:30:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:30:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 14:30:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-22 14:30:36,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:36,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183970486] [2021-12-22 14:30:36,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183970486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:36,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:36,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:30:36,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944314104] [2021-12-22 14:30:36,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:36,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:30:36,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:36,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:30:36,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:30:36,565 INFO L87 Difference]: Start difference. First operand 7189 states and 10154 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:30:38,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:38,750 INFO L93 Difference]: Finished difference Result 24324 states and 36225 transitions. [2021-12-22 14:30:38,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:30:38,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 135 [2021-12-22 14:30:38,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:38,796 INFO L225 Difference]: With dead ends: 24324 [2021-12-22 14:30:38,796 INFO L226 Difference]: Without dead ends: 17138 [2021-12-22 14:30:38,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:30:38,816 INFO L933 BasicCegarLoop]: 1717 mSDtfsCounter, 832 mSDsluCounter, 5587 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 7304 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:38,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 7304 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 14:30:38,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17138 states. [2021-12-22 14:30:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17138 to 7205. [2021-12-22 14:30:39,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7205 states, 5878 states have (on average 1.396393331064988) internal successors, (8208), 5949 states have internal predecessors, (8208), 989 states have call successors, (989), 365 states have call predecessors, (989), 337 states have return successors, (973), 938 states have call predecessors, (973), 973 states have call successors, (973) [2021-12-22 14:30:39,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7205 states to 7205 states and 10170 transitions. [2021-12-22 14:30:39,274 INFO L78 Accepts]: Start accepts. Automaton has 7205 states and 10170 transitions. Word has length 135 [2021-12-22 14:30:39,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:39,274 INFO L470 AbstractCegarLoop]: Abstraction has 7205 states and 10170 transitions. [2021-12-22 14:30:39,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:30:39,275 INFO L276 IsEmpty]: Start isEmpty. Operand 7205 states and 10170 transitions. [2021-12-22 14:30:39,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 14:30:39,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:39,280 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:39,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 14:30:39,281 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:39,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:39,281 INFO L85 PathProgramCache]: Analyzing trace with hash 241907216, now seen corresponding path program 1 times [2021-12-22 14:30:39,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:39,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300258666] [2021-12-22 14:30:39,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:39,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 14:30:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 14:30:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 14:30:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:30:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 14:30:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 14:30:39,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:39,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300258666] [2021-12-22 14:30:39,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300258666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:39,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:39,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:30:39,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71649123] [2021-12-22 14:30:39,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:39,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:30:39,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:39,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:30:39,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:30:39,723 INFO L87 Difference]: Start difference. First operand 7205 states and 10170 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:30:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:41,328 INFO L93 Difference]: Finished difference Result 16785 states and 23996 transitions. [2021-12-22 14:30:41,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:30:41,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 145 [2021-12-22 14:30:41,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:41,360 INFO L225 Difference]: With dead ends: 16785 [2021-12-22 14:30:41,360 INFO L226 Difference]: Without dead ends: 9583 [2021-12-22 14:30:41,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:30:41,372 INFO L933 BasicCegarLoop]: 1272 mSDtfsCounter, 1059 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:41,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 3087 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 14:30:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2021-12-22 14:30:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 8951. [2021-12-22 14:30:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8951 states, 7326 states have (on average 1.3928473928473928) internal successors, (10204), 7409 states have internal predecessors, (10204), 1211 states have call successors, (1211), 445 states have call predecessors, (1211), 413 states have return successors, (1195), 1156 states have call predecessors, (1195), 1195 states have call successors, (1195) [2021-12-22 14:30:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 12610 transitions. [2021-12-22 14:30:41,692 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 12610 transitions. Word has length 145 [2021-12-22 14:30:41,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:41,692 INFO L470 AbstractCegarLoop]: Abstraction has 8951 states and 12610 transitions. [2021-12-22 14:30:41,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:30:41,692 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 12610 transitions. [2021-12-22 14:30:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-22 14:30:41,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:41,697 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:41,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 14:30:41,698 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:41,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:41,698 