./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.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 9b379d3952381ee5f7f20521f33bb132b70e1b6ee6e3a8e84f57aac9987165a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:24:05,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:24:05,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:24:05,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:24:05,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:24:05,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:24:05,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:24:05,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:24:05,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:24:05,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:24:05,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:24:05,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:24:05,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:24:05,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:24:05,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:24:05,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:24:05,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:24:05,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:24:05,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:24:05,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:24:05,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:24:05,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:24:05,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:24:05,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:24:05,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:24:05,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:24:05,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:24:05,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:24:05,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:24:05,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:24:05,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:24:05,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:24:05,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:24:05,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:24:05,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:24:05,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:24:05,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:24:05,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:24:05,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:24:05,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:24:05,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:24:05,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:24:05,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:24:05,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:24:05,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:24:05,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:24:05,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:24:05,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:24:05,283 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:24:05,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:24:05,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:24:05,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:24:05,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:24:05,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:24:05,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:24:05,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:24:05,285 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:24:05,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:24:05,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:24:05,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:24:05,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:24:05,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:24:05,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:24:05,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:24:05,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:24:05,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:24:05,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:24:05,286 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:24:05,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:24:05,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:24:05,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:24:05,287 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b379d3952381ee5f7f20521f33bb132b70e1b6ee6e3a8e84f57aac9987165a8 [2021-11-06 20:24:05,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:24:05,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:24:05,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:24:05,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:24:05,510 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:24:05,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-06 20:24:05,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f2541cd5/091bf0d648204851814503f31acd48e2/FLAGd484e23aa [2021-11-06 20:24:06,418 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:24:06,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-06 20:24:06,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f2541cd5/091bf0d648204851814503f31acd48e2/FLAGd484e23aa [2021-11-06 20:24:06,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f2541cd5/091bf0d648204851814503f31acd48e2 [2021-11-06 20:24:06,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:24:06,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:24:06,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:24:06,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:24:06,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:24:06,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:24:06" (1/1) ... [2021-11-06 20:24:06,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b74ea59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:06, skipping insertion in model container [2021-11-06 20:24:06,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:24:06" (1/1) ... [2021-11-06 20:24:06,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:24:06,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:24:14,332 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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[837847,837860] [2021-11-06 20:24:14,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:24:14,459 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:24:14,901 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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i[837847,837860] [2021-11-06 20:24:14,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:24:15,349 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:24:15,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:15 WrapperNode [2021-11-06 20:24:15,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:24:15,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:24:15,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:24:15,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:24:15,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:15" (1/1) ... [2021-11-06 20:24:15,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:15" (1/1) ... [2021-11-06 20:24:16,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:24:16,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:24:16,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:24:16,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:24:16,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:15" (1/1) ... [2021-11-06 20:24:16,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:15" (1/1) ... [2021-11-06 20:24:17,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:15" (1/1) ... [2021-11-06 20:24:17,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:15" (1/1) ... [2021-11-06 20:24:18,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:15" (1/1) ... [2021-11-06 20:24:18,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:15" (1/1) ... [2021-11-06 20:24:18,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:15" (1/1) ... [2021-11-06 20:24:19,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:24:19,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:24:19,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:24:19,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:24:19,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:15" (1/1) ... [2021-11-06 20:24:19,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:24:19,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:24:19,028 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 20:24:19,043 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 20:24:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_clean_desc3___0 [2021-11-06 20:24:19,053 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_clean_desc3___0 [2021-11-06 20:24:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_probe [2021-11-06 20:24:19,053 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_probe [2021-11-06 20:24:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_poll_controller [2021-11-06 20:24:19,053 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_poll_controller [2021-11-06 20:24:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_suspend [2021-11-06 20:24:19,054 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_suspend [2021-11-06 20:24:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:24:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:24:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_tx_skbufs [2021-11-06 20:24:19,054 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_tx_skbufs [2021-11-06 20:24:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:24:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 20:24:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_suspend [2021-11-06 20:24:19,055 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_suspend [2021-11-06 20:24:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_interrupt [2021-11-06 20:24:19,055 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_interrupt [2021-11-06 20:24:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:24:19,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:24:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:24:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 20:24:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_ethtool_stats [2021-11-06 20:24:19,055 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_ethtool_stats [2021-11-06 20:24:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_init_rx_buffers [2021-11-06 20:24:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_init_rx_buffers [2021-11-06 20:24:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_setup [2021-11-06 20:24:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_setup [2021-11-06 20:24:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:24:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 20:24:19,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 20:24:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:24:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_release [2021-11-06 20:24:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_release [2021-11-06 20:24:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_timeout [2021-11-06 20:24:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_timeout [2021-11-06 20:24:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_init [2021-11-06 20:24:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_init [2021-11-06 20:24:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:24:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_eee_mode [2021-11-06 20:24:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_eee_mode [2021-11-06 20:24:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_remove [2021-11-06 20:24:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_remove [2021-11-06 20:24:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_remove [2021-11-06 20:24:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_remove [2021-11-06 20:24:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dma_interrupt [2021-11-06 20:24:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dma_interrupt [2021-11-06 20:24:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_resume [2021-11-06 20:24:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_resume [2021-11-06 20:24:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:24:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_open [2021-11-06 20:24:19,059 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_open [2021-11-06 20:24:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:24:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:24:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure init_dma_desc_rings [2021-11-06 20:24:19,059 INFO L138 BoogieDeclarations]: Found implementation of procedure init_dma_desc_rings [2021-11-06 20:24:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_hw_features [2021-11-06 20:24:19,059 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_hw_features [2021-11-06 20:24:19,059 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_probe [2021-11-06 20:24:19,060 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_probe [2021-11-06 20:24:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_probe [2021-11-06 20:24:19,060 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_probe [2021-11-06 20:24:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_resume [2021-11-06 20:24:19,060 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_resume [2021-11-06 20:24:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma_desc_resources [2021-11-06 20:24:19,060 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma_desc_resources [2021-11-06 20:24:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_mdio_reset [2021-11-06 20:24:19,061 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_mdio_reset [2021-11-06 20:24:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 20:24:19,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 20:24:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_op_set_eee [2021-11-06 20:24:19,061 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_op_set_eee [2021-11-06 20:24:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 20:24:19,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 20:24:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:24:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:24:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_dma_irq [2021-11-06 20:24:19,062 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_dma_irq [2021-11-06 20:24:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_remove [2021-11-06 20:24:19,062 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_remove [2021-11-06 20:24:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_err [2021-11-06 20:24:19,062 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_err [2021-11-06 20:24:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_getsettings [2021-11-06 20:24:19,062 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_getsettings [2021-11-06 20:24:19,062 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 20:24:19,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 20:24:19,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:24:19,063 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 20:24:19,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 20:24:19,063 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_resume [2021-11-06 20:24:19,063 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_resume [2021-11-06 20:25:54,971 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break: ldv_switch_6_#res := 0; [2021-11-06 20:25:54,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 20:25:54,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 20:25:54,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-06 20:25:54,973 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:25:54,973 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#4: ldv_switch_6_#res := 0; [2021-11-06 20:25:54,973 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#3: ldv_switch_6_#res := 0; [2021-11-06 20:25:54,974 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_6_switch_break#2: ldv_switch_6_#res := 0; [2021-11-06 20:25:54,974 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_5_switch_break#2: ldv_switch_5_#res := 0; [2021-11-06 20:25:54,974 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-06 20:25:54,974 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#3: ldv_switch_4_#res := 0; [2021-11-06 20:25:54,974 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_5_switch_break: ldv_switch_5_#res := 0; [2021-11-06 20:25:54,975 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_8_switch_break#2: ldv_switch_8_#res := 0; [2021-11-06 20:25:54,975 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-06 20:25:54,975 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-06 20:25:54,975 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:25:54,975 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-06 20:25:54,976 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:25:54,977 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-06 20:25:54,977 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_7_switch_break: ldv_switch_7_#res := 0; [2021-11-06 20:25:54,977 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-06 20:25:54,977 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_9_switch_break: ldv_switch_9_#res := 0; [2021-11-06 20:25:54,978 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_8_switch_break: ldv_switch_8_#res := 0; [2021-11-06 20:25:54,978 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 20:25:54,978 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:25:55,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:25:55,090 INFO L299 CfgBuilder]: Removed 10555 assume(true) statements. [2021-11-06 20:25:55,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:25:55 BoogieIcfgContainer [2021-11-06 20:25:55,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:25:55,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:25:55,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:25:55,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:25:55,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:24:06" (1/3) ... [2021-11-06 20:25:55,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368263c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:25:55, skipping insertion in model container [2021-11-06 20:25:55,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:15" (2/3) ... [2021-11-06 20:25:55,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368263c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:25:55, skipping insertion in model container [2021-11-06 20:25:55,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:25:55" (3/3) ... [2021-11-06 20:25:55,111 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-stmicro-stmmac-stmmac.cil.i [2021-11-06 20:25:55,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:25:55,114 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-06 20:25:55,178 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:25:55,182 