./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.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 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:07:29,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:07:29,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:07:29,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:07:29,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:07:29,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:07:29,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:07:29,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:07:29,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:07:29,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:07:29,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:07:29,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:07:29,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:07:29,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:07:29,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:07:29,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:07:29,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:07:29,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:07:29,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:07:29,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:07:29,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:07:29,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:07:29,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:07:29,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:07:29,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:07:29,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:07:29,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:07:29,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:07:29,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:07:29,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:07:29,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:07:29,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:07:29,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:07:29,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:07:29,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:07:29,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:07:29,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:07:29,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:07:29,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:07:29,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:07:29,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:07:29,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:07:29,217 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:07:29,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:07:29,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:07:29,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:07:29,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:07:29,219 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:07:29,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:07:29,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:07:29,221 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:07:29,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:07:29,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:07:29,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:07:29,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:07:29,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:07:29,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:07:29,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:07:29,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:07:29,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:07:29,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:07:29,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:07:29,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:07:29,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:07:29,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:07:29,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:07:29,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:07:29,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:07:29,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:07:29,224 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:07:29,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:07:29,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:07:29,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc [2021-12-28 04:07:29,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:07:29,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:07:29,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:07:29,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:07:29,515 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:07:29,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-28 04:07:29,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ed23e1f/bc3f2b07263a4bb18f5357ab8c7a8dd2/FLAG1fa5d9462 [2021-12-28 04:07:30,165 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:07:30,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-28 04:07:30,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ed23e1f/bc3f2b07263a4bb18f5357ab8c7a8dd2/FLAG1fa5d9462 [2021-12-28 04:07:30,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ed23e1f/bc3f2b07263a4bb18f5357ab8c7a8dd2 [2021-12-28 04:07:30,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:07:30,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:07:30,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:07:30,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:07:30,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:07:30,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:07:30" (1/1) ... [2021-12-28 04:07:30,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebc0c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:30, skipping insertion in model container [2021-12-28 04:07:30,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:07:30" (1/1) ... [2021-12-28 04:07:30,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:07:30,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:07:31,159 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-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2021-12-28 04:07:31,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:07:31,242 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:07:31,416 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-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2021-12-28 04:07:31,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:07:31,496 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:07:31,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:31 WrapperNode [2021-12-28 04:07:31,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:07:31,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:07:31,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:07:31,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:07:31,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:31" (1/1) ... [2021-12-28 04:07:31,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:31" (1/1) ... [2021-12-28 04:07:31,641 INFO L137 Inliner]: procedures = 153, calls = 606, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 1831 [2021-12-28 04:07:31,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:07:31,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:07:31,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:07:31,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:07:31,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:31" (1/1) ... [2021-12-28 04:07:31,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:31" (1/1) ... [2021-12-28 04:07:31,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:31" (1/1) ... [2021-12-28 04:07:31,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:31" (1/1) ... [2021-12-28 04:07:31,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:31" (1/1) ... [2021-12-28 04:07:31,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:31" (1/1) ... [2021-12-28 04:07:31,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:31" (1/1) ... [2021-12-28 04:07:31,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:07:31,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:07:31,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:07:31,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:07:31,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:31" (1/1) ... [2021-12-28 04:07:31,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:07:31,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:07:31,762 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) [2021-12-28 04:07:31,763 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 [2021-12-28 04:07:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_11 [2021-12-28 04:07:31,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_11 [2021-12-28 04:07:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-28 04:07:31,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-28 04:07:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_ioctl [2021-12-28 04:07:31,788 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_ioctl [2021-12-28 04:07:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 04:07:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2021-12-28 04:07:31,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2021-12-28 04:07:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-12-28 04:07:31,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-12-28 04:07:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_close [2021-12-28 04:07:31,789 