./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.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 a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:28:52,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:28:52,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:28:52,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:28:52,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:28:52,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:28:52,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:28:52,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:28:52,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:28:52,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:28:52,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:28:52,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:28:52,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:28:52,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:28:52,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:28:52,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:28:52,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:28:52,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:28:52,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:28:52,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:28:52,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:28:52,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:28:52,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:28:52,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:28:52,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:28:52,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:28:52,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:28:52,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:28:52,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:28:52,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:28:52,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:28:52,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:28:52,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:28:52,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:28:52,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:28:52,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:28:52,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:28:52,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:28:52,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:28:52,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:28:52,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:28:52,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:28:52,230 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:28:52,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:28:52,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:28:52,232 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:28:52,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:28:52,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:28:52,233 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:28:52,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:28:52,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:28:52,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:28:52,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:28:52,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:28:52,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:28:52,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:28:52,235 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:28:52,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:28:52,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:28:52,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:28:52,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:28:52,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:28:52,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:28:52,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:28:52,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:28:52,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:28:52,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:28:52,237 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:28:52,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:28:52,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:28:52,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:28:52,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 [2021-11-06 14:28:52,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:28:52,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:28:52,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:28:52,488 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:28:52,489 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:28:52,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-06 14:28:52,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77e524cdd/ea3034832a35485e9db28c495757686e/FLAGd79afece9 [2021-11-06 14:28:53,234 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:28:53,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-06 14:28:53,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77e524cdd/ea3034832a35485e9db28c495757686e/FLAGd79afece9 [2021-11-06 14:28:53,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77e524cdd/ea3034832a35485e9db28c495757686e [2021-11-06 14:28:53,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:28:53,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:28:53,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:28:53,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:28:53,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:28:53,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:28:53" (1/1) ... [2021-11-06 14:28:53,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64eb43bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:53, skipping insertion in model container [2021-11-06 14:28:53,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:28:53" (1/1) ... [2021-11-06 14:28:53,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:28:53,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:28:54,322 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-11-06 14:28:54,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:28:54,739 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:28:54,869 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-11-06 14:28:55,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:28:55,102 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:28:55,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:55 WrapperNode [2021-11-06 14:28:55,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:28:55,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:28:55,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:28:55,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:28:55,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:55" (1/1) ... [2021-11-06 14:28:55,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:55" (1/1) ... [2021-11-06 14:28:55,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:28:55,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:28:55,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:28:55,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:28:55,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:55" (1/1) ... [2021-11-06 14:28:55,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:55" (1/1) ... [2021-11-06 14:28:55,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:55" (1/1) ... [2021-11-06 14:28:55,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:55" (1/1) ... [2021-11-06 14:28:55,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:55" (1/1) ... [2021-11-06 14:28:55,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:55" (1/1) ... [2021-11-06 14:28:55,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:55" (1/1) ... [2021-11-06 14:28:55,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:28:55,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:28:55,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:28:55,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:28:55,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:55" (1/1) ... [2021-11-06 14:28:55,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:28:55,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:28:55,724 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 14:28:55,735 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 