./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.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 10bb499b72e5e53415f4b388a6311d98c8f62bfee9e49e4ef36d0afd6a3d07fa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:13:25,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:13:25,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:13:25,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:13:25,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:13:25,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:13:25,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:13:25,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:13:25,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:13:25,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:13:25,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:13:25,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:13:25,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:13:25,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:13:25,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:13:25,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:13:25,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:13:25,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:13:25,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:13:25,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:13:25,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:13:25,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:13:25,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:13:25,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:13:25,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:13:25,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:13:25,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:13:25,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:13:25,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:13:25,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:13:25,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:13:25,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:13:25,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:13:25,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:13:25,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:13:25,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:13:25,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:13:25,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:13:25,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:13:25,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:13:25,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:13:25,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:13:25,263 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:13:25,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:13:25,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:13:25,266 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:13:25,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:13:25,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:13:25,267 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:13:25,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:13:25,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:13:25,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:13:25,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:13:25,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:13:25,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:13:25,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:13:25,269 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:13:25,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:13:25,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:13:25,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:13:25,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:13:25,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:13:25,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:13:25,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:13:25,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:13:25,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:13:25,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:13:25,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:13:25,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:13:25,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:13:25,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:13:25,272 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10bb499b72e5e53415f4b388a6311d98c8f62bfee9e49e4ef36d0afd6a3d07fa [2021-11-06 18:13:25,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:13:25,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:13:25,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:13:25,489 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:13:25,490 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:13:25,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-06 18:13:25,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca2adb8c3/37b6f5c7bc0f44b399cb55291baf874e/FLAG3cd1f8b7b [2021-11-06 18:13:26,131 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:13:26,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-06 18:13:26,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca2adb8c3/37b6f5c7bc0f44b399cb55291baf874e/FLAG3cd1f8b7b [2021-11-06 18:13:26,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca2adb8c3/37b6f5c7bc0f44b399cb55291baf874e [2021-11-06 18:13:26,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:13:26,275 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:13:26,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:13:26,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:13:26,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:13:26,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:13:26" (1/1) ... [2021-11-06 18:13:26,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44184596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:26, skipping insertion in model container [2021-11-06 18:13:26,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:13:26" (1/1) ... [2021-11-06 18:13:26,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:13:26,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:13:29,019 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446625,446638] [2021-11-06 18:13:29,021 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446770,446783] [2021-11-06 18:13:29,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:13:29,084 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:13:29,345 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446625,446638] [2021-11-06 18:13:29,346 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i[446770,446783] [2021-11-06 18:13:29,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:13:29,573 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:13:29,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:29 WrapperNode [2021-11-06 18:13:29,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:13:29,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:13:29,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:13:29,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:13:29,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:29" (1/1) ... [2021-11-06 18:13:29,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:29" (1/1) ... [2021-11-06 18:13:30,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:13:30,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:13:30,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:13:30,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:13:30,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:29" (1/1) ... [2021-11-06 