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_close [2021-12-28 04:07:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 04:07:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 04:07:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:07:31,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:07:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:07:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:07:31,790 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:07:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-28 04:07:31,790 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-28 04:07:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-28 04:07:31,815 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-28 04:07:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-28 04:07:31,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-28 04:07:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-12-28 04:07:31,816 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-12-28 04:07:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2021-12-28 04:07:31,816 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2021-12-28 04:07:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 04:07:31,816 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 04:07:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-28 04:07:31,817 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-28 04:07:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 04:07:31,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 04:07:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:07:31,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:07:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-28 04:07:31,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-28 04:07:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-12-28 04:07:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_disconnect [2021-12-28 04:07:31,818 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_disconnect [2021-12-28 04:07:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_set_mtu [2021-12-28 04:07:31,818 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_set_mtu [2021-12-28 04:07:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2021-12-28 04:07:31,819 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2021-12-28 04:07:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:07:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:07:31,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:07:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:07:31,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:07:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure rx_submit [2021-12-28 04:07:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_submit [2021-12-28 04:07:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:07:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:07:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:07:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:07:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-28 04:07:31,821 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-28 04:07:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:07:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-28 04:07:31,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-28 04:07:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 04:07:31,823 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 04:07:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:07:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-28 04:07:31,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-28 04:07:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:07:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:07:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 04:07:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 04:07:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 04:07:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:07:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-12-28 04:07:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-12-28 04:07:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-28 04:07:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-28 04:07:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 04:07:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 04:07:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:07:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:07:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-28 04:07:31,826 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-28 04:07:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 04:07:31,826 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 04:07:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-28 04:07:31,826 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-28 04:07:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-28 04:07:31,827 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-28 04:07:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-28 04:07:31,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-28 04:07:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:07:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 04:07:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:07:31,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:07:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2021-12-28 04:07:31,828 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2021-12-28 04:07:32,227 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:07:32,230 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:07:32,721 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:07:33,926 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:07:33,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:07:33,933 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:07:33,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:07:33 BoogieIcfgContainer [2021-12-28 04:07:33,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:07:33,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:07:33,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:07:33,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:07:33,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:07:30" (1/3) ... [2021-12-28 04:07:33,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6dfa21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:07:33, skipping insertion in model container [2021-12-28 04:07:33,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:31" (2/3) ... [2021-12-28 04:07:33,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6dfa21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:07:33, skipping insertion in model container [2021-12-28 04:07:33,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:07:33" (3/3) ... [2021-12-28 04:07:33,940 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-28 04:07:33,944 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:07:33,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:07:33,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:07:33,991 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 [2021-12-28 04:07:33,991 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:07:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 598 states, 444 states have (on average 1.3513513513513513) internal successors, (600), 463 states have internal predecessors, (600), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) [2021-12-28 04:07:34,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-28 04:07:34,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:07:34,032 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-28 04:07:34,032 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:07:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:07:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash 148447644, now seen corresponding path program 1 times [2021-12-28 04:07:34,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:07:34,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526504994] [2021-12-28 04:07:34,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:07:34,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:07:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:34,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:07:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:34,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:07:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:34,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:34,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:34,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:07:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:34,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:34,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:34,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:07:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:07:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-28 04:07:34,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:07:34,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526504994] [2021-12-28 04:07:34,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526504994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:07:34,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:07:34,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:07:34,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533935899] [2021-12-28 04:07:34,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:07:34,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:07:34,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:07:34,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:07:34,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:07:34,631 