14:28:55,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:28:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:28:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:28:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:28:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:28:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:28:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:28:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:28:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:28:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:28:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:28:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:28:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:28:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:28:55,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:28:59,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:28:59,468 INFO L299 CfgBuilder]: Removed 1398 assume(true) statements. [2021-11-06 14:28:59,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:28:59 BoogieIcfgContainer [2021-11-06 14:28:59,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:28:59,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:28:59,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:28:59,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:28:59,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:28:53" (1/3) ... [2021-11-06 14:28:59,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22105bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:28:59, skipping insertion in model container [2021-11-06 14:28:59,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:55" (2/3) ... [2021-11-06 14:28:59,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22105bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:28:59, skipping insertion in model container [2021-11-06 14:28:59,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:28:59" (3/3) ... [2021-11-06 14:28:59,478 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-06 14:28:59,482 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:28:59,482 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-06 14:28:59,522 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:28:59,527 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 14:28:59,527 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-06 14:28:59,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 1196 states, 1194 states have (on average 1.4028475711892798) internal successors, (1675), 1195 states have internal predecessors, (1675), 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 14:28:59,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-06 14:28:59,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:59,560 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] [2021-11-06 14:28:59,587 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:28:59,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:59,591 INFO L85 PathProgramCache]: Analyzing trace with hash 124254041, now seen corresponding path program 1 times [2021-11-06 14:28:59,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:59,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150297346] [2021-11-06 14:28:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:59,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:59,982 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 14:28:59,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:59,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150297346] [2021-11-06 14:28:59,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150297346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:28:59,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:28:59,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:28:59,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899881402] [2021-11-06 14:28:59,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:28:59,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:29:00,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:29:00,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:29:00,007 INFO L87 Difference]: Start difference. First operand has 1196 states, 1194 states have (on average 1.4028475711892798) internal successors, (1675), 1195 states have internal predecessors, (1675), 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 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 14:29:00,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:29:00,264 INFO L93 Difference]: Finished difference Result 3547 states and 4973 transitions. [2021-11-06 14:29:00,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:29:00,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2021-11-06 14:29:00,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:29:00,285 INFO L225 Difference]: With dead ends: 3547 [2021-11-06 14:29:00,285 INFO L226 Difference]: Without dead ends: 2314 [2021-11-06 14:29:00,291 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 14:29:00,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-11-06 14:29:00,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2314. [2021-11-06 14:29:00,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2313 states have (on average 1.3398184176394292) internal successors, (3099), 2313 states have internal predecessors, (3099), 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 14:29:00,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3099 transitions. [2021-11-06 14:29:00,391 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3099 transitions. Word has length 20 [2021-11-06 14:29:00,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:29:00,392 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 3099 transitions. [2021-11-06 14:29:00,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 14:29:00,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3099 transitions. [2021-11-06 14:29:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 14:29:00,394 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:29:00,394 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] [2021-11-06 14:29:00,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:29:00,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:29:00,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:29:00,396 INFO L85 PathProgramCache]: Analyzing trace with hash -573068823, now seen corresponding path program 1 times [2021-11-06 14:29:00,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:29:00,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192163434] [2021-11-06 14:29:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:29:00,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:29:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:29:00,492 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 14:29:00,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:29:00,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192163434] [2021-11-06 14:29:00,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192163434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:29:00,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:29:00,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:29:00,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567456381] [2021-11-06 14:29:00,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:29:00,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:29:00,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:29:00,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:29:00,496 INFO L87 Difference]: Start difference. First operand 2314 states and 3099 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 14:29:00,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:29:00,859 INFO L93 Difference]: Finished difference Result 6904 states and 9254 transitions. [2021-11-06 14:29:00,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:29:00,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2021-11-06 14:29:00,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:29:00,876 INFO L225 Difference]: With dead ends: 6904 [2021-11-06 14:29:00,877 INFO L226 Difference]: Without dead ends: 4604 [2021-11-06 14:29:00,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:29:00,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2021-11-06 14:29:00,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 4540. [2021-11-06 14:29:00,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4540 states, 4539 states have (on average 1.3379599030623486) internal successors, (6073), 4539 states have internal predecessors, (6073), 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 