18:13:30,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:29" (1/1) ... [2021-11-06 18:13:30,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:29" (1/1) ... [2021-11-06 18:13:30,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:29" (1/1) ... [2021-11-06 18:13:31,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:29" (1/1) ... [2021-11-06 18:13:32,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:29" (1/1) ... [2021-11-06 18:13:32,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:29" (1/1) ... [2021-11-06 18:13:32,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:13:32,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:13:32,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:13:32,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:13:32,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:29" (1/1) ... [2021-11-06 18:13:32,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:13:32,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:13:32,354 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) [2021-11-06 18:13:32,358 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 [2021-11-06 18:13:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:13:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:13:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:13:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:13:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:13:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:13:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:13:32,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:13:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:13:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:13:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:13:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:13:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:13:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:13:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:14:41,106 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:14:41,107 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:14:41,107 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:14:41,107 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:14:41,108 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:14:41,109 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:14:41,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:14:41,144 INFO L299 CfgBuilder]: Removed 9450 assume(true) statements. [2021-11-06 18:14:41,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:14:41 BoogieIcfgContainer [2021-11-06 18:14:41,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:14:41,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:14:41,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:14:41,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:14:41,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:13:26" (1/3) ... [2021-11-06 18:14:41,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e2b865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:14:41, skipping insertion in model container [2021-11-06 18:14:41,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:13:29" (2/3) ... [2021-11-06 18:14:41,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e2b865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:14:41, skipping insertion in model container [2021-11-06 18:14:41,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:14:41" (3/3) ... [2021-11-06 18:14:41,163 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-micrel-ksz884x.cil.i [2021-11-06 18:14:41,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:14:41,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-06 18:14:41,223 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:14:41,226 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 [2021-11-06 18:14:41,227 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-06 18:14:41,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 8960 states, 8940 states have (on average 1.3436241610738255) internal successors, (12012), 8959 states have internal predecessors, (12012), 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) [2021-11-06 18:14:41,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 18:14:41,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:14:41,335 INFO L513 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] [2021-11-06 18:14:41,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:14:41,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:14:41,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1699671816, now seen corresponding path program 1 times [2021-11-06 18:14:41,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:14:41,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784503687] [2021-11-06 18:14:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:14:41,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:14:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:14:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:14:41,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:14:41,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784503687] [2021-11-06 18:14:41,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784503687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:14:41,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:14:41,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:14:41,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653182913] [2021-11-06 18:14:41,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:14:41,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:14:41,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:14:41,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:14:42,011 INFO L87 Difference]: Start difference. First operand has 8960 states, 8940 states have (on average 1.3436241610738255) internal successors, (12012), 8959 states have internal predecessors, (12012), 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 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-06 18:14:44,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:14:44,813 INFO L93 Difference]: Finished difference Result 24617 states and 33081 transitions. [2021-11-06 18:14:44,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:14:44,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-11-06 18:14:44,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:14:44,879 INFO L225 Difference]: With dead ends: 24617 [2021-11-06 18:14:44,880 INFO L226 Difference]: Without dead ends: 15378 [2021-11-06 18:14:44,903 INFO L786 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 [2021-11-06 18:14:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15378 states. [2021-11-06 18:14:45,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15378 to 14710. [2021-11-06 18:14:45,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14710 states, 14690 states have (on average 1.3294077603812118) internal successors, (19529), 14709 states have internal predecessors, (19529), 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) [2021-11-06 18:14:45,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14710 states to 14710 states and 19529 transitions. [2021-11-06 18:14:45,298 INFO L78 Accepts]: Start accepts. Automaton has 14710 states and 19529 transitions. Word has length 105 [2021-11-06 18:14:45,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:14:45,299 INFO L470 AbstractCegarLoop]: Abstraction has 14710 states and 19529 transitions. [2021-11-06 