./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.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 e5d904d16bfadec9650eee3419425295e6c215eb7ede78bce460c631a5749a1f --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:14:29,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:14:29,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:14:29,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:14:29,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:14:29,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:14:29,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:14:29,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:14:29,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:14:29,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:14:29,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:14:29,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:14:29,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:14:29,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:14:29,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:14:29,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:14:29,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:14:29,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:14:29,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:14:29,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:14:29,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:14:29,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:14:29,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:14:29,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:14:29,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:14:29,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:14:29,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:14:29,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:14:29,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:14:29,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:14:29,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:14:29,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:14:29,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:14:29,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:14:29,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:14:29,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:14:29,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:14:29,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:14:29,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:14:29,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:14:29,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:14:29,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:14:29,283 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:14:29,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:14:29,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:14:29,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:14:29,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:14:29,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:14:29,284 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:14:29,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:14:29,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:14:29,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:14:29,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:14:29,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:14:29,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:14:29,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:14:29,285 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:14:29,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:14:29,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:14:29,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:14:29,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:14:29,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:14:29,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:14:29,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:14:29,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:14:29,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:14:29,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:14:29,288 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:14:29,288 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:14:29,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:14:29,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:14:29,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5d904d16bfadec9650eee3419425295e6c215eb7ede78bce460c631a5749a1f [2021-11-07 13:14:29,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:14:29,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:14:29,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:14:29,484 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:14:29,485 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:14:29,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i [2021-11-07 13:14:29,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c798876b/58955ddc9e2e46e5be073d02b665cc21/FLAGbd9639929 [2021-11-07 13:14:30,211 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:14:30,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i [2021-11-07 13:14:30,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c798876b/58955ddc9e2e46e5be073d02b665cc21/FLAGbd9639929 [2021-11-07 13:14:30,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c798876b/58955ddc9e2e46e5be073d02b665cc21 [2021-11-07 13:14:30,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:14:30,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:14:30,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:14:30,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:14:30,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:14:30,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:30" (1/1) ... [2021-11-07 13:14:30,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@efb8e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:30, skipping insertion in model container [2021-11-07 13:14:30,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:14:30" (1/1) ... [2021-11-07 13:14:30,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:14:30,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:14:31,293 WARN L228 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i[167966,167979] [2021-11-07 13:14:32,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:14:32,083 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:14:32,188 WARN L228 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i[167966,167979] [2021-11-07 13:14:32,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:14:32,478 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:14:32,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:32 WrapperNode [2021-11-07 13:14:32,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:14:32,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:14:32,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:14:32,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:14:32,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:32" (1/1) ... [2021-11-07 13:14:32,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:32" (1/1) ... [2021-11-07 13:14:33,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:14:33,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:14:33,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:14:33,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:14:33,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:32" (1/1) ... [2021-11-07 13:14:33,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:32" (1/1) ... [2021-11-07 13:14:33,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:32" (1/1) ... [2021-11-07 13:14:33,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:32" (1/1) ... [2021-11-07 