14:29:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4540 states to 4540 states and 6073 transitions. [2021-11-06 14:29:01,001 INFO L78 Accepts]: Start accepts. Automaton has 4540 states and 6073 transitions. Word has length 24 [2021-11-06 14:29:01,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:29:01,001 INFO L470 AbstractCegarLoop]: Abstraction has 4540 states and 6073 transitions. [2021-11-06 14:29:01,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 14:29:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4540 states and 6073 transitions. [2021-11-06 14:29:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 14:29:01,009 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:29:01,009 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:29:01,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:29:01,010 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:29:01,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:29:01,010 INFO L85 PathProgramCache]: Analyzing trace with hash 260287450, now seen corresponding path program 1 times [2021-11-06 14:29:01,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:29:01,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713474926] [2021-11-06 14:29:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:29:01,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:29:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:29:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 14:29:01,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:29:01,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713474926] [2021-11-06 14:29:01,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713474926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:29:01,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:29:01,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:29:01,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591930907] [2021-11-06 14:29:01,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:29:01,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:29:01,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:29:01,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:29:01,104 INFO L87 Difference]: Start difference. First operand 4540 states and 6073 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 14:29:01,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:29:01,605 INFO L93 Difference]: Finished difference Result 19720 states and 26309 transitions. [2021-11-06 14:29:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:29:01,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2021-11-06 14:29:01,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:29:01,660 INFO L225 Difference]: With dead ends: 19720 [2021-11-06 14:29:01,660 INFO L226 Difference]: Without dead ends: 15198 [2021-11-06 14:29:01,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:29:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15198 states. [2021-11-06 14:29:01,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15198 to 7736. [2021-11-06 14:29:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7736 states, 7735 states have (on average 1.333678086619263) internal successors, (10316), 7735 states have internal predecessors, (10316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:29:01,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7736 states to 7736 states and 10316 transitions. [2021-11-06 14:29:01,958 INFO L78 Accepts]: Start accepts. Automaton has 7736 states and 10316 transitions. Word has length 63 [2021-11-06 14:29:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:29:01,958 INFO L470 AbstractCegarLoop]: Abstraction has 7736 states and 10316 transitions. [2021-11-06 14:29:01,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 14:29:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 7736 states and 10316 transitions. [2021-11-06 14:29:01,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 14:29:01,966 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:29:01,966 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:29:01,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:29:01,967 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:29:01,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:29:01,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1945592412, now seen corresponding path program 1 times [2021-11-06 14:29:01,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:29:01,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244547878] [2021-11-06 14:29:01,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:29:01,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:29:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:29:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 14:29:02,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:29:02,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244547878] [2021-11-06 14:29:02,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244547878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:29:02,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:29:02,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:29:02,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051143533] [2021-11-06 14:29:02,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:29:02,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:29:02,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:29:02,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:29:02,059 INFO L87 Difference]: Start difference. First operand 7736 states and 10316 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 14:29:02,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:29:02,815 INFO L93 Difference]: Finished difference Result 35700 states and 47532 transitions. [2021-11-06 14:29:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:29:02,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-06 14:29:02,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:29:02,901 INFO L225 Difference]: With dead ends: 35700 [2021-11-06 14:29:02,901 INFO L226 Difference]: Without dead ends: 27982 [2021-11-06 14:29:02,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:29:02,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27982 states. [2021-11-06 14:29:03,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27982 to 15124. [2021-11-06 14:29:03,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15124 states, 15123 states have (on average 1.3321430933015936) internal successors, (20146), 15123 states have internal predecessors, (20146), 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 14:29:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15124 states to 15124 states and 20146 transitions. [2021-11-06 14:29:03,620 INFO L78 Accepts]: Start accepts. Automaton has 15124 states and 20146 transitions. Word has length 64 [2021-11-06 14:29:03,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:29:03,621 INFO L470 AbstractCegarLoop]: Abstraction has 15124 states and 20146 transitions. [2021-11-06 14:29:03,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 14:29:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 15124 states and 20146 transitions. [2021-11-06 14:29:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 14:29:03,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:29:03,630 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:29:03,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:29:03,630 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:29:03,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:29:03,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1296173829, now seen corresponding path program 1 times [2021-11-06 14:29:03,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:29:03,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186578254] [2021-11-06 14:29:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:29:03,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:29:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:29:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 14:29:03,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:29:03,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186578254] [2021-11-06 14:29:03,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186578254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:29:03,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:29:03,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:29:03,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418891860] [2021-11-06 