INFO L87 Difference]: Start difference. First operand has 598 states, 444 states have (on average 1.3513513513513513) internal successors, (600), 463 states have internal predecessors, (600), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:07:37,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:07:37,373 INFO L93 Difference]: Finished difference Result 1280 states and 1801 transitions. [2021-12-28 04:07:37,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:07:37,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2021-12-28 04:07:37,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:07:37,386 INFO L225 Difference]: With dead ends: 1280 [2021-12-28 04:07:37,387 INFO L226 Difference]: Without dead ends: 673 [2021-12-28 04:07:37,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:07:37,394 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 436 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-28 04:07:37,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1798 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-28 04:07:37,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-12-28 04:07:37,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 584. [2021-12-28 04:07:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 438 states have (on average 1.3333333333333333) internal successors, (584), 449 states have internal predecessors, (584), 107 states have call successors, (107), 39 states have call predecessors, (107), 38 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2021-12-28 04:07:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 793 transitions. [2021-12-28 04:07:37,453 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 793 transitions. Word has length 78 [2021-12-28 04:07:37,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:07:37,453 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 793 transitions. [2021-12-28 04:07:37,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:07:37,454 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 793 transitions. [2021-12-28 04:07:37,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-28 04:07:37,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:07:37,456 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-28 04:07:37,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:07:37,457 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:07:37,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:07:37,457 INFO L85 PathProgramCache]: Analyzing trace with hash 354669602, now seen corresponding path program 1 times [2021-12-28 04:07:37,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:07:37,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619860990] [2021-12-28 04:07:37,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:07:37,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:07:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:07:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:37,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:37,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:07:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:37,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:37,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:07:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:37,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:37,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:07:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:37,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:07:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:37,653 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-28 04:07:37,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:07:37,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619860990] [2021-12-28 04:07:37,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619860990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:07:37,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:07:37,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:07:37,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163568185] [2021-12-28 04:07:37,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:07:37,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:07:37,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:07:37,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:07:37,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:07:37,656 INFO L87 Difference]: Start difference. First operand 584 states and 793 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-28 04:07:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:07:41,292 INFO L93 Difference]: Finished difference Result 1867 states and 2577 transitions. [2021-12-28 04:07:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:07:41,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 78 [2021-12-28 04:07:41,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:07:41,299 INFO L225 Difference]: With dead ends: 1867 [2021-12-28 04:07:41,299 INFO L226 Difference]: Without dead ends: 1301 [2021-12-28 04:07:41,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:07:41,305 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 1511 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-28 04:07:41,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1595 Valid, 2408 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-28 04:07:41,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2021-12-28 04:07:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1127. [2021-12-28 04:07:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 848 states have (on average 1.3337264150943395) internal successors, (1131), 866 states have internal predecessors, (1131), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2021-12-28 04:07:41,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1532 transitions. [2021-12-28 04:07:41,375 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1532 transitions. Word has length 78 [2021-12-28 04:07:41,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:07:41,376 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1532 transitions. [2021-12-28 04:07:41,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-28 04:07:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1532 transitions. [2021-12-28 04:07:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-28 04:07:41,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:07:41,384 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-28 04:07:41,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:07:41,385 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:07:41,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:07:41,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2694347, now seen corresponding path program 1 times [2021-12-28 04:07:41,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:07:41,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077522005] [2021-12-28 04:07:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:07:41,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:07:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:07:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:07:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:07:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:07:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:07:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:07:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-28 04:07:41,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:07:41,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077522005] [2021-12-28 04:07:41,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077522005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:07:41,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:07:41,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:07:41,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753964236] [2021-12-28 04:07:41,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:07:41,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:07:41,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:07:41,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:07:41,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:07:41,623 INFO L87 Difference]: Start difference. First operand 1127 states and 1532 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-28 04:07:44,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:07:44,580 INFO L93 Difference]: Finished difference Result 1327 states and 1836 transitions. [2021-12-28 04:07:44,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 04:07:44,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 98 [2021-12-28 04:07:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:07:44,585 INFO L225 Difference]: With dead ends: 1327 [2021-12-28 04:07:44,585 INFO L226 Difference]: Without dead ends: 1314 [2021-12-28 04:07:44,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:07:44,587 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 1154 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-28 04:07:44,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 1784 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-28 04:07:44,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-12-28 04:07:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1127. [2021-12-28 04:07:44,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 848 states have (on average 1.3325471698113207) internal successors, (1130), 866 states have internal