./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.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 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:08:21,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:08:21,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:08:21,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:08:21,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:08:21,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:08:21,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:08:21,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:08:21,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:08:21,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:08:21,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:08:21,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:08:21,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:08:21,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:08:21,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:08:21,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:08:21,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:08:21,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:08:21,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:08:21,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:08:21,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:08:21,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:08:21,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:08:21,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:08:21,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:08:21,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:08:21,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:08:21,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:08:21,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:08:21,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:08:21,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:08:21,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:08:21,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:08:21,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:08:21,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:08:21,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:08:21,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:08:21,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:08:21,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:08:21,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:08:21,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:08:21,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:08:21,239 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:08:21,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:08:21,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:08:21,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:08:21,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:08:21,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:08:21,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:08:21,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:08:21,241 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:08:21,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:08:21,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:08:21,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:08:21,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:08:21,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:08:21,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:08:21,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:08:21,243 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:08:21,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:08:21,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:08:21,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:08:21,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:08:21,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:08:21,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:08:21,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:08:21,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:08:21,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:08:21,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:08:21,245 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:08:21,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:08:21,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:08:21,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:08:21,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f [2021-12-21 16:08:21,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:08:21,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:08:21,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:08:21,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:08:21,442 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:08:21,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2021-12-21 16:08:21,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c662b6405/96cc264efa9648118dd0c3e0225e49a9/FLAGce540c768 [2021-12-21 16:08:22,056 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:08:22,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2021-12-21 16:08:22,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c662b6405/96cc264efa9648118dd0c3e0225e49a9/FLAGce540c768 [2021-12-21 16:08:22,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c662b6405/96cc264efa9648118dd0c3e0225e49a9 [2021-12-21 16:08:22,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:08:22,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:08:22,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:08:22,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:08:22,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:08:22,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:08:22" (1/1) ... [2021-12-21 16:08:22,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2909de29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:22, skipping insertion in model container [2021-12-21 16:08:22,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:08:22" (1/1) ... [2021-12-21 16:08:22,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:08:22,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:08:23,096 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2021-12-21 16:08:23,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:08:23,493 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:08:23,554 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2021-12-21 16:08:23,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:08:23,749 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:08:23,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:23 WrapperNode [2021-12-21 16:08:23,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:08:23,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:08:23,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:08:23,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:08:23,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:23" (1/1) ... [2021-12-21 16:08:23,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:23" (1/1) ... [2021-12-21 16:08:23,973 INFO L137 Inliner]: procedures = 178, calls = 1867, calls flagged for inlining = 81, calls inlined = 81, statements flattened = 3540 [2021-12-21 16:08:23,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:08:23,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:08:23,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:08:23,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:08:23,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:23" (1/1) ... [2021-12-21 16:08:23,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:23" (1/1) ... [2021-12-21 16:08:24,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:23" (1/1) ... [2021-12-21 16:08:24,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:23" (1/1) ... [2021-12-21 16:08:24,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:23" (1/1) ... [2021-12-21 16:08:24,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:23" (1/1) ... [2021-12-21 16:08:24,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:23" (1/1) ... [2021-12-21 16:08:24,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:08:24,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:08:24,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:08:24,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:08:24,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:23" (1/1) ... [2021-12-21 16:08:24,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:08:24,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:08:24,194 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) [2021-12-21 16:08:24,208 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 [2021-12-21 16:08:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-21 16:08:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-21 16:08:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:08:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2021-12-21 16:08:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2021-12-21 16:08:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-12-21 16:08:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-12-21 16:08:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-12-21 