./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--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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--net--ethernet--atheros--atl1e--atl1e.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 7e5652ce767ff2e1bcbd3f583f8e33ee2c54a0e67349cc7d1c1f8d74e875d01c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 01:27:32,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:27:32,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:27:32,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:27:32,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:27:32,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:27:32,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:27:32,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:27:32,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:27:32,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:27:32,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:27:32,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:27:32,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:27:32,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:27:32,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:27:32,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:27:32,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:27:32,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:27:32,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:27:32,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:27:32,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:27:32,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:27:32,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:27:32,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:27:32,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:27:32,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:27:32,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:27:32,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:27:32,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:27:32,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:27:32,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:27:32,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:27:32,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:27:32,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:27:32,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:27:32,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:27:32,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:27:32,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:27:32,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:27:32,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:27:32,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:27:32,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 01:27:32,283 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:27:32,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:27:32,284 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:27:32,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:27:32,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:27:32,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:27:32,286 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 01:27:32,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:27:32,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:27:32,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:27:32,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:27:32,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:27:32,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:27:32,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:27:32,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:27:32,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:27:32,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:27:32,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 01:27:32,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:27:32,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:27:32,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:27:32,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:27:32,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:27:32,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 01:27:32,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:27:32,291 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 01:27:32,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 01:27:32,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:27:32,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:27:32,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e5652ce767ff2e1bcbd3f583f8e33ee2c54a0e67349cc7d1c1f8d74e875d01c [2021-11-23 01:27:32,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:27:32,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:27:32,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:27:32,593 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:27:32,594 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:27:32,595 INFO L432 ainManager$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--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2021-11-23 01:27:32,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/338d93d0b/9586fe8eb45c43a49bc91fffe728fdbc/FLAGdf89e8d9d [2021-11-23 01:27:33,601 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:27:33,602 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--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2021-11-23 01:27:33,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/338d93d0b/9586fe8eb45c43a49bc91fffe728fdbc/FLAGdf89e8d9d [2021-11-23 01:27:34,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/338d93d0b/9586fe8eb45c43a49bc91fffe728fdbc [2021-11-23 01:27:34,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:27:34,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:27:34,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:27:34,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:27:34,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:27:34,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:27:34" (1/1) ... [2021-11-23 01:27:34,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9ceff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:34, skipping insertion in model container [2021-11-23 01:27:34,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:27:34" (1/1) ... [2021-11-23 01:27:34,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:27:34,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:27:38,147 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--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i[418024,418037] [2021-11-23 01:27:38,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:27:38,297 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:27:38,750 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--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i[418024,418037] [2021-11-23 01:27:38,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:27:39,011 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:27:39,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:39 WrapperNode [2021-11-23 01:27:39,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:27:39,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:27:39,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:27:39,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:27:39,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:39" (1/1) ... [2021-11-23 01:27:39,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:39" (1/1) ... [2021-11-23 01:27:40,924 INFO L137 Inliner]: procedures = 464, calls = 3161, calls flagged for inlining = 1053, calls inlined = 6068, statements flattened = 68788 [2021-11-23 01:27:40,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:27:40,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:27:40,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:27:40,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:27:40,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:39" (1/1) ... [2021-11-23 01:27:40,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:39" (1/1) ... [2021-11-23 01:27:41,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:39" (1/1) ... [2021-11-23 01:27:41,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:39" (1/1) ... [2021-11-23 01:27:42,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:39" (1/1) ... [2021-11-23 01:27:42,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:39" (1/1) ... [2021-11-23 01:27:43,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:39" (1/1) ... [2021-11-23 01:27:43,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:27:43,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:27:43,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:27:43,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:27:43,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:39" (1/1) ... [2021-11-23 01:27:43,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:27:43,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 01:27:43,852 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) [2021-11-23 01:27:43,878 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 [2021-11-23 01:27:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:27:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 