predecessors, (1130), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2021-12-28 04:07:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1531 transitions. [2021-12-28 04:07:44,627 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1531 transitions. Word has length 98 [2021-12-28 04:07:44,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:07:44,628 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1531 transitions. [2021-12-28 04:07:44,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-28 04:07:44,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1531 transitions. [2021-12-28 04:07:44,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-28 04:07:44,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:07:44,630 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-28 04:07:44,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:07:44,631 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:07:44,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:07:44,632 INFO L85 PathProgramCache]: Analyzing trace with hash 59952649, now seen corresponding path program 1 times [2021-12-28 04:07:44,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:07:44,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884357183] [2021-12-28 04:07:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:07:44,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:07:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:07:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:07:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:07:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:07:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:07:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:07:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-28 04:07:44,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:07:44,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884357183] [2021-12-28 04:07:44,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884357183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:07:44,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:07:44,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:07:44,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014354505] [2021-12-28 04:07:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:07:44,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:07:44,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:07:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:07:44,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:07:44,880 INFO L87 Difference]: Start difference. First operand 1127 states and 1531 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:07:48,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:07:48,978 INFO L93 Difference]: Finished difference Result 3688 states and 5192 transitions. [2021-12-28 04:07:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:07:48,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 98 [2021-12-28 04:07:48,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:07:48,988 INFO L225 Difference]: With dead ends: 3688 [2021-12-28 04:07:48,988 INFO L226 Difference]: Without dead ends: 2579 [2021-12-28 04:07:48,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:07:48,993 INFO L933 BasicCegarLoop]: 1082 mSDtfsCounter, 1630 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-28 04:07:48,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1703 Valid, 2561 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-28 04:07:48,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2021-12-28 04:07:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2305. [2021-12-28 04:07:49,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 1735 states have (on average 1.3302593659942363) internal successors, (2308), 1777 states have internal predecessors, (2308), 406 states have call successors, (406), 150 states have call predecessors, (406), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2021-12-28 04:07:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3177 transitions. [2021-12-28 04:07:49,069 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3177 transitions. Word has length 98 [2021-12-28 04:07:49,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:07:49,070 INFO L470 AbstractCegarLoop]: Abstraction has 2305 states and 3177 transitions. [2021-12-28 04:07:49,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:07:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3177 transitions. [2021-12-28 04:07:49,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-28 04:07:49,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:07:49,071 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-28 04:07:49,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 04:07:49,072 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:07:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:07:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1858300209, now seen corresponding path program 1 times [2021-12-28 04:07:49,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:07:49,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127704877] [2021-12-28 04:07:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:07:49,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:07:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:07:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:07:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:07:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:07:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:07:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:07:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-28 04:07:49,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:07:49,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127704877] [2021-12-28 04:07:49,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127704877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:07:49,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:07:49,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:07:49,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342742104] [2021-12-28 04:07:49,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:07:49,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:07:49,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:07:49,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:07:49,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:07:49,259 INFO L87 Difference]: Start difference. First operand 2305 states and 3177 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:07:52,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:07:52,426 INFO L93 Difference]: Finished difference Result 2571 states and 3606 transitions. [2021-12-28 04:07:52,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:07:52,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2021-12-28 04:07:52,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:07:52,436 INFO L225 Difference]: With dead ends: 2571 [2021-12-28 04:07:52,437 INFO L226 Difference]: Without dead ends: 2568 [2021-12-28 04:07:52,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:07:52,440 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 1127 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:07:52,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 1720 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-28 04:07:52,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-12-28 04:07:52,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2304. [2021-12-28 04:07:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 1735 states have (on average 1.3296829971181556) internal successors, (2307), 1776 states have internal predecessors, (2307), 405 states have call successors, (405), 150 states have call predecessors, (405), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2021-12-28 04:07:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3175 transitions. [2021-12-28 04:07:52,509 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3175 transitions. Word has length 99 [2021-12-28 04:07:52,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:07:52,510 INFO L470 AbstractCegarLoop]: Abstraction has 2304 states and 3175 transitions. [2021-12-28 04:07:52,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:07:52,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3175 transitions. [2021-12-28 04:07:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 04:07:52,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:07:52,511 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:07:52,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 04:07:52,512 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:07:52,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:07:52,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1772504588, now seen corresponding path program 1 times [2021-12-28 04:07:52,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:07:52,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595205420] [2021-12-28 04:07:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:07:52,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:07:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:07:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:07:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:07:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:07:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:07:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:07:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:52,709 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-28 