16:08:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-12-21 16:08:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2021-12-21 16:08:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2021-12-21 16:08:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:08:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:08:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-21 16:08:24,244 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-21 16:08:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:08:24,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:08:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:08:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_20 [2021-12-21 16:08:24,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_20 [2021-12-21 16:08:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-21 16:08:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-21 16:08:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 16:08:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 16:08:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 16:08:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 16:08:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:08:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:08:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-21 16:08:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-21 16:08:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-21 16:08:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-21 16:08:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-12-21 16:08:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-12-21 16:08:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:08:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:08:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_resume [2021-12-21 16:08:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_resume [2021-12-21 16:08:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure kstrdup [2021-12-21 16:08:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrdup [2021-12-21 16:08:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-12-21 16:08:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-12-21 16:08:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_reset_resume [2021-12-21 16:08:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_reset_resume [2021-12-21 16:08:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:08:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:08:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:08:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:08:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:08:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-12-21 16:08:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-12-21 16:08:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:08:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:08:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 16:08:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 16:08:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:08:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:08:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:08:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-21 16:08:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-21 16:08:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_free_buffers [2021-12-21 16:08:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_free_buffers [2021-12-21 16:08:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_disconnect [2021-12-21 16:08:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_disconnect [2021-12-21 16:08:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2021-12-21 16:08:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2021-12-21 16:08:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:08:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-21 16:08:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-21 16:08:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:08:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:08:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-21 16:08:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-21 16:08:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-12-21 16:08:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-12-21 16:08:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 16:08:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 16:08:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-21 16:08:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-21 16:08:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:08:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-21 16:08:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-21 16:08:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2021-12-21 16:08:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2021-12-21 16:08:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_16 [2021-12-21 16:08:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_16 [2021-12-21 16:08:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2021-12-21 16:08:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2021-12-21 16:08:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_probe [2021-12-21 16:08:24,265 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_probe [2021-12-21 16:08:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:08:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2021-12-21 16:08:24,265 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2021-12-21 16:08:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:08:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2021-12-21 16:08:24,266 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2021-12-21 16:08:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_open [2021-12-21 16:08:24,266 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_open [2021-12-21 16:08:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_12 [2021-12-21 16:08:24,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_12 [2021-12-21 16:08:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 16:08:24,267 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 16:08:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:08:24,268 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:08:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-21 16:08:24,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-21 16:08:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_irq [2021-12-21 16:08:24,268 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_irq [2021-12-21 16:08:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:08:24,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 16:08:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_pkt [2021-12-21 16:08:24,268 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_pkt [2021-12-21 16:08:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-21 16:08:24,269 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-21 16:08:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2021-12-21 16:08:24,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2021-12-21 16:08:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-21 16:08:24,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-21 16:08:24,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:08:24,273 INFO L130 BoogieDeclarations]: Found specification of procedure nexio_read_data [2021-12-21 16:08:24,273 INFO L138 BoogieDeclarations]: Found implementation of procedure nexio_read_data [2021-12-21 16:08:24,273 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-21 16:08:24,273 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-21 16:08:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:08:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-21 16:08:24,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-21 16:08:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:08:24,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:08:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2021-12-21 16:08:24,281 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2021-12-21 16:08:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_multi [2021-12-21 16:08:24,281 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_multi [2021-12-21 16:08:24,716 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:08:24,718 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:08:24,871 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:08:26,504 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-21 16:08:27,085 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:08:27,100 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:08:27,100 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:08:27,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:08:27 BoogieIcfgContainer [2021-12-21 16:08:27,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:08:27,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:08:27,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:08:27,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:08:27,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:08:22" (1/3) ... [2021-12-21 