13:14:33,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:32" (1/1) ... [2021-11-07 13:14:33,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:32" (1/1) ... [2021-11-07 13:14:33,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:32" (1/1) ... [2021-11-07 13:14:33,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:14:33,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:14:33,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:14:33,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:14:33,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:32" (1/1) ... [2021-11-07 13:14:33,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:14:33,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:14:33,883 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) [2021-11-07 13:14:33,900 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 [2021-11-07 13:14:33,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:14:33,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:14:33,910 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 13:14:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:14:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:14:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 13:14:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:14:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:14:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:14:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:14:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:14:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:14:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:14:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:14:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 13:14:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:14:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:14:33,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:20:00,040 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:20:00,041 INFO L299 CfgBuilder]: Removed 2849 assume(true) statements. [2021-11-07 13:20:00,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:00 BoogieIcfgContainer [2021-11-07 13:20:00,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:20:00,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:20:00,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:20:00,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:20:00,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:14:30" (1/3) ... [2021-11-07 13:20:00,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a394e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:00, skipping insertion in model container [2021-11-07 13:20:00,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:14:32" (2/3) ... [2021-11-07 13:20:00,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a394e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:00, skipping insertion in model container [2021-11-07 13:20:00,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:00" (3/3) ... [2021-11-07 13:20:00,051 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i [2021-11-07 13:20:00,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:20:00,054 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 13:20:00,110 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:20:00,115 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 13:20:00,115 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 13:20:00,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 3680 states, 3678 states have (on average 1.5065252854812399) internal successors, (5541), 3679 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 13:20:00,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:00,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:20:00,183 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:00,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash -487043136, now seen corresponding path program 1 times [2021-11-07 13:20:00,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:00,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173615476] [2021-11-07 13:20:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:00,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:20:00,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:00,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173615476] [2021-11-07 13:20:00,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173615476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:00,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:00,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:20:00,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727219198] [2021-11-07 13:20:00,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:00,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:20:00,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:00,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:20:00,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:00,992 INFO L87 Difference]: Start difference. First operand has 3680 states, 3678 states have (on average 1.5065252854812399) internal successors, (5541), 3679 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:03,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:20:03,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:03,486 INFO L93 Difference]: Finished difference Result 10664 states and 16105 transitions. [2021-11-07 13:20:03,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:20:03,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 13:20:03,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:03,528 INFO L225 Difference]: With dead ends: 10664 [2021-11-07 13:20:03,528 INFO L226 Difference]: Without dead ends: 6943 [2021-11-07 13:20:03,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:03,543 INFO L933 BasicCegarLoop]: 5422 mSDtfsCounter, 4981 mSDsluCounter, 5402 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2140.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4981 SdHoareTripleChecker+Valid, 10824 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.73ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2263.67ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:03,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4981 Valid, 10824 Invalid, 15 Unknown, 0 Unchecked, 25.73ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2263.67ms Time] [2021-11-07 13:20:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6943 states. [2021-11-07 13:20:03,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6943 to 6943. [2021-11-07 13:20:03,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6943 states, 6942 states have (on average 1.4860270815326995) internal successors, (10316), 6942 states have internal predecessors, (10316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 10316 transitions. [2021-11-07 13:20:03,713 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 10316 transitions. Word has length 122 [2021-11-07 13:20:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:20:03,714 INFO L470 AbstractCegarLoop]: Abstraction has 6943 states and 10316 transitions. [2021-11-07 13:20:03,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 10316 transitions. [2021-11-07 13:20:03,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-07 13:20:03,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:03,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:20:03,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:20:03,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:03,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:03,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1149235761, now seen corresponding path program 1 times [2021-11-07 13:20:03,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:03,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538360891] [2021-11-07 