04:07:52,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:07:52,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595205420] [2021-12-28 04:07:52,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595205420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:07:52,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:07:52,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:07:52,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723560048] [2021-12-28 04:07:52,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:07:52,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:07:52,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:07:52,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:07:52,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:07:52,711 INFO L87 Difference]: Start difference. First operand 2304 states and 3175 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:07:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:07:54,149 INFO L93 Difference]: Finished difference Result 2570 states and 3604 transitions. [2021-12-28 04:07:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:07:54,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2021-12-28 04:07:54,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:07:54,160 INFO L225 Difference]: With dead ends: 2570 [2021-12-28 04:07:54,161 INFO L226 Difference]: Without dead ends: 2567 [2021-12-28 04:07:54,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:07:54,162 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 1420 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 04:07:54,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1179 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 04:07:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-12-28 04:07:54,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2303. [2021-12-28 04:07:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 1735 states have (on average 1.329106628242075) internal successors, (2306), 1775 states have internal predecessors, (2306), 404 states have call successors, (404), 150 states have call predecessors, (404), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2021-12-28 04:07:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3173 transitions. [2021-12-28 04:07:54,227 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3173 transitions. Word has length 100 [2021-12-28 04:07:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:07:54,227 INFO L470 AbstractCegarLoop]: Abstraction has 2303 states and 3173 transitions. [2021-12-28 04:07:54,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:07:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3173 transitions. [2021-12-28 04:07:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 04:07:54,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:07:54,228 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-28 04:07:54,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 04:07:54,229 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:07:54,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:07:54,229 INFO L85 PathProgramCache]: Analyzing trace with hash -887154796, now seen corresponding path program 1 times [2021-12-28 04:07:54,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:07:54,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222254086] [2021-12-28 04:07:54,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:07:54,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:07:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:07:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:07:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:07:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:07:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:07:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:07:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-28 04:07:54,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:07:54,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222254086] [2021-12-28 04:07:54,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222254086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:07:54,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:07:54,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:07:54,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076586568] [2021-12-28 04:07:54,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:07:54,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:07:54,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:07:54,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:07:54,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:07:54,396 INFO L87 Difference]: Start difference. First operand 2303 states and 3173 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:07:57,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:07:57,376 INFO L93 Difference]: Finished difference Result 2569 states and 3602 transitions. [2021-12-28 04:07:57,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:07:57,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2021-12-28 04:07:57,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:07:57,386 INFO L225 Difference]: With dead ends: 2569 [2021-12-28 04:07:57,386 INFO L226 Difference]: Without dead ends: 2566 [2021-12-28 04:07:57,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:07:57,388 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 1119 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-28 04:07:57,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 1714 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-28 04:07:57,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2021-12-28 04:07:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2302. [2021-12-28 04:07:57,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1735 states have (on average 1.3285302593659942) internal successors, (2305), 1774 states have internal predecessors, (2305), 403 states have call successors, (403), 150 states have call predecessors, (403), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2021-12-28 04:07:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3171 transitions. [2021-12-28 04:07:57,459 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3171 transitions. Word has length 101 [2021-12-28 04:07:57,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:07:57,460 INFO L470 AbstractCegarLoop]: Abstraction has 2302 states and 3171 transitions. [2021-12-28 04:07:57,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:07:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3171 transitions. [2021-12-28 04:07:57,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-28 04:07:57,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:07:57,463 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-28 04:07:57,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 04:07:57,464 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:07:57,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:07:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1732212209, now seen corresponding path program 1 times [2021-12-28 04:07:57,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:07:57,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866654968] [2021-12-28 04:07:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:07:57,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:07:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:07:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:07:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:07:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:07:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:07:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:07:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-28 04:07:57,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:07:57,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866654968] [2021-12-28 04:07:57,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866654968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:07:57,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:07:57,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:07:57,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173378429] [2021-12-28 04:07:57,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:07:57,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:07:57,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:07:57,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:07:57,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:07:57,640 INFO L87 Difference]: Start difference. First operand 2302 states and 3171 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:07:59,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:07:59,202 INFO L93 Difference]: Finished difference Result 2568 states and 3600 transitions. [2021-12-28 04:07:59,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:07:59,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2021-12-28 04:07:59,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:07:59,213 INFO L225 Difference]: With dead ends: 2568 [2021-12-28 04:07:59,213 INFO L226 Difference]: Without dead ends: 2556 [2021-12-28 04:07:59,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:07:59,215 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 1412 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 04:07:59,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 1179 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 04:07:59,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-12-28 04:07:59,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2292. [2021-12-28 04:07:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 1726 states