16:08:27,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4723774d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:08:27, skipping insertion in model container [2021-12-21 16:08:27,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:08:23" (2/3) ... [2021-12-21 16:08:27,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4723774d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:08:27, skipping insertion in model container [2021-12-21 16:08:27,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:08:27" (3/3) ... [2021-12-21 16:08:27,108 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2021-12-21 16:08:27,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:08:27,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:08:27,158 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:08:27,164 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 [2021-12-21 16:08:27,164 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:08:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 959 states, 694 states have (on average 1.3530259365994237) internal successors, (939), 713 states have internal predecessors, (939), 207 states have call successors, (207), 58 states have call predecessors, (207), 56 states have return successors, (201), 199 states have call predecessors, (201), 201 states have call successors, (201) [2021-12-21 16:08:27,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-21 16:08:27,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:27,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:08:27,206 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:27,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:27,210 INFO L85 PathProgramCache]: Analyzing trace with hash -528872520, now seen corresponding path program 1 times [2021-12-21 16:08:27,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:27,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18825241] [2021-12-21 16:08:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:27,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:27,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:27,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 16:08:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:08:27,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:27,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18825241] [2021-12-21 16:08:27,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18825241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:27,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:27,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:08:27,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113002659] [2021-12-21 16:08:27,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:27,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:08:27,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:27,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:08:27,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:27,658 INFO L87 Difference]: Start difference. First operand has 959 states, 694 states have (on average 1.3530259365994237) internal successors, (939), 713 states have internal predecessors, (939), 207 states have call successors, (207), 58 states have call predecessors, (207), 56 states have return successors, (201), 199 states have call predecessors, (201), 201 states have call successors, (201) Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 16:08:33,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:33,844 INFO L93 Difference]: Finished difference Result 3538 states and 5257 transitions. [2021-12-21 16:08:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:08:33,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-12-21 16:08:33,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:33,868 INFO L225 Difference]: With dead ends: 3538 [2021-12-21 16:08:33,868 INFO L226 Difference]: Without dead ends: 2560 [2021-12-21 16:08:33,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:08:33,885 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 3074 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 1558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3258 SdHoareTripleChecker+Valid, 3830 SdHoareTripleChecker+Invalid, 3729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1558 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:33,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3258 Valid, 3830 Invalid, 3729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1558 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-12-21 16:08:33,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2021-12-21 16:08:34,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1859. [2021-12-21 16:08:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1355 states have (on average 1.3424354243542436) internal successors, (1819), 1372 states have internal predecessors, (1819), 393 states have call successors, (393), 111 states have call predecessors, (393), 110 states have return successors, (387), 383 states have call predecessors, (387), 387 states have call successors, (387) [2021-12-21 16:08:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2599 transitions. [2021-12-21 16:08:34,063 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2599 transitions. Word has length 28 [2021-12-21 16:08:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:34,064 INFO L470 AbstractCegarLoop]: Abstraction has 1859 states and 2599 transitions. [2021-12-21 16:08:34,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 16:08:34,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2599 transitions. [2021-12-21 16:08:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-21 16:08:34,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:34,071 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 16:08:34,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:08:34,072 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash -118423946, now seen corresponding path program 1 times [2021-12-21 16:08:34,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:34,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192946636] [2021-12-21 16:08:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:34,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:34,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:34,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 16:08:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:34,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:08:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 16:08:34,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:34,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192946636] [2021-12-21 16:08:34,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192946636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:34,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:34,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:08:34,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401102424] [2021-12-21 16:08:34,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:34,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:08:34,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:34,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:08:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:34,249 INFO L87 Difference]: Start difference. First operand 1859 states and 2599 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:08:37,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:37,820 INFO L93 Difference]: Finished difference Result 2583 states and 3724 transitions. [2021-12-21 16:08:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 16:08:37,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-12-21 16:08:37,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:37,832 INFO L225 Difference]: With dead ends: 2583 [2021-12-21 16:08:37,832 INFO L226 Difference]: Without dead ends: 2570 [2021-12-21 16:08:37,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:08:37,835 INFO L933 BasicCegarLoop]: 1216 mSDtfsCounter, 2205 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2331 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:37,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2331 Valid, 2255 Invalid, 2092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-21 16:08:37,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-12-21 16:08:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1859. [2021-12-21 16:08:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1355 states have (on average 1.3416974169741698) internal successors, (1818), 1372 states have internal predecessors, (1818), 393 states have call successors, (393), 111 states have call predecessors, (393), 110 states have return successors, (387), 383 states have call predecessors, (387), 387 states have call successors, (387) [2021-12-21 16:08:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2598 transitions. [2021-12-21 16:08:37,905 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2598 transitions. Word has length 38 [2021-12-21 16:08:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:37,906 INFO L470 AbstractCegarLoop]: Abstraction has 1859 states and 2598 transitions. [2021-12-21 16:08:37,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:08:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2598 