13:20:03,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:03,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:04,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:20:04,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:04,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538360891] [2021-11-07 13:20:04,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538360891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:04,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:04,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:20:04,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463746443] [2021-11-07 13:20:04,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:04,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:20:04,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:04,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:20:04,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:20:04,233 INFO L87 Difference]: Start difference. First operand 6943 states and 10316 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:04,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:04,713 INFO L93 Difference]: Finished difference Result 20335 states and 30353 transitions. [2021-11-07 13:20:04,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:20:04,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-07 13:20:04,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:04,765 INFO L225 Difference]: With dead ends: 20335 [2021-11-07 13:20:04,765 INFO L226 Difference]: Without dead ends: 13633 [2021-11-07 13:20:04,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.17ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:20:04,782 INFO L933 BasicCegarLoop]: 5365 mSDtfsCounter, 5336 mSDsluCounter, 15786 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 182.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5336 SdHoareTripleChecker+Valid, 21151 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.81ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 225.33ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:04,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5336 Valid, 21151 Invalid, 93 Unknown, 0 Unchecked, 28.81ms Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 225.33ms Time] [2021-11-07 13:20:04,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13633 states. [2021-11-07 13:20:05,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13633 to 13633. [2021-11-07 13:20:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13633 states, 13632 states have (on average 1.490243544600939) internal successors, (20315), 13632 states have internal predecessors, (20315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13633 states to 13633 states and 20315 transitions. [2021-11-07 13:20:05,067 INFO L78 Accepts]: Start accepts. Automaton has 13633 states and 20315 transitions. Word has length 128 [2021-11-07 13:20:05,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:20:05,068 INFO L470 AbstractCegarLoop]: Abstraction has 13633 states and 20315 transitions. [2021-11-07 13:20:05,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 13633 states and 20315 transitions. [2021-11-07 13:20:05,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-07 13:20:05,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:05,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:20:05,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:20:05,077 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:05,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:05,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1746722557, now seen corresponding path program 1 times [2021-11-07 13:20:05,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:05,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312077865] [2021-11-07 13:20:05,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:05,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:20:05,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:05,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312077865] [2021-11-07 13:20:05,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312077865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:05,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:05,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:20:05,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724176076] [2021-11-07 13:20:05,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:05,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:20:05,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:05,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:20:05,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:05,425 INFO L87 Difference]: Start difference. First operand 13633 states and 20315 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:05,893 INFO L93 Difference]: Finished difference Result 36701 states and 54799 transitions. [2021-11-07 13:20:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:20:05,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-07 13:20:05,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:05,946 INFO L225 Difference]: With dead ends: 36701 [2021-11-07 13:20:05,947 INFO L226 Difference]: Without dead ends: 23314 [2021-11-07 13:20:05,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:05,972 INFO L933 BasicCegarLoop]: 5383 mSDtfsCounter, 3965 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 153.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3965 SdHoareTripleChecker+Valid, 10432 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.99ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 176.13ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:05,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3965 Valid, 10432 Invalid, 35 Unknown, 0 Unchecked, 12.99ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 176.13ms Time] [2021-11-07 13:20:05,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23314 states. [2021-11-07 13:20:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23314 to 23155. [2021-11-07 13:20:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23155 states, 23154 states have (on average 1.493953528547983) internal successors, (34591), 23154 states have internal predecessors, (34591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:06,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23155 states to 23155 states and 34591 transitions. [2021-11-07 13:20:06,402 INFO L78 Accepts]: Start accepts. Automaton has 23155 states and 34591 transitions. Word has length 161 [2021-11-07 13:20:06,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:20:06,404 INFO L470 AbstractCegarLoop]: Abstraction has 23155 states and 34591 transitions. [2021-11-07 13:20:06,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:06,404 INFO L276 IsEmpty]: Start isEmpty. Operand 23155 states and 34591 transitions. [2021-11-07 13:20:06,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 13:20:06,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:06,412 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:20:06,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:20:06,412 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:06,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash 303283693, now seen corresponding path program 1 times [2021-11-07 13:20:06,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:06,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063734156] [2021-11-07 13:20:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:06,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:20:06,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:06,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063734156] [2021-11-07 