have (on average 1.3285052143684821) internal successors, (2293), 1764 states have internal predecessors, (2293), 402 states have call successors, (402), 150 states have call predecessors, (402), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2021-12-28 04:07:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3158 transitions. [2021-12-28 04:07:59,303 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3158 transitions. Word has length 102 [2021-12-28 04:07:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:07:59,303 INFO L470 AbstractCegarLoop]: Abstraction has 2292 states and 3158 transitions. [2021-12-28 04:07:59,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:07:59,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3158 transitions. [2021-12-28 04:07:59,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-28 04:07:59,308 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:07:59,308 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-28 04:07:59,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 04:07:59,309 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:07:59,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:07:59,309 INFO L85 PathProgramCache]: Analyzing trace with hash 871426742, now seen corresponding path program 1 times [2021-12-28 04:07:59,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:07:59,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969797027] [2021-12-28 04:07:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:07:59,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:07:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:07:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:07:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:07:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:07:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:07:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 04:07:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 04:07:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 04:07:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 04:07:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-28 04:07:59,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:07:59,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969797027] [2021-12-28 04:07:59,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969797027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:07:59,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:07:59,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 04:07:59,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772441394] [2021-12-28 04:07:59,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:07:59,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 04:07:59,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:07:59,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 04:07:59,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:07:59,502 INFO L87 Difference]: Start difference. First operand 2292 states and 3158 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-28 04:08:06,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:06,367 INFO L93 Difference]: Finished difference Result 7214 states and 10130 transitions. [2021-12-28 04:08:06,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 04:08:06,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 139 [2021-12-28 04:08:06,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:06,394 INFO L225 Difference]: With dead ends: 7214 [2021-12-28 04:08:06,394 INFO L226 Difference]: Without dead ends: 4940 [2021-12-28 04:08:06,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-28 04:08:06,402 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 1382 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 4041 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:06,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 4041 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-12-28 04:08:06,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2021-12-28 04:08:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 4402. [2021-12-28 04:08:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3292 states have (on average 1.3210814094775212) internal successors, (4349), 3398 states have internal predecessors, (4349), 760 states have call successors, (760), 288 states have call predecessors, (760), 349 states have return successors, (1051), 759 states have call predecessors, (1051), 759 states have call successors, (1051) [2021-12-28 04:08:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6160 transitions. [2021-12-28 04:08:06,594 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6160 transitions. Word has length 139 [2021-12-28 04:08:06,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:06,594 INFO L470 AbstractCegarLoop]: Abstraction has 4402 states and 6160 transitions. [2021-12-28 04:08:06,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-28 04:08:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6160 transitions. [2021-12-28 04:08:06,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-12-28 04:08:06,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:06,599 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:06,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 04:08:06,599 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash 507122438, now seen corresponding path program 1 times [2021-12-28 04:08:06,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:06,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549480703] [2021-12-28 04:08:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:06,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:08:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:08:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:08:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:08:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 04:08:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 04:08:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:08:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:08:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 04:08:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 04:08:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 04:08:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 04:08:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 04:08:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 04:08:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 04:08:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-28 04:08:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 04:08:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-28 04:08:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-28 04:08:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-28 04:08:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 04:08:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-28 04:08:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-28 04:08:06,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:06,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549480703] [2021-12-28 04:08:06,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549480703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:06,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:06,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 04:08:06,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005378678] [2021-12-28 04:08:06,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:06,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 04:08:06,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:06,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 04:08:06,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:08:06,900 INFO L87 Difference]: Start difference. First operand 4402 states and 6160 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-28 04:08:11,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:11,366 INFO L93 Difference]: Finished difference Result 13360 states and 18868 transitions. [2021-12-28 04:08:11,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 04:08:11,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 254 [2021-12-28 04:08:11,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:11,399 INFO L225 Difference]: With dead ends: 13360 [2021-12-28 04:08:11,399 INFO L226 Difference]: Without dead ends: 8986 [2021-12-28 04:08:11,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2021-12-28 04:08:11,411 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 2646 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 1457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 3536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1457 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:11,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2718 Valid, 2223 Invalid, 3536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1457 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-28 04:08:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8986 states. [2021-12-28 04:08:11,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8986 to 7976. [2021-12-28 04:08:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7976 states, 5976 states have (on average 1.3211178045515395) internal successors, (7895), 6172 states have internal predecessors, (7895), 1344 states have call successors, (1344), 532 states have call predecessors, (1344), 655 states have return successors, (1907), 1355 states have call predecessors, (1907), 1343 states have call successors, (1907) [2021-12-28 04:08:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7976 states to 7976 states and 11146 