01:27:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 01:27:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:27:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:27:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:27:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:27:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 01:27:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:27:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:27:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 01:27:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 01:27:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:27:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:27:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:27:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:27:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:27:44,769 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:27:44,771 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:28:13,074 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:28:13,140 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:28:13,141 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:28:13,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:28:13 BoogieIcfgContainer [2021-11-23 01:28:13,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:28:13,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:28:13,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:28:13,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:28:13,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:27:34" (1/3) ... [2021-11-23 01:28:13,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a51fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:28:13, skipping insertion in model container [2021-11-23 01:28:13,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:27:39" (2/3) ... [2021-11-23 01:28:13,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a51fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:28:13, skipping insertion in model container [2021-11-23 01:28:13,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:28:13" (3/3) ... [2021-11-23 01:28:13,162 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--atl1e--atl1e.ko-entry_point.cil.out.i [2021-11-23 01:28:13,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:28:13,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-23 01:28:13,258 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:28:13,263 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 [2021-11-23 01:28:13,263 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-23 01:28:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 11722 states, 11716 states have (on average 1.342523045407989) internal successors, (15729), 11721 states have internal predecessors, (15729), 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) [2021-11-23 01:28:13,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 01:28:13,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:28:13,442 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] [2021-11-23 01:28:13,443 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:28:13,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:28:13,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1037733959, now seen corresponding path program 1 times [2021-11-23 01:28:13,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:28:13,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548692681] [2021-11-23 01:28:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:28:13,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:28:14,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:28:14,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548692681] [2021-11-23 01:28:14,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548692681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:28:14,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:28:14,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:28:14,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064111886] [2021-11-23 01:28:14,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:28:14,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:28:14,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:28:14,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:28:14,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:28:14,209 INFO L87 Difference]: Start difference. First operand has 11722 states, 11716 states have (on average 1.342523045407989) internal successors, (15729), 11721 states have internal predecessors, (15729), 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 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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) [2021-11-23 01:28:14,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:28:14,579 INFO L93 Difference]: Finished difference Result 23435 states and 31448 transitions. [2021-11-23 01:28:14,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:28:14,581 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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 68 [2021-11-23 01:28:14,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:28:14,652 INFO L225 Difference]: With dead ends: 23435 [2021-11-23 01:28:14,653 INFO L226 Difference]: Without dead ends: 11612 [2021-11-23 01:28:14,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:28:14,691 INFO L933 BasicCegarLoop]: 15697 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15697 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:28:14,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15697 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:28:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11612 states. [2021-11-23 01:28:14,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11612 to 11612. [2021-11-23 01:28:15,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11612 states, 11607 states have (on average 1.3348841216507281) internal successors, (15494), 11611 states have internal predecessors, (15494), 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) [2021-11-23 01:28:15,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11612 states to 11612 states and 15494 transitions. [2021-11-23 01:28:15,047 INFO L78 Accepts]: Start accepts. Automaton has 11612 states and 15494 transitions. Word has length 68 [2021-11-23 01:28:15,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:28:15,048 INFO L470 AbstractCegarLoop]: Abstraction has 11612 states and 15494 transitions. [2021-11-23 01:28:15,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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) [2021-11-23 01:28:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 11612 states and 15494 transitions. [2021-11-23 01:28:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 01:28:15,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:28:15,055 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] [2021-11-23 01:28:15,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:28:15,056 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:28:15,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:28:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash 942478785, now seen corresponding path program 1 times [2021-11-23 01:28:15,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:28:15,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415108787] [2021-11-23 01:28:15,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:28:15,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:15,163 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 01:28:15,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906108548] [2021-11-23 01:28:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:28:15,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:28:15,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 01:28:15,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:28:15,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:28:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:16,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 01:28:16,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:28:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:28:16,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 01:28:16,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:28:16,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415108787] [2021-11-23 01:28:16,550 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 01:28:16,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906108548] [2021-11-23 01:28:16,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906108548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:28:16,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:28:16,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:28:16,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242759276] [2021-11-23 01:28:16,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:28:16,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:28:16,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:28:16,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:28:16,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:28:16,557 INFO L87 Difference]: Start difference. First operand 11612 states and 15494 