13:20:06,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063734156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:06,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:06,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:20:06,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045200528] [2021-11-07 13:20:06,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:06,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:20:06,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:20:06,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:06,755 INFO L87 Difference]: Start difference. First operand 23155 states and 34591 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:07,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:07,412 INFO L93 Difference]: Finished difference Result 61539 states and 92049 transitions. [2021-11-07 13:20:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:20:07,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-11-07 13:20:07,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:07,491 INFO L225 Difference]: With dead ends: 61539 [2021-11-07 13:20:07,491 INFO L226 Difference]: Without dead ends: 38630 [2021-11-07 13:20:07,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:07,533 INFO L933 BasicCegarLoop]: 6757 mSDtfsCounter, 3913 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3913 SdHoareTripleChecker+Valid, 11806 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.69ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.30ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:07,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3913 Valid, 11806 Invalid, 35 Unknown, 0 Unchecked, 12.69ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 154.30ms Time] [2021-11-07 13:20:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38630 states. [2021-11-07 13:20:08,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38630 to 38547. [2021-11-07 13:20:08,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38547 states, 38546 states have (on average 1.4956415711098427) internal successors, (57651), 38546 states have internal predecessors, (57651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38547 states to 38547 states and 57651 transitions. [2021-11-07 13:20:08,206 INFO L78 Accepts]: Start accepts. Automaton has 38547 states and 57651 transitions. Word has length 168 [2021-11-07 13:20:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:20:08,207 INFO L470 AbstractCegarLoop]: Abstraction has 38547 states and 57651 transitions. [2021-11-07 13:20:08,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:08,207 INFO L276 IsEmpty]: Start isEmpty. Operand 38547 states and 57651 transitions. [2021-11-07 13:20:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-07 13:20:08,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:08,214 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:20:08,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:20:08,215 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1050737221, now seen corresponding path program 1 times [2021-11-07 13:20:08,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:08,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473181511] [2021-11-07 13:20:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:08,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:20:08,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:08,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473181511] [2021-11-07 13:20:08,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473181511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:08,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:08,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:20:08,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705504351] [2021-11-07 13:20:08,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:08,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:20:08,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:08,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:20:08,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:08,503 INFO L87 Difference]: Start difference. First operand 38547 states and 57651 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:09,410 INFO L93 Difference]: Finished difference Result 100357 states and 150189 transitions. [2021-11-07 13:20:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:20:09,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-11-07 13:20:09,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:09,551 INFO L225 Difference]: With dead ends: 100357 [2021-11-07 13:20:09,552 INFO L226 Difference]: Without dead ends: 62056 [2021-11-07 13:20:09,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:09,604 INFO L933 BasicCegarLoop]: 8136 mSDtfsCounter, 3875 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3875 SdHoareTripleChecker+Valid, 13185 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.10ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.60ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:09,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3875 Valid, 13185 Invalid, 35 Unknown, 0 Unchecked, 8.10ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 150.60ms Time] [2021-11-07 13:20:09,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62056 states. [2021-11-07 13:20:10,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62056 to 62027. [2021-11-07 13:20:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62027 states, 62026 states have (on average 1.4959371876309935) internal successors, (92787), 62026 states have internal predecessors, (92787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62027 states to 62027 states and 92787 transitions. [2021-11-07 13:20:10,938 INFO L78 Accepts]: Start accepts. Automaton has 62027 states and 92787 transitions. Word has length 174 [2021-11-07 13:20:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:20:10,938 INFO L470 AbstractCegarLoop]: Abstraction has 62027 states and 92787 transitions. [2021-11-07 13:20:10,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 62027 states and 92787 transitions. [2021-11-07 13:20:10,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-07 13:20:10,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:10,961 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:20:10,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:20:10,962 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:10,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:10,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1403202226, now seen corresponding path program 1 times [2021-11-07 13:20:10,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:10,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177277361] [2021-11-07 13:20:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:10,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 13:20:11,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:11,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177277361] [2021-11-07 13:20:11,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177277361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:11,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:11,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:20:11,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494385348] [2021-11-07 13:20:11,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:11,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:20:11,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:11,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:20:11,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:20:11,605 INFO L87 Difference]: Start difference. First operand 62027 states and 92787 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:15,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:15,194 INFO L93 Difference]: Finished difference Result 304167 states and 455979 transitions. [2021-11-07 13:20:15,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:20:15,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2021-11-07 13:20:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:15,968 INFO L225 Difference]: With dead ends: 304167 [2021-11-07 13:20:15,969 INFO L226 Difference]: Without dead ends: 242386 [2021-11-07 13:20:16,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.59ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:20:16,077 INFO L933 BasicCegarLoop]: 10150 mSDtfsCounter, 14726 mSDsluCounter, 15224 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 598.