18:14:45,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-06 18:14:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 14710 states and 19529 transitions. [2021-11-06 18:14:45,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 18:14:45,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:14:45,306 INFO L513 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] [2021-11-06 18:14:45,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:14:45,306 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:14:45,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:14:45,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2080629326, now seen corresponding path program 1 times [2021-11-06 18:14:45,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:14:45,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768472633] [2021-11-06 18:14:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:14:45,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:14:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:14:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:14:45,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:14:45,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768472633] [2021-11-06 18:14:45,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768472633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:14:45,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:14:45,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:14:45,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078190197] [2021-11-06 18:14:45,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:14:45,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:14:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:14:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:14:45,621 INFO L87 Difference]: Start difference. First operand 14710 states and 19529 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-06 18:14:48,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:14:48,301 INFO L93 Difference]: Finished difference Result 41004 states and 54414 transitions. [2021-11-06 18:14:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:14:48,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2021-11-06 18:14:48,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:14:48,382 INFO L225 Difference]: With dead ends: 41004 [2021-11-06 18:14:48,382 INFO L226 Difference]: Without dead ends: 26450 [2021-11-06 18:14:48,412 INFO L786 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 [2021-11-06 18:14:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26450 states. [2021-11-06 18:14:48,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26450 to 25950. [2021-11-06 18:14:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25950 states, 25930 states have (on average 1.3289240262244504) internal successors, (34459), 25949 states have internal predecessors, (34459), 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) [2021-11-06 18:14:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25950 states to 25950 states and 34459 transitions. [2021-11-06 18:14:49,087 INFO L78 Accepts]: Start accepts. Automaton has 25950 states and 34459 transitions. Word has length 110 [2021-11-06 18:14:49,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:14:49,090 INFO L470 AbstractCegarLoop]: Abstraction has 25950 states and 34459 transitions. [2021-11-06 18:14:49,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-06 18:14:49,093 INFO L276 IsEmpty]: Start isEmpty. Operand 25950 states and 34459 transitions. [2021-11-06 18:14:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 18:14:49,101 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:14:49,101 INFO L513 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] [2021-11-06 18:14:49,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:14:49,102 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:14:49,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:14:49,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1721395662, now seen corresponding path program 1 times [2021-11-06 18:14:49,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:14:49,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029822995] [2021-11-06 18:14:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:14:49,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:14:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:14:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:14:49,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:14:49,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029822995] [2021-11-06 18:14:49,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029822995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:14:49,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:14:49,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:14:49,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730156843] [2021-11-06 18:14:49,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:14:49,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:14:49,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:14:49,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:14:49,436 INFO L87 Difference]: Start difference. First operand 25950 states and 34459 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-06 18:14:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:14:52,277 INFO L93 Difference]: Finished difference Result 59522 states and 79063 transitions. [2021-11-06 18:14:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:14:52,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2021-11-06 18:14:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:14:52,358 INFO L225 Difference]: With dead ends: 59522 [2021-11-06 18:14:52,359 INFO L226 Difference]: Without dead ends: 33728 [2021-11-06 18:14:52,414 INFO L786 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 [2021-11-06 18:14:52,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33728 states. [2021-11-06 18:14:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33728 to 33696. [2021-11-06 18:14:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33696 states, 33676 states have (on average 1.3270875400878965) internal successors, (44691), 33695 states have internal predecessors, (44691), 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) [2021-11-06 18:14:53,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33696 states to 33696 states and 44691 transitions. [2021-11-06 18:14:53,271 INFO L78 Accepts]: Start accepts. Automaton has 33696 states and 44691 transitions. Word has length 110 [2021-11-06 18:14:53,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:14:53,271 INFO L470 AbstractCegarLoop]: Abstraction has 33696 states and 44691 transitions. [2021-11-06 18:14:53,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-06 18:14:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 33696 states and 44691 transitions. [2021-11-06 18:14:53,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 18:14:53,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:14:53,277 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:14:53,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:14:53,277 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:14:53,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:14:53,278 INFO L85 PathProgramCache]: Analyzing trace with hash -998040944, now seen corresponding path program 1 times [2021-11-06 18:14:53,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:14:53,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125855537] [2021-11-06 