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-23 01:28:17,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:28:17,731 INFO L93 Difference]: Finished difference Result 31461 states and 42059 transitions. [2021-11-23 01:28:17,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:28:17,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-23 01:28:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:28:17,830 INFO L225 Difference]: With dead ends: 31461 [2021-11-23 01:28:17,831 INFO L226 Difference]: Without dead ends: 19889 [2021-11-23 01:28:17,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:28:17,864 INFO L933 BasicCegarLoop]: 15458 mSDtfsCounter, 11521 mSDsluCounter, 14917 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11521 SdHoareTripleChecker+Valid, 30375 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:28:17,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11521 Valid, 30375 Invalid, 189 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 01:28:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19889 states. [2021-11-23 01:28:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19889 to 19363. [2021-11-23 01:28:18,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19363 states, 19358 states have (on average 1.3342287426387023) internal successors, (25828), 19362 states have internal predecessors, (25828), 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) [2021-11-23 01:28:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19363 states to 19363 states and 25828 transitions. [2021-11-23 01:28:18,465 INFO L78 Accepts]: Start accepts. Automaton has 19363 states and 25828 transitions. Word has length 68 [2021-11-23 01:28:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:28:18,465 INFO L470 AbstractCegarLoop]: Abstraction has 19363 states and 25828 transitions. [2021-11-23 01:28:18,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-23 01:28:18,466 INFO L276 IsEmpty]: Start isEmpty. Operand 19363 states and 25828 transitions. [2021-11-23 01:28:18,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 01:28:18,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:28:18,476 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] [2021-11-23 01:28:18,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 01:28:18,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:28:18,692 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:28:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:28:18,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1231267216, now seen corresponding path program 1 times [2021-11-23 01:28:18,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:28:18,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137528052] [2021-11-23 01:28:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:28:18,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:28:19,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:28:19,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137528052] [2021-11-23 01:28:19,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137528052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:28:19,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:28:19,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:28:19,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380945874] [2021-11-23 01:28:19,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:28:19,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:28:19,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:28:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:28:19,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:28:19,163 INFO L87 Difference]: Start difference. First operand 19363 states and 25828 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-11-23 01:28:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:28:20,195 INFO L93 Difference]: Finished difference Result 55559 states and 74136 transitions. [2021-11-23 01:28:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:28:20,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2021-11-23 01:28:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:28:20,301 INFO L225 Difference]: With dead ends: 55559 [2021-11-23 01:28:20,301 INFO L226 Difference]: Without dead ends: 36236 [2021-11-23 01:28:20,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:28:20,352 INFO L933 BasicCegarLoop]: 15493 mSDtfsCounter, 13851 mSDsluCounter, 15406 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13851 SdHoareTripleChecker+Valid, 30899 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:28:20,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13851 Valid, 30899 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:28:20,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36236 states. [2021-11-23 01:28:21,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36236 to 36230. [2021-11-23 01:28:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36230 states, 36225 states have (on average 1.3346859903381643) internal successors, (48349), 36229 states have internal predecessors, (48349), 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) [2021-11-23 01:28:21,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36230 states to 36230 states and 48349 transitions. [2021-11-23 01:28:21,472 INFO L78 Accepts]: Start accepts. Automaton has 36230 states and 48349 transitions. Word has length 86 [2021-11-23 01:28:21,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:28:21,474 INFO L470 AbstractCegarLoop]: Abstraction has 36230 states and 48349 transitions. [2021-11-23 01:28:21,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-11-23 01:28:21,474 INFO L276 IsEmpty]: Start isEmpty. Operand 36230 states and 48349 transitions. [2021-11-23 01:28:21,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-23 01:28:21,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:28:21,505 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:28:21,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:28:21,505 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:28:21,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:28:21,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1915119106, now seen corresponding path program 1 times [2021-11-23 01:28:21,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:28:21,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246634111] [2021-11-23 01:28:21,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:28:21,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 01:28:21,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:28:21,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246634111] [2021-11-23 01:28:21,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246634111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:28:21,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:28:21,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:28:21,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965179972] [2021-11-23 01:28:21,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:28:21,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:28:21,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:28:21,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:28:21,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:28:21,911 INFO L87 Difference]: Start difference. First operand 36230 states and 48349 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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) [2021-11-23 01:28:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:28:23,448 INFO L93 Difference]: Finished difference Result 68954 states and 92084 transitions. [2021-11-23 01:28:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:28:23,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 129 [2021-11-23 01:28:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:28:23,681 INFO L225 Difference]: With dead ends: 68954 [2021-11-23 01:28:23,682 INFO L226 Difference]: Without dead ends: 68944 [2021-11-23 01:28:23,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:28:23,727 INFO L933 BasicCegarLoop]: 15839 mSDtfsCounter, 14312 mSDsluCounter, 15076 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14312 SdHoareTripleChecker+Valid, 30915 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:28:23,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14312 Valid, 30915 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:28:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68944 states. [2021-11-23 01:28:25,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68944 to 68464. [2021-11-23 01:28:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68464 states, 68459 states have (on average 1.3360843716677135) internal successors, (91467), 68463 states have internal predecessors, (91467), 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) [2021-11-23 01:28:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68464 states to 68464 states and 91467 transitions. [2021-11-23 01:28:25,864 INFO L78 Accepts]: Start accepts. Automaton has 68464 states and 91467 transitions. Word has length 129 [2021-11-23 01:28:25,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:28:25,865 INFO L470 AbstractCegarLoop]: Abstraction has 68464 states and 91467 transitions. [2021-11-23 01:28:25,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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) [2021-11-23 