14:29:03,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:29:03,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:29:03,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:29:03,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:29:03,711 INFO L87 Difference]: Start difference. First operand 15124 states and 20146 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 14:29:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:29:05,267 INFO L93 Difference]: Finished difference Result 70372 states and 93614 transitions. [2021-11-06 14:29:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:29:05,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-11-06 14:29:05,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:29:05,414 INFO L225 Difference]: With dead ends: 70372 [2021-11-06 14:29:05,414 INFO L226 Difference]: Without dead ends: 55266 [2021-11-06 14:29:05,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:29:05,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55266 states. [2021-11-06 14:29:06,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55266 to 29588. [2021-11-06 14:29:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29588 states, 29587 states have (on average 1.3307871700408964) internal successors, (39374), 29587 states have internal predecessors, (39374), 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 14:29:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29588 states to 29588 states and 39374 transitions. [2021-11-06 14:29:06,551 INFO L78 Accepts]: Start accepts. Automaton has 29588 states and 39374 transitions. Word has length 65 [2021-11-06 14:29:06,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:29:06,551 INFO L470 AbstractCegarLoop]: Abstraction has 29588 states and 39374 transitions. [2021-11-06 14:29:06,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 14:29:06,552 INFO L276 IsEmpty]: Start isEmpty. Operand 29588 states and 39374 transitions. [2021-11-06 14:29:06,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-06 14:29:06,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:29:06,560 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:29:06,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:29:06,561 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:29:06,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:29:06,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1636642589, now seen corresponding path program 1 times [2021-11-06 14:29:06,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:29:06,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881268975] [2021-11-06 14:29:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:29:06,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:29:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:29:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 14:29:06,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:29:06,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881268975] [2021-11-06 14:29:06,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881268975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:29:06,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:29:06,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:29:06,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241133032] [2021-11-06 14:29:06,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:29:06,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:29:06,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:29:06,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:29:06,632 INFO L87 Difference]: Start difference. First operand 29588 states and 39374 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 14:29:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:29:09,129 INFO L93 Difference]: Finished difference Result 138764 states and 184450 transitions. [2021-11-06 14:29:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:29:09,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-06 14:29:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:29:09,405 INFO L225 Difference]: With dead ends: 138764 [2021-11-06 14:29:09,406 INFO L226 Difference]: Without dead ends: 109194 [2021-11-06 14:29:09,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:29:09,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109194 states. [2021-11-06 14:29:11,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109194 to 57888. [2021-11-06 14:29:11,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57888 states, 57887 states have (on average 1.329452208613333) internal successors, (76958), 57887 states have internal predecessors, (76958), 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 14:29:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57888 states to 57888 states and 76958 transitions. [2021-11-06 14:29:11,793 INFO L78 Accepts]: Start accepts. Automaton has 57888 states and 76958 transitions. Word has length 66 [2021-11-06 14:29:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:29:11,793 INFO L470 AbstractCegarLoop]: Abstraction has 57888 states and 76958 transitions. [2021-11-06 14:29:11,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 14:29:11,794 INFO L276 IsEmpty]: Start isEmpty. Operand 57888 states and 76958 transitions. [2021-11-06 14:29:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 14:29:11,808 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:29:11,808 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:29:11,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:29:11,809 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:29:11,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:29:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash 929253526, now seen corresponding path program 1 times [2021-11-06 14:29:11,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:29:11,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148146030] [2021-11-06 14:29:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:29:11,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:29:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:29:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:29:11,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:29:11,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148146030] [2021-11-06 14:29:11,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148146030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:29:11,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:29:11,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:29:11,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052056573] [2021-11-06 14:29:11,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:29:11,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:29:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:29:11,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:29:11,913 INFO L87 Difference]: Start difference. First operand 57888 states and 76958 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 14:29:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:29:15,566 INFO L93 Difference]: Finished difference Result 196872 states and 261570 transitions. [2021-11-06 14:29:15,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 14:29:15,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 70 [2021-11-06 14:29:15,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:29:15,871 INFO L225 Difference]: With dead ends: 196872 [2021-11-06 14:29:15,871 INFO L226 Difference]: Without dead ends: 139002 [2021-11-06 14:29:15,965 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:29:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139002 states. [2021-11-06 14:29:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139002 to 58048. [2021-11-06 14:29:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58048 states, 58047 states have (on average 1.32854411080676) internal successors, (77118), 58047 states have internal predecessors, (77118), 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 14:29:18,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58048 states to 58048 states and 77118 transitions. [2021-11-06 14:29:18,809 INFO L78 Accepts]: Start accepts. Automaton has 58048 states and 77118 transitions. Word has length 70 [2021-11-06 14:29:18,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:29:18,809 INFO L470 AbstractCegarLoop]: Abstraction has 58048 states and 77118 transitions. [2021-11-06 14:29:18,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 14:29:18,810 INFO L276 IsEmpty]: Start isEmpty. Operand 