transitions. [2021-12-28 04:08:11,759 INFO L78 Accepts]: Start accepts. Automaton has 7976 states and 11146 transitions. Word has length 254 [2021-12-28 04:08:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:11,760 INFO L470 AbstractCegarLoop]: Abstraction has 7976 states and 11146 transitions. [2021-12-28 04:08:11,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-28 04:08:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7976 states and 11146 transitions. [2021-12-28 04:08:11,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-12-28 04:08:11,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:11,766 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:11,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 04:08:11,766 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:11,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:11,767 INFO L85 PathProgramCache]: Analyzing trace with hash 234758432, now seen corresponding path program 1 times [2021-12-28 04:08:11,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:11,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980071679] [2021-12-28 04:08:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:11,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:08:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:08:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:08:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:08:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:08:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 04:08:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 04:08:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 04:08:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 04:08:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 04:08:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 04:08:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-28 04:08:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-28 04:08:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 04:08:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-28 04:08:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:11,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-28 04:08:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:12,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-28 04:08:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:12,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-28 04:08:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:12,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:12,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-28 04:08:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:12,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-28 04:08:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:12,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-28 04:08:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:12,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 04:08:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-28 04:08:12,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:12,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980071679] [2021-12-28 04:08:12,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980071679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:12,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:12,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 04:08:12,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511186828] [2021-12-28 04:08:12,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:12,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 04:08:12,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:12,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 04:08:12,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:08:12,100 INFO L87 Difference]: Start difference. First operand 7976 states and 11146 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-28 04:08:17,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:17,145 INFO L93 Difference]: Finished difference Result 18218 states and 26137 transitions. [2021-12-28 04:08:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 04:08:17,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 263 [2021-12-28 04:08:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:17,183 INFO L225 Difference]: With dead ends: 18218 [2021-12-28 04:08:17,184 INFO L226 Difference]: Without dead ends: 10270 [2021-12-28 04:08:17,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-12-28 04:08:17,204 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 1175 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:17,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1241 Valid, 2774 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-28 04:08:17,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10270 states. [2021-12-28 04:08:17,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10270 to 8056. [2021-12-28 04:08:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8056 states, 6056 states have (on average 1.3248018494055482) internal successors, (8023), 6252 states have internal predecessors, (8023), 1344 states have call successors, (1344), 532 states have call predecessors, (1344), 655 states have return successors, (1907), 1355 states have call predecessors, (1907), 1343 states have call successors, (1907) [2021-12-28 04:08:17,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8056 states to 8056 states and 11274 transitions. [2021-12-28 04:08:17,573 INFO L78 Accepts]: Start accepts. Automaton has 8056 states and 11274 transitions. Word has length 263 [2021-12-28 04:08:17,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:17,573 INFO L470 AbstractCegarLoop]: Abstraction has 8056 states and 11274 transitions. [2021-12-28 04:08:17,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-28 04:08:17,574 INFO L276 IsEmpty]: Start isEmpty. Operand 8056 states and 11274 transitions. [2021-12-28 04:08:17,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-28 04:08:17,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:17,581 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:17,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 04:08:17,581 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:17,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1207162728, now seen corresponding path program 1 times [2021-12-28 04:08:17,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:17,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060976554] [2021-12-28 04:08:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:17,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:08:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:08:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:08:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:08:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:08:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 04:08:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 04:08:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 04:08:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 04:08:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 04:08:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-28 04:08:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 04:08:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 04:08:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-28 04:08:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-28 04:08:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-28 04:08:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-28 04:08:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-28 04:08:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-28 04:08:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-28 04:08:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-28 04:08:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 04:08:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-12-28 04:08:17,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:17,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060976554] [2021-12-28 04:08:17,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060976554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:17,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:17,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 04:08:17,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674714990] [2021-12-28 04:08:17,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:17,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 04:08:17,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:17,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 04:08:17,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-28 04:08:17,949 INFO L87 Difference]: Start difference. First operand 8056 states and 11274 transitions. Second operand has 10 states, 10 states have (on average 14.1) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-28 04:08:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:24,117 INFO L93 Difference]: Finished difference Result 27286 states and 39018 transitions. [2021-12-28 04:08:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 04:08:24,118 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 270 [2021-12-28 04:08:24,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:24,187 INFO L225 Difference]: With dead ends: 27286 [2021-12-28 04:08:24,187 INFO L226 Difference]: Without dead ends: 19258 [2021-12-28 04:08:24,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-12-28 04:08:24,215 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 3494 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 