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14726 SdHoareTripleChecker+Valid, 25374 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.07ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 686.51ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:16,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14726 Valid, 25374 Invalid, 512 Unknown, 0 Unchecked, 55.07ms Time], IncrementalHoareTripleChecker [99 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 686.51ms Time] [2021-11-07 13:20:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242386 states. [2021-11-07 13:20:18,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242386 to 62219. [2021-11-07 13:20:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62219 states, 62218 states have (on average 1.4944067633160822) internal successors, (92979), 62218 states have internal predecessors, (92979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62219 states to 62219 states and 92979 transitions. [2021-11-07 13:20:18,810 INFO L78 Accepts]: Start accepts. Automaton has 62219 states and 92979 transitions. Word has length 221 [2021-11-07 13:20:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:20:18,811 INFO L470 AbstractCegarLoop]: Abstraction has 62219 states and 92979 transitions. [2021-11-07 13:20:18,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 62219 states and 92979 transitions. [2021-11-07 13:20:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-07 13:20:18,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:18,841 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:20:18,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:20:18,842 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:18,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:18,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1344391176, now seen corresponding path program 1 times [2021-11-07 13:20:18,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:18,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262947830] [2021-11-07 13:20:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:18,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 13:20:19,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:19,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262947830] [2021-11-07 13:20:19,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262947830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:19,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:19,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 13:20:19,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458647000] [2021-11-07 13:20:19,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:19,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 13:20:19,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:19,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 13:20:19,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 13:20:19,512 INFO L87 Difference]: Start difference. First operand 62219 states and 92979 transitions. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:26,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:26,861 INFO L93 Difference]: Finished difference Result 303015 states and 454251 transitions. [2021-11-07 13:20:26,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 13:20:26,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2021-11-07 13:20:26,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:27,604 INFO L225 Difference]: With dead ends: 303015 [2021-11-07 13:20:27,605 INFO L226 Difference]: Without dead ends: 241042 [2021-11-07 13:20:27,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 155.29ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-07 13:20:27,708 INFO L933 BasicCegarLoop]: 14889 mSDtfsCounter, 44301 mSDsluCounter, 59090 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1922.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44301 SdHoareTripleChecker+Valid, 73979 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 71.55ms SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2167.54ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:27,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44301 Valid, 73979 Invalid, 2115 Unknown, 0 Unchecked, 71.55ms Time], IncrementalHoareTripleChecker [242 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 2167.54ms Time] [2021-11-07 13:20:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241042 states. [2021-11-07 13:20:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241042 to 62411. [2021-11-07 13:20:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62411 states, 62410 states have (on average 1.49134754045826) internal successors, (93075), 62410 states have internal predecessors, (93075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62411 states to 62411 states and 93075 transitions. [2021-11-07 13:20:31,005 INFO L78 Accepts]: Start accepts. Automaton has 62411 states and 93075 transitions. Word has length 224 [2021-11-07 13:20:31,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:20:31,005 INFO L470 AbstractCegarLoop]: Abstraction has 62411 states and 93075 transitions. [2021-11-07 13:20:31,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand 62411 states and 93075 transitions. [2021-11-07 13:20:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-07 13:20:31,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:31,031 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:20:31,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 13:20:31,031 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:31,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:31,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1682825085, now seen corresponding path program 1 times [2021-11-07 13:20:31,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:31,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638995743] [2021-11-07 13:20:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:31,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:31,873 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:20:31,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:31,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638995743] [2021-11-07 13:20:31,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638995743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:31,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:31,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 13:20:31,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972941834] [2021-11-07 13:20:31,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:31,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 13:20:31,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:31,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 13:20:31,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 13:20:31,875 INFO L87 Difference]: Start difference. First operand 62411 states and 93075 transitions. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:20:35,400 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:20:37,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:20:40,457 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:20:42,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []