./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.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 f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:36:27,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:36:27,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:36:27,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:36:27,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:36:27,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:36:27,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:36:27,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:36:27,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:36:27,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:36:27,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:36:27,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:36:27,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:36:27,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:36:27,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:36:27,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:36:27,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:36:27,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:36:27,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:36:27,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:36:27,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:36:27,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:36:27,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:36:27,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:36:27,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:36:27,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:36:27,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:36:27,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:36:27,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:36:27,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:36:27,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:36:27,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:36:27,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:36:27,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:36:27,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:36:27,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:36:27,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:36:27,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:36:27,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:36:27,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:36:27,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:36:27,173 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:36:27,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:36:27,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:36:27,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:36:27,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:36:27,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:36:27,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:36:27,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:36:27,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:36:27,214 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:36:27,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:36:27,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:36:27,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:36:27,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:36:27,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:36:27,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:36:27,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:36:27,216 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:36:27,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:36:27,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:36:27,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:36:27,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:36:27,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:36:27,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:36:27,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:36:27,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:36:27,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:36:27,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:36:27,226 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:36:27,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:36:27,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:36:27,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9061bc17f5b81d8b71557fcfcad78d4aeee3eb70f5055a497a3bfac3b14ddef [2021-12-28 04:36:27,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:36:27,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:36:27,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:36:27,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:36:27,553 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:36:27,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2021-12-28 04:36:27,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/511282343/b8c005594a7e405ba993b4a4d06840cf/FLAGe39c1037d [2021-12-28 04:36:28,487 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:36:28,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2021-12-28 04:36:28,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/511282343/b8c005594a7e405ba993b4a4d06840cf/FLAGe39c1037d [2021-12-28 04:36:28,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/511282343/b8c005594a7e405ba993b4a4d06840cf [2021-12-28 04:36:28,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:36:28,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:36:28,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:36:28,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:36:28,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:36:28,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:36:28" (1/1) ... [2021-12-28 04:36:28,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fdea08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:28, skipping insertion in model container [2021-12-28 04:36:28,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:36:28" (1/1) ... [2021-12-28 04:36:28,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:36:28,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:36:30,484 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2021-12-28 04:36:30,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:36:30,551 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:36:31,103 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i[338700,338713] [2021-12-28 04:36:31,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:36:31,191 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:36:31,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:31 WrapperNode [2021-12-28 04:36:31,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:36:31,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:36:31,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:36:31,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:36:31,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:31" (1/1) ... [2021-12-28 04:36:31,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:31" (1/1) ... [2021-12-28 04:36:31,546 INFO L137 Inliner]: procedures = 274, calls = 5784, calls flagged for inlining = 107, calls inlined = 80, statements flattened = 6383 [2021-12-28 04:36:31,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:36:31,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:36:31,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:36:31,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:36:31,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:31" (1/1) ... [2021-12-28 04:36:31,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:31" (1/1) ... [2021-12-28 04:36:31,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:31" (1/1) ... [2021-12-28 04:36:31,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:31" (1/1) ... [2021-12-28 04:36:31,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:31" (1/1) ... [2021-12-28 04:36:31,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:31" (1/1) ... [2021-12-28 04:36:31,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:31" (1/1) ... [2021-12-28 04:36:31,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:36:31,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:36:31,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:36:31,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:36:31,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:31" (1/1) ... [2021-12-28 04:36:31,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:36:31,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:36:31,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 04:36:31,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 04:36:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue_status_stage [2021-12-28 04:36:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue_status_stage [2021-12-28 04:36:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure ep0_queue [2021-12-28 04:36:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ep0_queue [2021-12-28 04:36:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure ep_bd_list_free [2021-12-28 04:36:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_bd_list_free [2021-12-28 04:36:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:36:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:36:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure init_ep [2021-12-28 04:36:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ep [2021-12-28 04:36:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:36:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:36:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-12-28 04:36:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-12-28 04:36:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-28 04:36:31,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-28 04:36:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_reset [2021-12-28 04:36:31,884 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_reset [2021-12-28 04:36:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:36:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:36:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-28 04:36:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-28 04:36:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_disable [2021-12-28 04:36:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_disable [2021-12-28 04:36:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure usb_del_gadget_udc [2021-12-28 04:36:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_del_gadget_udc [2021-12-28 04:36:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:36:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:36:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 04:36:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 04:36:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2021-12-28 04:36:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2021-12-28 04:36:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:36:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:36:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-12-28 04:36:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-12-28 04:36:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_req_complete [2021-12-28 04:36:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_req_complete [2021-12-28 04:36:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_free_request [2021-12-28 04:36:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_free_request [2021-12-28 04:36:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure bd_add_to_bdi [2021-12-28 04:36:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_add_to_bdi [2021-12-28 04:36:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_remove [2021-12-28 04:36:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_remove [2021-12-28 04:36:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-12-28 04:36:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-12-28 04:36:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:36:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-28 04:36:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-28 04:36:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_stop [2021-12-28 04:36:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_stop [2021-12-28 04:36:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:36:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-28 04:36:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-28 04:36:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-28 04:36:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-28 04:36:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_isoc [2021-12-28 04:36:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_isoc [2021-12-28 04:36:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 04:36:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 04:36:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:36:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:36:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_free_ep [2021-12-28 04:36:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_free_ep [2021-12-28 04:36:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_notify_xfr [2021-12-28 04:36:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_notify_xfr [2021-12-28 04:36:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-28 04:36:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-28 04:36:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 04:36:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 04:36:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop_ep [2021-12-28 04:36:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop_ep [2021-12-28 04:36:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-28 04:36:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-28 04:36:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_set_stall [2021-12-28 04:36:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_set_stall [2021-12-28 04:36:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-28 04:36:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-28 04:36:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_map_request [2021-12-28 04:36:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_map_request [2021-12-28 04:36:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_free [2021-12-28 04:36:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_free [2021-12-28 04:36:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_dbg_bd_list [2021-12-28 04:36:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_dbg_bd_list [2021-12-28 04:36:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure ep_set_halt [2021-12-28 04:36:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_set_halt [2021-12-28 04:36:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-28 04:36:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-28 04:36:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_tbi [2021-12-28 04:36:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_tbi [2021-12-28 04:36:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-28 04:36:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-28 04:36:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:36:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_mem_init [2021-12-28 04:36:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_mem_init [2021-12-28 04:36:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_config_ep [2021-12-28 04:36:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_config_ep [2021-12-28 04:36:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_enable [2021-12-28 04:36:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_enable [2021-12-28 04:36:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_queue_xfr [2021-12-28 04:36:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_queue_xfr [2021-12-28 04:36:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_hw_exit [2021-12-28 04:36:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_hw_exit [2021-12-28 04:36:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-28 04:36:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-28 04:36:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 04:36:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 04:36:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_disable [2021-12-28 04:36:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_disable [2021-12-28 04:36:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-28 04:36:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-28 04:36:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:36:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:36:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:36:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:36:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:36:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:36:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-12-28 04:36:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-28 04:36:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-28 04:36:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-12-28 04:36:31,937 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-12-28 04:36:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:36:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_gadget_ep_dequeue [2021-12-28 04:36:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_gadget_ep_dequeue [2021-12-28 04:36:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_state [2021-12-28 04:36:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_state [2021-12-28 04:36:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-28 04:36:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-28 04:36:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:36:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_start [2021-12-28 04:36:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_start [2021-12-28 04:36:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure poll_oip [2021-12-28 04:36:31,938 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_oip [2021-12-28 04:36:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2021-12-28 04:36:31,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2021-12-28 04:36:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_stop [2021-12-28 04:36:31,939 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_stop [2021-12-28 04:36:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_softconn [2021-12-28 04:36:31,941 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_softconn [2021-12-28 04:36:31,941 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_run [2021-12-28 04:36:31,941 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_run [2021-12-28 04:36:31,941 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2021-12-28 04:36:31,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2021-12-28 04:36:31,941 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_submit_cmd [2021-12-28 04:36:31,942 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_submit_cmd [2021-12-28 04:36:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_udc_wakeup [2021-12-28 04:36:31,942 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_udc_wakeup [2021-12-28 04:36:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-28 04:36:31,942 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-28 04:36:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure find_end_bdi [2021-12-28 04:36:31,942 INFO L138 BoogieDeclarations]: Found implementation of procedure find_end_bdi [2021-12-28 04:36:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_to_bd [2021-12-28 04:36:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_to_bd [2021-12-28 04:36:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:36:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_writel [2021-12-28 04:36:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_writel [2021-12-28 04:36:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:36:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:36:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure chain_table [2021-12-28 04:36:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_table [2021-12-28 04:36:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_readl [2021-12-28 04:36:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_readl [2021-12-28 04:36:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_ep_enable [2021-12-28 04:36:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_ep_enable [2021-12-28 04:36:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 04:36:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 04:36:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure bdc_probe [2021-12-28 04:36:31,945 INFO L138 BoogieDeclarations]: Found implementation of procedure bdc_probe [2021-12-28 04:36:32,596 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:36:32,600 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:36:33,820 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:36:41,443 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:36:41,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:36:41,464 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:36:41,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:36:41 BoogieIcfgContainer [2021-12-28 04:36:41,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:36:41,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:36:41,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:36:41,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:36:41,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:36:28" (1/3) ... [2021-12-28 04:36:41,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b91e669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:36:41, skipping insertion in model container [2021-12-28 04:36:41,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:36:31" (2/3) ... [2021-12-28 04:36:41,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b91e669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:36:41, skipping insertion in model container [2021-12-28 04:36:41,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:36:41" (3/3) ... [2021-12-28 04:36:41,474 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--bdc--bdc.ko-entry_point.cil.out.i [2021-12-28 04:36:41,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:36:41,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:36:41,526 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:36:41,531 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 04:36:41,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:36:41,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 1459 states, 1027 states have (on average 1.3320350535540408) internal successors, (1368), 1045 states have internal predecessors, (1368), 353 states have call successors, (353), 78 states have call predecessors, (353), 77 states have return successors, (348), 348 states have call predecessors, (348), 348 states have call successors, (348) [2021-12-28 04:36:41,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-28 04:36:41,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:36:41,604 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:36:41,605 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:36:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:36:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2139334231, now seen corresponding path program 1 times [2021-12-28 04:36:41,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:36:41,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312725387] [2021-12-28 04:36:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:36:41,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:36:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:42,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 04:36:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:36:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:42,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:36:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:42,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 04:36:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:36:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:42,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 04:36:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:42,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:36:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 04:36:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:36:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-28 04:36:42,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:36:42,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312725387] [2021-12-28 04:36:42,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312725387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:36:42,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:36:42,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:36:42,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586299627] [2021-12-28 04:36:42,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:36:42,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:36:42,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:36:42,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:36:42,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:36:42,392 INFO L87 Difference]: Start difference. First operand has 1459 states, 1027 states have (on average 1.3320350535540408) internal successors, (1368), 1045 states have internal predecessors, (1368), 353 states have call successors, (353), 78 states have call predecessors, (353), 77 states have return successors, (348), 348 states have call predecessors, (348), 348 states have call successors, (348) Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:36:47,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:36:50,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:36:52,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:36:52,899 INFO L93 Difference]: Finished difference Result 4012 states and 5742 transitions. [2021-12-28 04:36:52,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:36:52,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2021-12-28 04:36:52,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:36:52,933 INFO L225 Difference]: With dead ends: 4012 [2021-12-28 04:36:52,933 INFO L226 Difference]: Without dead ends: 2530 [2021-12-28 04:36:52,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:36:52,949 INFO L933 BasicCegarLoop]: 2279 mSDtfsCounter, 1909 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 1984 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2113 SdHoareTripleChecker+Valid, 4966 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1984 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:36:52,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2113 Valid, 4966 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1984 Valid, 1383 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2021-12-28 04:36:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-12-28 04:36:53,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2466. [2021-12-28 04:36:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 1727 states have (on average 1.3103647944412276) internal successors, (2263), 1748 states have internal predecessors, (2263), 601 states have call successors, (601), 138 states have call predecessors, (601), 137 states have return successors, (600), 599 states have call predecessors, (600), 600 states have call successors, (600) [2021-12-28 04:36:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3464 transitions. [2021-12-28 04:36:53,194 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3464 transitions. Word has length 72 [2021-12-28 04:36:53,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:36:53,195 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 3464 transitions. [2021-12-28 04:36:53,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:36:53,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3464 transitions. [2021-12-28 04:36:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-28 04:36:53,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:36:53,211 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:36:53,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:36:53,212 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:36:53,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:36:53,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1055536844, now seen corresponding path program 1 times [2021-12-28 04:36:53,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:36:53,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395773522] [2021-12-28 04:36:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:36:53,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:36:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 04:36:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:36:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:36:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:36:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:36:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:36:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:36:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:36:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:36:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:36:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:36:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:36:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 04:36:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:36:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:36:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 04:36:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:36:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 04:36:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:36:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 04:36:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:36:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:36:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-28 04:36:53,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:36:53,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395773522] [2021-12-28 04:36:53,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395773522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:36:53,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:36:53,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:36:53,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594625127] [2021-12-28 