18:14:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:14:53,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:14:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:14:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:14:53,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:14:53,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125855537] [2021-11-06 18:14:53,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125855537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:14:53,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:14:53,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:14:53,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283652174] [2021-11-06 18:14:53,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:14:53,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:14:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:14:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:14:53,774 INFO L87 Difference]: Start difference. First operand 33696 states and 44691 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-11-06 18:14:56,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:14:56,873 INFO L93 Difference]: Finished difference Result 100736 states and 133683 transitions. [2021-11-06 18:14:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:14:56,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2021-11-06 18:14:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:14:57,049 INFO L225 Difference]: With dead ends: 100736 [2021-11-06 18:14:57,049 INFO L226 Difference]: Without dead ends: 67196 [2021-11-06 18:14:57,112 INFO L786 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 [2021-11-06 18:14:57,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67196 states. [2021-11-06 18:14:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67196 to 67108. [2021-11-06 18:14:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67108 states, 67088 states have (on average 1.3277337228714525) internal successors, (89075), 67107 states have internal predecessors, (89075), 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) [2021-11-06 18:14:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67108 states to 67108 states and 89075 transitions. [2021-11-06 18:14:58,341 INFO L78 Accepts]: Start accepts. Automaton has 67108 states and 89075 transitions. Word has length 125 [2021-11-06 18:14:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:14:58,342 INFO L470 AbstractCegarLoop]: Abstraction has 67108 states and 89075 transitions. [2021-11-06 18:14:58,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-11-06 18:14:58,342 INFO L276 IsEmpty]: Start isEmpty. Operand 67108 states and 89075 transitions. [2021-11-06 18:14:58,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 18:14:58,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:14:58,351 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:14:58,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:14:58,352 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:14:58,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:14:58,352 INFO L85 PathProgramCache]: Analyzing trace with hash 452132512, now seen corresponding path program 1 times [2021-11-06 18:14:58,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:14:58,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061570922] [2021-11-06 18:14:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:14:58,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:14:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:14:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 18:14:58,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:14:58,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061570922] [2021-11-06 18:14:58,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061570922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:14:58,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:14:58,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:14:58,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613708133] [2021-11-06 18:14:58,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:14:58,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:14:58,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:14:58,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:14:58,730 INFO L87 Difference]: Start difference. First operand 67108 states and 89075 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2021-11-06 18:15:01,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:15:01,979 INFO L93 Difference]: Finished difference Result 134256 states and 178233 transitions. [2021-11-06 18:15:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:15:01,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 137 [2021-11-06 18:15:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:15:02,122 INFO L225 Difference]: With dead ends: 134256 [2021-11-06 18:15:02,122 INFO L226 Difference]: Without dead ends: 67304 [2021-11-06 18:15:02,219 INFO L786 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 [2021-11-06 18:15:02,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67304 states. [2021-11-06 18:15:03,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67304 to 67304. [2021-11-06 18:15:03,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67304 states, 67284 states have (on average 1.3276410439331787) internal successors, (89329), 67303 states have internal predecessors, (89329), 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) [2021-11-06 18:15:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67304 states to 67304 states and 89329 transitions. [2021-11-06 18:15:03,748 INFO L78 Accepts]: Start accepts. Automaton has 67304 states and 89329 transitions. Word has length 137 [2021-11-06 18:15:03,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:15:03,749 INFO L470 AbstractCegarLoop]: Abstraction has 67304 states and 89329 transitions. [2021-11-06 18:15:03,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2021-11-06 18:15:03,749 INFO L276 IsEmpty]: Start isEmpty. Operand 67304 states and 89329 transitions. [2021-11-06 18:15:03,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-06 18:15:03,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:15:03,757 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:15:03,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:15:03,760 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:15:03,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:15:03,761 INFO L85 PathProgramCache]: Analyzing trace with hash -128987353, now seen corresponding path program 1 times [2021-11-06 18:15:03,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:15:03,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387750483] [2021-11-06 18:15:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:15:03,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:15:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:15:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:15:03,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:15:03,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387750483] [2021-11-06 18:15:03,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387750483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:15:03,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:15:03,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:15:03,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416750312] [2021-11-06 18:15:03,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:15:03,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:15:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:15:03,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:15:03,966 