INFO L85 PathProgramCache]: Analyzing trace with hash -811262813, now seen corresponding path program 1 times [2021-12-22 14:30:41,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:41,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078608326] [2021-12-22 14:30:41,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:41,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 14:30:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 14:30:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 14:30:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:30:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 14:30:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-22 14:30:42,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:42,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078608326] [2021-12-22 14:30:42,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078608326] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:30:42,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127059036] [2021-12-22 14:30:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:42,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:30:42,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:30:42,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:30:42,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 14:30:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:43,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 12250 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 14:30:43,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:30:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 14:30:43,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:30:43,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127059036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:43,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:30:43,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2021-12-22 14:30:43,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796782804] [2021-12-22 14:30:43,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:43,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:30:43,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:43,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:30:43,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:30:43,847 INFO L87 Difference]: Start difference. First operand 8951 states and 12610 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-22 14:30:44,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:44,977 INFO L93 Difference]: Finished difference Result 26846 states and 37822 transitions. [2021-12-22 14:30:44,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:30:44,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 140 [2021-12-22 14:30:44,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:45,043 INFO L225 Difference]: With dead ends: 26846 [2021-12-22 14:30:45,043 INFO L226 Difference]: Without dead ends: 26831 [2021-12-22 14:30:45,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:30:45,056 INFO L933 BasicCegarLoop]: 1343 mSDtfsCounter, 1299 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:45,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1299 Valid, 2759 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 14:30:45,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26831 states. [2021-12-22 14:30:46,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26831 to 26703. [2021-12-22 14:30:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26703 states, 21860 states have (on average 1.3944190301921318) internal successors, (30482), 22101 states have internal predecessors, (30482), 3611 states have call successors, (3611), 1321 states have call predecessors, (3611), 1231 states have return successors, (3577), 3460 states have call predecessors, (3577), 3577 states have call successors, (3577) [2021-12-22 14:30:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26703 states to 26703 states and 37670 transitions. [2021-12-22 14:30:46,184 INFO L78 Accepts]: Start accepts. Automaton has 26703 states and 37670 transitions. Word has length 140 [2021-12-22 14:30:46,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:46,185 INFO L470 AbstractCegarLoop]: Abstraction has 26703 states and 37670 transitions. [2021-12-22 14:30:46,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-22 14:30:46,185 INFO L276 IsEmpty]: Start isEmpty. Operand 26703 states and 37670 transitions. [2021-12-22 14:30:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-22 14:30:46,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:46,194 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:46,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 14:30:46,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-22 14:30:46,400 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:46,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:46,400 INFO L85 PathProgramCache]: Analyzing trace with hash 524127038, now seen corresponding path program 1 times [2021-12-22 14:30:46,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:46,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185056740] [2021-12-22 14:30:46,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:46,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 14:30:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 14:30:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 14:30:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:30:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 14:30:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-22 14:30:46,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:46,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185056740] [2021-12-22 14:30:46,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185056740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:46,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:46,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:30:46,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812666809] [2021-12-22 14:30:46,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:46,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:30:46,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:46,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:30:46,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:30:46,785 INFO L87 Difference]: Start difference. First operand 26703 states and 37670 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:30:49,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:49,271 INFO L93 Difference]: Finished difference Result 60783 states and 86776 transitions. [2021-12-22 14:30:49,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:30:49,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 146 [2021-12-22 14:30:49,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:49,357 INFO L225 Difference]: With dead ends: 60783 [2021-12-22 14:30:49,357 INFO L226 Difference]: Without dead ends: 34083 [2021-12-22 14:30:49,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:30:49,406 INFO L933 BasicCegarLoop]: 1288 mSDtfsCounter, 717 mSDsluCounter, 2538 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 3826 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:49,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 3826 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 14:30:49,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34083 states. [2021-12-22 14:30:50,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34083 to 31933. [2021-12-22 14:30:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31933 states, 26196 states have (on average 1.3918155443579172) internal successors, (36460), 26473 states have internal predecessors, (36460), 4277 states have call successors, (4277), 1561 states have call predecessors, (4277), 1459 states have return successors, (4243), 4114 states have call predecessors, (4243), 4243 states have call successors, (4243) [2021-12-22 14:30:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31933 states to 31933 states and 44980 transitions. [2021-12-22 14:30:50,649 INFO L78 Accepts]: Start accepts. Automaton has 31933 states and 44980 transitions. Word has length 146 [2021-12-22 14:30:50,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:50,650 INFO L470 AbstractCegarLoop]: Abstraction has 31933 states and 44980 transitions. [2021-12-22 14:30:50,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:30:50,650 INFO L276 IsEmpty]: Start isEmpty. Operand 31933 states and 44980 transitions. [2021-12-22 14:30:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-22 14:30:50,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:50,659 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:50,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 14:30:50,660 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:50,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:50,660 INFO L85 PathProgramCache]: Analyzing trace with hash -778138531, now seen corresponding path program 1 times [2021-12-22 14:30:50,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:50,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795849792] [2021-12-22 14:30:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:50,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 14:30:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 14:30:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:30:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:30:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 14:30:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 14:30:51,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:51,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795849792] [2021-12-22 14:30:51,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795849792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:51,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:51,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:30:51,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208556600] [2021-12-22 14:30:51,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:51,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:30:51,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:30:51,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:30:51,319 INFO L87 Difference]: Start difference. First operand 31933 states and 44980 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:30:53,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:30:53,775 INFO L93 Difference]: Finished difference Result 71555 states and 101924 transitions. [2021-12-22 14:30:53,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:30:53,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 147 [2021-12-22 14:30:53,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:30:53,876 INFO L225 Difference]: With dead ends: 71555 [2021-12-22 14:30:53,876 INFO L226 Difference]: Without dead ends: 39625 [2021-12-22 14:30:53,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:30:53,931 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 885 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:30:53,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [957 Valid, 3136 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 14:30:53,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39625 states. [2021-12-22 14:30:55,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39625 to 37163. [2021-12-22 14:30:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37163 states, 30532 states have (on average 1.3899515262675226) internal successors, (42438), 30845 states have internal predecessors, (42438), 4943 states have call successors, (4943), 1801 states have call predecessors, (4943), 1687 states have return successors, (4909), 4768 states have call predecessors, (4909), 4909 states have call successors, (4909) [2021-12-22 14:30:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37163 states to 37163 states and 52290 transitions. [2021-12-22 14:30:55,452 INFO L78 Accepts]: Start accepts. Automaton has 37163 states and 52290 transitions. Word has length 147 [2021-12-22 14:30:55,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:30:55,452 INFO L470 AbstractCegarLoop]: Abstraction has 37163 states and 52290 transitions. [2021-12-22 14:30:55,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:30:55,452 INFO L276 IsEmpty]: Start isEmpty. Operand 37163 states and 52290 transitions. [2021-12-22 14:30:55,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-22 14:30:55,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:30:55,461 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:30:55,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 14:30:55,461 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:30:55,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:30:55,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1197811468, now seen corresponding path program 1 times [2021-12-22 14:30:55,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:30:55,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772714301] [2021-12-22 14:30:55,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:30:55,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:30:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 14:30:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 14:30:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:30:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:30:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 14:30:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:30:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:30:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 14:30:55,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:30:55,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772714301] [2021-12-22 14:30:55,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772714301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:30:55,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:30:55,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:30:55,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943978145] [2021-12-22 14:30:55,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:30:55,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:30:55,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:30:55,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:30:55,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:30:55,998 INFO L87 Difference]: Start difference. First operand 37163 states and 52290 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)