04:36:53,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:36:53,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:36:53,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:36:53,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:36:53,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:36:53,799 INFO L87 Difference]: Start difference. First operand 2466 states and 3464 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 04:36:57,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:01,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:04,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:37:04,561 INFO L93 Difference]: Finished difference Result 4526 states and 6404 transitions. [2021-12-28 04:37:04,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:37:04,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 152 [2021-12-28 04:37:04,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:37:04,593 INFO L225 Difference]: With dead ends: 4526 [2021-12-28 04:37:04,593 INFO L226 Difference]: Without dead ends: 4523 [2021-12-28 04:37:04,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:37:04,599 INFO L933 BasicCegarLoop]: 2381 mSDtfsCounter, 1908 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 1897 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 5127 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1897 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-12-28 04:37:04,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2096 Valid, 5127 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1897 Valid, 1359 Invalid, 2 Unknown, 0 Unchecked, 10.5s Time] [2021-12-28 04:37:04,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2021-12-28 04:37:04,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 4379. [2021-12-28 04:37:04,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 3068 states have (on average 1.308670143415906) internal successors, (4015), 3118 states have internal predecessors, (4015), 1060 states have call successors, (1060), 250 states have call predecessors, (1060), 250 states have return successors, (1078), 1044 states have call predecessors, (1078), 1059 states have call successors, (1078) [2021-12-28 04:37:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 6153 transitions. [2021-12-28 04:37:04,848 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 6153 transitions. Word has length 152 [2021-12-28 04:37:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:37:04,851 INFO L470 AbstractCegarLoop]: Abstraction has 4379 states and 6153 transitions. [2021-12-28 04:37:04,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 04:37:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 6153 transitions. [2021-12-28 04:37:04,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-28 04:37:04,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:37:04,859 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:37:04,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:37:04,859 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:37:04,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:37:04,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1344442639, now seen corresponding path program 1 times [2021-12-28 04:37:04,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:37:04,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296912825] [2021-12-28 04:37:04,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:37:04,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:37:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 04:37:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:37:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:37:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:37:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 04:37:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 04:37:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 04:37:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 04:37:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 04:37:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-28 04:37:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-28 04:37:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-28 04:37:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-28 04:37:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-28 04:37:05,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:37:05,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296912825] [2021-12-28 04:37:05,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296912825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:37:05,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:37:05,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:37:05,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752102916] [2021-12-28 04:37:05,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:37:05,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:37:05,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:37:05,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:37:05,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:37:05,429 INFO L87 Difference]: Start difference. First operand 4379 states and 6153 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 04:37:10,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:12,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:14,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:37:21,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:37:21,159 INFO L93 Difference]: Finished difference Result 8925 states and 12587 transitions. [2021-12-28 04:37:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:37:21,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 194 [2021-12-28 04:37:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:37:21,182 INFO L225 Difference]: With dead ends: 8925 [2021-12-28 04:37:21,183 INFO L226 Difference]: Without dead ends: 4550 [2021-12-28 04:37:21,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-28 04:37:21,198 INFO L933 BasicCegarLoop]: 1720 mSDtfsCounter, 1253 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 4380 mSolverCounterSat, 1189 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 5572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1189 IncrementalHoareTripleChecker+Valid, 4380 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-12-28 04:37:21,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1510 Valid, 3346 Invalid, 5572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1189 Valid, 4380 Invalid, 3 Unknown, 0 Unchecked, 15.5s Time] [2021-12-28 04:37:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-12-28 04:37:21,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 4441. [2021-12-28 04:37:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4441 states, 3108 states have (on average 1.3072715572715572) internal successors, (4063), 3160 states have internal predecessors, (4063), 1076 states have call successors, (1076), 250 states have call predecessors, (1076), 256 states have return successors, (1105), 1062 states have call predecessors, (1105), 1075 states have call successors, (1105) [2021-12-28 04:37:21,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 6244 transitions. [2021-12-28 04:37:21,376 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 6244 transitions. Word has length 194 [2021-12-28 04:37:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:37:21,378 INFO L470 AbstractCegarLoop]: Abstraction has 4441 states and 6244 transitions. [2021-12-28 04:37:21,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 04:37:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 6244 transitions. [2021-12-28 04:37:21,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-28 04:37:21,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:37:21,389 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:37:21,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:37:21,390 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:37:21,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:37:21,390 INFO L85 PathProgramCache]: Analyzing trace with hash 583830063, now seen corresponding path program 1 times [2021-12-28 04:37:21,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:37:21,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717661321] [2021-12-28 04:37:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:37:21,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:37:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 04:37:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:37:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:37:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:37:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 04:37:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 04:37:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 04:37:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 04:37:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 04:37:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-28 04:37:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-28 04:37:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-28 04:37:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-28 04:37:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-28 04:37:21,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:37:21,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717661321] [2021-12-28 04:37:21,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717661321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:37:21,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:37:21,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:37:21,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332964897] [2021-12-28 04:37:21,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:37:21,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:37:21,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:37:21,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:37:21,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:37:21,919 INFO L87 Difference]: Start difference. First operand 4441 states and 6244 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)