transitions. [2021-12-21 16:08:37,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-21 16:08:37,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:37,907 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 16:08:37,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:08:37,908 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:37,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:37,908 INFO L85 PathProgramCache]: Analyzing trace with hash -61165644, now seen corresponding path program 1 times [2021-12-21 16:08:37,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:37,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074131979] [2021-12-21 16:08:37,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:37,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:38,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:38,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 16:08:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:08:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 16:08:38,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:38,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074131979] [2021-12-21 16:08:38,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074131979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:38,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:38,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:08:38,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450434376] [2021-12-21 16:08:38,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:38,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:08:38,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:38,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:08:38,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:38,108 INFO L87 Difference]: Start difference. First operand 1859 states and 2598 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:08:43,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:43,722 INFO L93 Difference]: Finished difference Result 6942 states and 10376 transitions. [2021-12-21 16:08:43,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:08:43,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-12-21 16:08:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:43,758 INFO L225 Difference]: With dead ends: 6942 [2021-12-21 16:08:43,759 INFO L226 Difference]: Without dead ends: 5097 [2021-12-21 16:08:43,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:08:43,771 INFO L933 BasicCegarLoop]: 1464 mSDtfsCounter, 3207 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 1626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3365 SdHoareTripleChecker+Valid, 3699 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1626 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:43,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3365 Valid, 3699 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1626 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-21 16:08:43,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2021-12-21 16:08:43,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 4246. [2021-12-21 16:08:43,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4246 states, 3099 states have (on average 1.3262342691190707) internal successors, (4110), 3132 states have internal predecessors, (4110), 851 states have call successors, (851), 220 states have call predecessors, (851), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2021-12-21 16:08:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 6172 transitions. [2021-12-21 16:08:44,024 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 6172 transitions. Word has length 38 [2021-12-21 16:08:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:44,025 INFO L470 AbstractCegarLoop]: Abstraction has 4246 states and 6172 transitions. [2021-12-21 16:08:44,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:08:44,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 6172 transitions. [2021-12-21 16:08:44,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-21 16:08:44,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:44,028 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 16:08:44,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:08:44,029 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:44,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:44,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1896633318, now seen corresponding path program 1 times [2021-12-21 16:08:44,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:44,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158771490] [2021-12-21 16:08:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:44,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 16:08:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:08:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 16:08:44,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:44,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158771490] [2021-12-21 16:08:44,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158771490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:44,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:44,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:08:44,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582231551] [2021-12-21 16:08:44,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:44,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:08:44,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:44,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:08:44,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:44,302 INFO L87 Difference]: Start difference. First operand 4246 states and 6172 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:08:47,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:47,838 INFO L93 Difference]: Finished difference Result 5088 states and 7602 transitions. [2021-12-21 16:08:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:08:47,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-12-21 16:08:47,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:47,862 INFO L225 Difference]: With dead ends: 5088 [2021-12-21 16:08:47,863 INFO L226 Difference]: Without dead ends: 5085 [2021-12-21 16:08:47,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:08:47,867 INFO L933 BasicCegarLoop]: 1178 mSDtfsCounter, 2201 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 1006 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1006 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:47,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2327 Valid, 2166 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1006 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-21 16:08:47,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5085 states. [2021-12-21 16:08:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5085 to 4245. [2021-12-21 16:08:48,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4245 states, 3099 states have (on average 1.3259115843820588) internal successors, (4109), 3131 states have internal predecessors, (4109), 850 states have call successors, (850), 220 states have call predecessors, (850), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2021-12-21 16:08:48,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4245 states to 4245 states and 6170 transitions. [2021-12-21 16:08:48,032 INFO L78 Accepts]: Start accepts. Automaton has 4245 states and 6170 transitions. Word has length 39 [2021-12-21 16:08:48,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:48,033 INFO L470 AbstractCegarLoop]: Abstraction has 4245 states and 6170 transitions. [2021-12-21 16:08:48,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:08:48,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4245 states and 6170 transitions. [2021-12-21 16:08:48,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-21 16:08:48,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:48,036 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 16:08:48,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:08:48,036 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:48,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1333415799, now seen corresponding path program 1 times [2021-12-21 16:08:48,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:48,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499295123] [2021-12-21 16:08:48,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:48,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 16:08:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:08:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 16:08:48,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:48,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499295123] [2021-12-21 16:08:48,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499295123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:48,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:48,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:08:48,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676379583] [2021-12-21 