INFO L87 Difference]: Start difference. First operand 67304 states and 89329 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-11-06 18:15:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:15:07,852 INFO L93 Difference]: Finished difference Result 149752 states and 198805 transitions. [2021-11-06 18:15:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:15:07,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2021-11-06 18:15:07,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:15:08,033 INFO L225 Difference]: With dead ends: 149752 [2021-11-06 18:15:08,033 INFO L226 Difference]: Without dead ends: 82800 [2021-11-06 18:15:08,126 INFO L786 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 [2021-11-06 18:15:08,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82800 states. [2021-11-06 18:15:09,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82800 to 82752. [2021-11-06 18:15:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82752 states, 82732 states have (on average 1.3266088091669488) internal successors, (109753), 82751 states have internal predecessors, (109753), 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) [2021-11-06 18:15:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82752 states to 82752 states and 109753 transitions. [2021-11-06 18:15:09,848 INFO L78 Accepts]: Start accepts. Automaton has 82752 states and 109753 transitions. Word has length 142 [2021-11-06 18:15:09,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:15:09,849 INFO L470 AbstractCegarLoop]: Abstraction has 82752 states and 109753 transitions. [2021-11-06 18:15:09,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-11-06 18:15:09,849 INFO L276 IsEmpty]: Start isEmpty. Operand 82752 states and 109753 transitions. [2021-11-06 18:15:09,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-06 18:15:09,858 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:15:09,859 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-06 18:15:09,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:15:09,859 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:15:09,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:15:09,860 INFO L85 PathProgramCache]: Analyzing trace with hash -386897136, now seen corresponding path program 1 times [2021-11-06 18:15:09,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:15:09,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696870176] [2021-11-06 18:15:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:15:09,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:15:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:15:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 18:15:10,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:15:10,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696870176] [2021-11-06 18:15:10,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696870176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:15:10,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:15:10,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:15:10,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494644544] [2021-11-06 18:15:10,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:15:10,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:15:10,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:15:10,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:15:10,275 INFO L87 Difference]: Start difference. First operand 82752 states and 109753 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-06 18:15:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:15:14,997 INFO L93 Difference]: Finished difference Result 246816 states and 327569 transitions. [2021-11-06 18:15:14,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:15:14,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 166 [2021-11-06 18:15:14,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:15:15,342 INFO L225 Difference]: With dead ends: 246816 [2021-11-06 18:15:15,342 INFO L226 Difference]: Without dead ends: 164416 [2021-11-06 18:15:15,636 INFO L786 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 [2021-11-06 18:15:15,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164416 states. [2021-11-06 18:15:18,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164416 to 164376. [2021-11-06 18:15:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164376 states, 164356 states have (on average 1.3273199639806275) internal successors, (218153), 164375 states have internal predecessors, (218153), 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) [2021-11-06 18:15:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164376 states to 164376 states and 218153 transitions. [2021-11-06 18:15:19,363 INFO L78 Accepts]: Start accepts. Automaton has 164376 states and 218153 transitions. Word has length 166 [2021-11-06 18:15:19,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:15:19,364 INFO L470 AbstractCegarLoop]: Abstraction has 164376 states and 218153 transitions. [2021-11-06 18:15:19,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-06 18:15:19,364 INFO L276 IsEmpty]: Start isEmpty. Operand 164376 states and 218153 transitions. [2021-11-06 18:15:19,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-06 18:15:19,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:15:19,379 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-06 18:15:19,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 18:15:19,379 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:15:19,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:15:19,380 INFO L85 PathProgramCache]: Analyzing trace with hash -359831534, now seen corresponding path program 1 times [2021-11-06 18:15:19,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:15:19,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767995922] [2021-11-06 18:15:19,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:15:19,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:15:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:15:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 18:15:19,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:15:19,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767995922] [2021-11-06 18:15:19,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767995922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:15:19,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:15:19,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:15:19,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135887397] [2021-11-06 18:15:19,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:15:19,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:15:19,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:15:19,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:15:19,565 INFO L87 Difference]: Start difference. First operand 164376 states and 218153 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-11-06 18:15:26,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:15:26,432 INFO L93 Difference]: Finished difference Result 410088 states and 544393 transitions. [2021-11-06 18:15:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:15:26,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 166 [2021-11-06 18:15:26,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:15:27,104 INFO L225 Difference]: With dead ends: 410088 [2021-11-06 18:15:27,104 INFO L226 Difference]: Without dead ends: 244922 [2021-11-06 18:15:27,343 INFO L786 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 [2021-11-06 18:15:27,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244922 states.