01:28:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 68464 states and 91467 transitions. [2021-11-23 01:28:25,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-23 01:28:25,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:28:25,946 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:28:25,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:28:25,947 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:28:25,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:28:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1474118779, now seen corresponding path program 1 times [2021-11-23 01:28:25,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:28:25,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812093512] [2021-11-23 01:28:25,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:28:25,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 01:28:26,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:28:26,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812093512] [2021-11-23 01:28:26,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812093512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:28:26,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:28:26,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:28:26,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337666746] [2021-11-23 01:28:26,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:28:26,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:28:26,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:28:26,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:28:26,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:28:26,296 INFO L87 Difference]: Start difference. First operand 68464 states and 91467 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2021-11-23 01:28:28,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:28:28,935 INFO L93 Difference]: Finished difference Result 181580 states and 242437 transitions. [2021-11-23 01:28:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:28:28,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 222 [2021-11-23 01:28:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:28:29,400 INFO L225 Difference]: With dead ends: 181580 [2021-11-23 01:28:29,406 INFO L226 Difference]: Without dead ends: 113156 [2021-11-23 01:28:29,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:28:29,558 INFO L933 BasicCegarLoop]: 21031 mSDtfsCounter, 10899 mSDsluCounter, 15397 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10899 SdHoareTripleChecker+Valid, 36428 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 01:28:29,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10899 Valid, 36428 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 01:28:29,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113156 states. [2021-11-23 01:28:32,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113156 to 113138. [2021-11-23 01:28:32,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113138 states, 113133 states have (on average 1.3346680455746776) internal successors, (150995), 113137 states have internal predecessors, (150995), 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) [2021-11-23 01:28:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113138 states to 113138 states and 150995 transitions. [2021-11-23 01:28:33,187 INFO L78 Accepts]: Start accepts. Automaton has 113138 states and 150995 transitions. Word has length 222 [2021-11-23 01:28:33,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:28:33,187 INFO L470 AbstractCegarLoop]: Abstraction has 113138 states and 150995 transitions. [2021-11-23 01:28:33,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2021-11-23 01:28:33,188 INFO L276 IsEmpty]: Start isEmpty. Operand 113138 states and 150995 transitions. [2021-11-23 01:28:33,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-23 01:28:33,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:28:33,310 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:28:33,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:28:33,311 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:28:33,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:28:33,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1043866666, now seen corresponding path program 1 times [2021-11-23 01:28:33,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:28:33,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486419280] [2021-11-23 01:28:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:28:33,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 01:28:33,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:28:33,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486419280] [2021-11-23 01:28:33,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486419280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:28:33,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:28:33,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:28:33,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179548284] [2021-11-23 01:28:33,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:28:33,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:28:33,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:28:33,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:28:33,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:28:33,688 INFO L87 Difference]: Start difference. First operand 113138 states and 150995 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2021-11-23 01:28:36,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:28:36,689 INFO L93 Difference]: Finished difference Result 226236 states and 301944 transitions. [2021-11-23 01:28:36,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:28:36,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 245 [2021-11-23 01:28:36,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:28:36,980 INFO L225 Difference]: With dead ends: 226236 [2021-11-23 01:28:36,980 INFO L226 Difference]: Without dead ends: 113138 [2021-11-23 01:28:37,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:28:37,143 INFO L933 BasicCegarLoop]: 15492 mSDtfsCounter, 15490 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15490 SdHoareTripleChecker+Valid, 15492 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:28:37,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15490 Valid, 15492 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:28:37,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113138 states. [2021-11-23 01:28:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113138 to 113098. [2021-11-23 01:28:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113098 states, 113093 states have (on average 1.3347156764786503) internal successors, (150947), 113097 states have internal predecessors, (150947), 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) [2021-11-23 01:28:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113098 states to 113098 states and 150947 transitions. [2021-11-23 01:28:40,426 INFO L78 Accepts]: Start accepts. Automaton has 113098 states and 150947 transitions. Word has length 245 [2021-11-23 01:28:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:28:40,427 INFO L470 AbstractCegarLoop]: Abstraction has 113098 states and 150947 transitions. [2021-11-23 01:28:40,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2021-11-23 01:28:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 113098 states and 150947 transitions. [2021-11-23 01:28:40,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-23 01:28:40,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:28:40,519 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:28:40,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:28:40,520 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 01:28:40,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:28:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1120258551, now seen corresponding path program 1 times [2021-11-23 01:28:40,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:28:40,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552187955] [2021-11-23 01:28:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:28:40,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:40,960 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 01:28:40,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:28:40,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552187955] [2021-11-23 01:28:40,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552187955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:28:40,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:28:40,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 01:28:40,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329054785] [2021-11-23 01:28:40,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:28:40,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:28:40,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:28:40,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:28:40,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:28:40,963 INFO L87 Difference]: Start difference. First operand 113098 states and 150947 transitions. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 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)