1807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3590 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 4872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1807 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:24,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3590 Valid, 2528 Invalid, 4872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1807 Valid, 3065 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-28 04:08:24,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19258 states. [2021-12-28 04:08:24,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19258 to 16040. [2021-12-28 04:08:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16040 states, 12052 states have (on average 1.3253401924991703) internal successors, (15973), 12452 states have internal predecessors, (15973), 2680 states have call successors, (2680), 1060 states have call predecessors, (2680), 1307 states have return successors, (3807), 2695 states have call predecessors, (3807), 2679 states have call successors, (3807) [2021-12-28 04:08:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16040 states to 16040 states and 22460 transitions. [2021-12-28 04:08:25,012 INFO L78 Accepts]: Start accepts. Automaton has 16040 states and 22460 transitions. Word has length 270 [2021-12-28 04:08:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:25,012 INFO L470 AbstractCegarLoop]: Abstraction has 16040 states and 22460 transitions. [2021-12-28 04:08:25,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-28 04:08:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 16040 states and 22460 transitions. [2021-12-28 04:08:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-28 04:08:25,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:25,023 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:25,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 04:08:25,023 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:25,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:25,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1701019158, now seen corresponding path program 1 times [2021-12-28 04:08:25,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:25,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882943429] [2021-12-28 04:08:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:25,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:08:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:08:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:08:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:08:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:08:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 04:08:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 04:08:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 04:08:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 04:08:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 04:08:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-28 04:08:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 04:08:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 04:08:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-28 04:08:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-28 04:08:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-28 04:08:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-28 04:08:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-28 04:08:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-28 04:08:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-28 04:08:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-28 04:08:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 04:08:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-28 04:08:25,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:25,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882943429] [2021-12-28 04:08:25,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882943429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:25,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:25,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 04:08:25,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382955979] [2021-12-28 04:08:25,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:25,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 04:08:25,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:25,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 04:08:25,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:08:25,335 INFO L87 Difference]: Start difference. First operand 16040 states and 22460 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-28 04:08:30,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:30,611 INFO L93 Difference]: Finished difference Result 35760 states and 50446 transitions. [2021-12-28 04:08:30,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 04:08:30,612 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 270 [2021-12-28 04:08:30,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:30,673 INFO L225 Difference]: With dead ends: 35760 [2021-12-28 04:08:30,674 INFO L226 Difference]: Without dead ends: 19748 [2021-12-28 04:08:30,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2021-12-28 04:08:30,704 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 1430 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:30,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1484 Valid, 2237 Invalid, 2826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-28 04:08:30,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19748 states. [2021-12-28 04:08:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19748 to 17632. [2021-12-28 04:08:31,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17632 states, 13392 states have (on average 1.3278823178016725) internal successors, (17783), 13804 states have internal predecessors, (17783), 2828 states have call successors, (2828), 1164 states have call predecessors, (2828), 1411 states have return successors, (3963), 2831 states have call predecessors, (3963), 2827 states have call successors, (3963) [2021-12-28 04:08:31,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17632 states to 17632 states and 24574 transitions. [2021-12-28 04:08:31,533 INFO L78 Accepts]: Start accepts. Automaton has 17632 states and 24574 transitions. Word has length 270 [2021-12-28 04:08:31,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:31,534 INFO L470 AbstractCegarLoop]: Abstraction has 17632 states and 24574 transitions. [2021-12-28 04:08:31,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-28 04:08:31,534 INFO L276 IsEmpty]: Start isEmpty. Operand 17632 states and 24574 transitions. [2021-12-28 04:08:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-28 04:08:31,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:31,543 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:31,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 04:08:31,543 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:31,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1669474714, now seen corresponding path program 1 times [2021-12-28 04:08:31,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:31,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776164744] [2021-12-28 04:08:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:31,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:08:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:08:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:08:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 04:08:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:08:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 04:08:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 04:08:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 04:08:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 04:08:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 04:08:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-28 04:08:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 04:08:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 04:08:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-28 04:08:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-28 04:08:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-28 04:08:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-28 04:08:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-28 04:08:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-28 04:08:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-12-28 04:08:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-28 04:08:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 04:08:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-12-28 04:08:31,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:31,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776164744] [2021-12-28 04:08:31,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776164744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:31,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:31,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 04:08:31,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790307939] [2021-12-28 04:08:31,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:31,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 04:08:31,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:31,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 04:08:31,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:08:31,801 INFO L87 Difference]: Start difference. First operand 17632 states and 24574 transitions. Second operand has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)