16:08:48,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:48,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:08:48,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:48,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:08:48,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:48,238 INFO L87 Difference]: Start difference. First operand 4245 states and 6170 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:08:51,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:51,826 INFO L93 Difference]: Finished difference Result 5087 states and 7600 transitions. [2021-12-21 16:08:51,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:08:51,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-12-21 16:08:51,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:51,851 INFO L225 Difference]: With dead ends: 5087 [2021-12-21 16:08:51,851 INFO L226 Difference]: Without dead ends: 5084 [2021-12-21 16:08:51,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:08:51,856 INFO L933 BasicCegarLoop]: 1182 mSDtfsCounter, 2226 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 1007 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1007 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:51,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2350 Valid, 2148 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1007 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-21 16:08:51,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2021-12-21 16:08:52,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 4244. [2021-12-21 16:08:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4244 states, 3099 states have (on average 1.325588899645047) internal successors, (4108), 3130 states have internal predecessors, (4108), 849 states have call successors, (849), 220 states have call predecessors, (849), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2021-12-21 16:08:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4244 states to 4244 states and 6168 transitions. [2021-12-21 16:08:52,094 INFO L78 Accepts]: Start accepts. Automaton has 4244 states and 6168 transitions. Word has length 40 [2021-12-21 16:08:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:52,094 INFO L470 AbstractCegarLoop]: Abstraction has 4244 states and 6168 transitions. [2021-12-21 16:08:52,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:08:52,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4244 states and 6168 transitions. [2021-12-21 16:08:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-21 16:08:52,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:52,097 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 16:08:52,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 16:08:52,097 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:52,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:52,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1614271811, now seen corresponding path program 1 times [2021-12-21 16:08:52,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:52,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291392265] [2021-12-21 16:08:52,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:52,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:52,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 16:08:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:52,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:08:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 16:08:52,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:52,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291392265] [2021-12-21 16:08:52,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291392265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:52,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:52,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:08:52,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238187075] [2021-12-21 16:08:52,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:52,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:08:52,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:52,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:08:52,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:52,262 INFO L87 Difference]: Start difference. First operand 4244 states and 6168 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:08:57,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:08:57,988 INFO L93 Difference]: Finished difference Result 14347 states and 21990 transitions. [2021-12-21 16:08:57,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:08:57,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2021-12-21 16:08:57,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:08:58,035 INFO L225 Difference]: With dead ends: 14347 [2021-12-21 16:08:58,035 INFO L226 Difference]: Without dead ends: 10117 [2021-12-21 16:08:58,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:08:58,058 INFO L933 BasicCegarLoop]: 1404 mSDtfsCounter, 3103 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 1592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3266 SdHoareTripleChecker+Valid, 3703 SdHoareTripleChecker+Invalid, 3681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1592 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-21 16:08:58,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3266 Valid, 3703 Invalid, 3681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1592 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-21 16:08:58,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10117 states. [2021-12-21 16:08:58,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10117 to 8695. [2021-12-21 16:08:58,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8695 states, 6351 states have (on average 1.3254605573925367) internal successors, (8418), 6411 states have internal predecessors, (8418), 1726 states have call successors, (1726), 435 states have call predecessors, (1726), 617 states have return successors, (2913), 1880 states have call predecessors, (2913), 1719 states have call successors, (2913) [2021-12-21 16:08:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8695 states to 8695 states and 13057 transitions. [2021-12-21 16:08:58,466 INFO L78 Accepts]: Start accepts. Automaton has 8695 states and 13057 transitions. Word has length 41 [2021-12-21 16:08:58,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:08:58,468 INFO L470 AbstractCegarLoop]: Abstraction has 8695 states and 13057 transitions. [2021-12-21 16:08:58,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:08:58,469 INFO L276 IsEmpty]: Start isEmpty. Operand 8695 states and 13057 transitions. [2021-12-21 16:08:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-21 16:08:58,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:08:58,471 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 16:08:58,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 16:08:58,472 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:08:58,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:08:58,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1496697658, now seen corresponding path program 1 times [2021-12-21 16:08:58,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:08:58,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40667351] [2021-12-21 16:08:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:08:58,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:08:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:58,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:08:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:58,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 16:08:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:58,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:08:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:08:58,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 16:08:58,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:08:58,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40667351] [2021-12-21 16:08:58,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40667351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:08:58,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:08:58,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:08:58,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603910416] [2021-12-21 16:08:58,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:08:58,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:08:58,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:08:58,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:08:58,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:08:58,650 INFO L87 Difference]: Start difference. First operand 8695 states and 13057 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:09:03,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:09:03,419 INFO L93 Difference]: Finished difference Result 10085 states and 15441 transitions. [2021-12-21 16:09:03,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:09:03,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2021-12-21 16:09:03,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:09:03,477 INFO L225 Difference]: With dead ends: 10085 [2021-12-21 16:09:03,477 INFO L226 Difference]: Without dead ends: 10073 [2021-12-21 16:09:03,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:09:03,482 