58048 states and 77118 transitions. [2021-11-06 14:29:18,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 14:29:18,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:29:18,817 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] [2021-11-06 14:29:18,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:29:18,817 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:29:18,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:29:18,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1915905124, now seen corresponding path program 1 times [2021-11-06 14:29:18,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:29:18,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361004251] [2021-11-06 14:29:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:29:18,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:29:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:29:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 14:29:18,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:29:18,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361004251] [2021-11-06 14:29:18,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361004251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:29:18,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:29:18,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:29:18,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669095374] [2021-11-06 14:29:18,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:29:18,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:29:18,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:29:18,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:29:18,916 INFO L87 Difference]: Start difference. First operand 58048 states and 77118 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 14:29:21,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:29:21,599 INFO L93 Difference]: Finished difference Result 137700 states and 183004 transitions. [2021-11-06 14:29:21,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:29:21,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-06 14:29:21,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:29:21,726 INFO L225 Difference]: With dead ends: 137700 [2021-11-06 14:29:21,726 INFO L226 Difference]: Without dead ends: 79670 [2021-11-06 14:29:21,786 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 14:29:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79670 states. [2021-11-06 14:29:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79670 to 68528. [2021-11-06 14:29:24,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68528 states, 68527 states have (on average 1.3343353714594248) internal successors, (91438), 68527 states have internal predecessors, (91438), 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 14:29:24,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68528 states to 68528 states and 91438 transitions. [2021-11-06 14:29:24,292 INFO L78 Accepts]: Start accepts. Automaton has 68528 states and 91438 transitions. Word has length 74 [2021-11-06 14:29:24,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:29:24,292 INFO L470 AbstractCegarLoop]: Abstraction has 68528 states and 91438 transitions. [2021-11-06 14:29:24,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 14:29:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand 68528 states and 91438 transitions. [2021-11-06 14:29:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-06 14:29:24,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:29:24,302 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-06 14:29:24,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:29:24,303 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:29:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:29:24,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2119199959, now seen corresponding path program 1 times [2021-11-06 14:29:24,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:29:24,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821237421] [2021-11-06 14:29:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:29:24,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:29:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:29:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:29:24,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:29:24,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821237421] [2021-11-06 14:29:24,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821237421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:29:24,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:29:24,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:29:24,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220127088] [2021-11-06 14:29:24,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:29:24,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:29:24,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:29:24,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:29:24,409 INFO L87 Difference]: Start difference. First operand 68528 states and 91438 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 14:29:28,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:29:28,192 INFO L93 Difference]: Finished difference Result 181548 states and 243328 transitions. [2021-11-06 14:29:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:29:28,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 220 [2021-11-06 14:29:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:29:28,437 INFO L225 Difference]: With dead ends: 181548 [2021-11-06 14:29:28,438 INFO L226 Difference]: Without dead ends: 113038 [2021-11-06 14:29:28,531 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 14:29:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113038 states. [2021-11-06 14:29:32,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113038 to 113032. [2021-11-06 14:29:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113032 states, 113031 states have (on average 1.3427997628969044) internal successors, (151778), 113031 states have internal predecessors, (151778), 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 14:29:32,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113032 states to 113032 states and 151778 transitions. [2021-11-06 14:29:32,548 INFO L78 Accepts]: Start accepts. Automaton has 113032 states and 151778 transitions. Word has length 220 [2021-11-06 14:29:32,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:29:32,548 INFO L470 AbstractCegarLoop]: Abstraction has 113032 states and 151778 transitions. [2021-11-06 14:29:32,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 14:29:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 113032 states and 151778 transitions. [2021-11-06 14:29:32,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-06 14:29:32,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:29:32,561 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-06 14:29:32,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 14:29:32,562 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:29:32,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:29:32,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1774173655, now seen corresponding path program 1 times [2021-11-06 14:29:32,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:29:32,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439946018] [2021-11-06 14:29:32,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:29:32,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:29:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:29:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 14:29:32,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:29:32,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439946018] [2021-11-06 14:29:32,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439946018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:29:32,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:29:32,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:29:32,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751205425] [2021-11-06 14:29:32,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:29:32,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:29:32,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:29:32,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:29:32,963 INFO L87 Difference]: Start difference. First operand 113032 states and 151778 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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)