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 2196 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:09:03,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2321 Valid, 2158 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1005 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-21 16:09:03,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10073 states. [2021-12-21 16:09:03,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10073 to 8685. [2021-12-21 16:09:03,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8685 states, 6342 states have (on average 1.325291706086408) internal successors, (8405), 6401 states have internal predecessors, (8405), 1725 states have call successors, (1725), 435 states have call predecessors, (1725), 617 states have return successors, (2913), 1880 states have call predecessors, (2913), 1719 states have call successors, (2913) [2021-12-21 16:09:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8685 states to 8685 states and 13043 transitions. [2021-12-21 16:09:03,840 INFO L78 Accepts]: Start accepts. Automaton has 8685 states and 13043 transitions. Word has length 42 [2021-12-21 16:09:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:09:03,840 INFO L470 AbstractCegarLoop]: Abstraction has 8685 states and 13043 transitions. [2021-12-21 16:09:03,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:09:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 8685 states and 13043 transitions. [2021-12-21 16:09:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-21 16:09:03,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:09:03,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:09:03,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 16:09:03,845 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:09:03,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:09:03,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1155027132, now seen corresponding path program 1 times [2021-12-21 16:09:03,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:09:03,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374572498] [2021-12-21 16:09:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:09:03,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:09:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:09:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 16:09:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 16:09:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 16:09:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 16:09:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:09:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:03,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:09:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:04,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 16:09:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:04,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:09:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:04,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 16:09:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:04,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:09:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:09:04,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:09:04,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374572498] [2021-12-21 16:09:04,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374572498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:09:04,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:09:04,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 16:09:04,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130618534] [2021-12-21 16:09:04,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:09:04,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:09:04,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:09:04,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:09:04,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:09:04,035 INFO L87 Difference]: Start difference. First operand 8685 states and 13043 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (15), 8 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 16:09:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:09:12,323 INFO L93 Difference]: Finished difference Result 28985 states and 50083 transitions. [2021-12-21 16:09:12,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 16:09:12,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (15), 8 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2021-12-21 16:09:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:09:12,428 INFO L225 Difference]: With dead ends: 28985 [2021-12-21 16:09:12,429 INFO L226 Difference]: Without dead ends: 20314 [2021-12-21 16:09:12,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2021-12-21 16:09:12,470 INFO L933 BasicCegarLoop]: 1373 mSDtfsCounter, 6212 mSDsluCounter, 4101 mSDsCounter, 0 mSdLazyCounter, 4957 mSolverCounterSat, 5008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6318 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 9965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5008 IncrementalHoareTripleChecker+Valid, 4957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:09:12,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6318 Valid, 5474 Invalid, 9965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5008 Valid, 4957 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-12-21 16:09:12,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20314 states. [2021-12-21 16:09:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20314 to 11637. [2021-12-21 16:09:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11637 states, 8428 states have (on average 1.308139534883721) internal successors, (11025), 8455 states have internal predecessors, (11025), 2337 states have call successors, (2337), 437 states have call predecessors, (2337), 871 states have return successors, (5025), 2784 states have call predecessors, (5025), 2331 states have call successors, (5025) [2021-12-21 16:09:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11637 states to 11637 states and 18387 transitions. [2021-12-21 16:09:13,366 INFO L78 Accepts]: Start accepts. Automaton has 11637 states and 18387 transitions. Word has length 93 [2021-12-21 16:09:13,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:09:13,367 INFO L470 AbstractCegarLoop]: Abstraction has 11637 states and 18387 transitions. [2021-12-21 16:09:13,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (15), 8 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 16:09:13,367 INFO L276 IsEmpty]: Start isEmpty. Operand 11637 states and 18387 transitions. [2021-12-21 16:09:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-21 16:09:13,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:09:13,374 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 16:09:13,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 16:09:13,375 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:09:13,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:09:13,375 INFO L85 PathProgramCache]: Analyzing trace with hash -954431656, now seen corresponding path program 1 times [2021-12-21 16:09:13,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:09:13,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791055146] [2021-12-21 16:09:13,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:09:13,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:09:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:09:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 16:09:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:09:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 16:09:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:09:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 16:09:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 16:09:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 16:09:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 16:09:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:09:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:09:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:09:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:09:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 16:09:13,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:09:13,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791055146] [2021-12-21 16:09:13,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791055146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:09:13,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:09:13,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 16:09:13,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468792384] [2021-12-21 16:09:13,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:09:13,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:09:13,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:09:13,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:09:13,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:09:13,624 INFO L87 Difference]: Start difference. First operand 11637 states and 18387 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 8 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12)