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 20:25:55,182 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-06 20:25:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 10918 states, 10741 states have (on average 1.3875802997858673) internal successors, (14904), 10755 states have internal predecessors, (14904), 134 states have call successors, (134), 37 states have call predecessors, (134), 37 states have return successors, (134), 132 states have call predecessors, (134), 134 states have call successors, (134) [2021-11-06 20:25:55,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-06 20:25:55,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:25:55,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:55,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 20:25:55,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:25:55,301 INFO L85 PathProgramCache]: Analyzing trace with hash 437795615, now seen corresponding path program 1 times [2021-11-06 20:25:55,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:25:55,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265283794] [2021-11-06 20:25:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:25:55,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:25:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:25:57,093 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 20:25:57,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:25:57,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265283794] [2021-11-06 20:25:57,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265283794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:25:57,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:25:57,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:25:57,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402055758] [2021-11-06 20:25:57,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:25:57,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:25:57,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:25:57,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:25:57,134 INFO L87 Difference]: Start difference. First operand has 10918 states, 10741 states have (on average 1.3875802997858673) internal successors, (14904), 10755 states have internal predecessors, (14904), 134 states have call successors, (134), 37 states have call predecessors, (134), 37 states have return successors, (134), 132 states have call predecessors, (134), 134 states have call successors, (134) Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 20:26:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:26:00,213 INFO L93 Difference]: Finished difference Result 30974 states and 43463 transitions. [2021-11-06 20:26:00,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:26:00,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 254 [2021-11-06 20:26:00,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:26:00,349 INFO L225 Difference]: With dead ends: 30974 [2021-11-06 20:26:00,349 INFO L226 Difference]: Without dead ends: 20264 [2021-11-06 20:26:00,420 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 20:26:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20264 states. [2021-11-06 20:26:00,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20264 to 20264. [2021-11-06 20:26:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20264 states, 19916 states have (on average 1.368849166499297) internal successors, (27262), 19939 states have internal predecessors, (27262), 268 states have call successors, (268), 74 states have call predecessors, (268), 74 states have return successors, (268), 264 states have call predecessors, (268), 268 states have call successors, (268) [2021-11-06 20:26:01,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20264 states to 20264 states and 27798 transitions. [2021-11-06 20:26:01,004 INFO L78 Accepts]: Start accepts. Automaton has 20264 states and 27798 transitions. Word has length 254 [2021-11-06 20:26:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:26:01,008 INFO L470 AbstractCegarLoop]: Abstraction has 20264 states and 27798 transitions. [2021-11-06 20:26:01,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 20:26:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 20264 states and 27798 transitions. [2021-11-06 20:26:01,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-06 20:26:01,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:26:01,028 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:01,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:26:01,029 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 20:26:01,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:26:01,031 INFO L85 PathProgramCache]: Analyzing trace with hash 451016559, now seen corresponding path program 1 times [2021-11-06 20:26:01,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:26:01,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039802371] [2021-11-06 20:26:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:26:01,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:26:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:26:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:26:02,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:26:02,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039802371] [2021-11-06 20:26:02,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039802371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:26:02,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:26:02,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:26:02,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151892884] [2021-11-06 20:26:02,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:26:02,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:26:02,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:26:02,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:26:02,041 INFO L87 Difference]: Start difference. First operand 20264 states and 27798 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 20:26:04,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:26:04,966 INFO L93 Difference]: Finished difference Result 39882 states and 54885 transitions. [2021-11-06 20:26:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:26:04,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 290 [2021-11-06 20:26:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:26:05,127 INFO L225 Difference]: With dead ends: 39882 [2021-11-06 20:26:05,128 INFO L226 Difference]: Without dead ends: 30017 [2021-11-06 20:26:05,181 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 20:26:05,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30017 states. [2021-11-06 20:26:05,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30017 to 30017. [2021-11-06 20:26:05,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30017 states, 29498 states have (on average 1.3717540172215066) internal successors, (40464), 29530 states have internal predecessors, (40464), 402 states have call successors, (402), 111 states have call predecessors, (402), 111 states have return successors, (402), 396 states have call predecessors, (402), 402 states have call successors, (402) [2021-11-06 20:26:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30017 states to 30017 states and 41268 transitions. [2021-11-06 20:26:05,814 INFO L78 Accepts]: Start accepts. Automaton has 30017 states and 41268 transitions. Word has length 290 [2021-11-06 20:26:05,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:26:05,815 INFO L470 AbstractCegarLoop]: Abstraction has 30017 states and 41268 transitions. [2021-11-06 20:26:05,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 20:26:05,816 INFO L276 IsEmpty]: Start isEmpty. Operand 30017 states and 41268 transitions. [2021-11-06 20:26:05,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-06 20:26:05,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:26:05,832 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:05,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:26:05,832 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 20:26:05,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:26:05,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1152081137, now seen corresponding path program 1 times [2021-11-06 20:26:05,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:26:05,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374378433] [2021-11-06 20:26:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:26:05,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:26:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:26:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:26:06,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:26:06,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374378433] [2021-11-06 20:26:06,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374378433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:26:06,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:26:06,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:26:06,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554467410] [2021-11-06 20:26:06,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:26:06,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:26:06,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:26:06,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:26:06,802 INFO L87 Difference]: Start difference. First operand 30017 states and 41268 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 20:26:09,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:26:09,933 INFO L93 Difference]: Finished difference Result 59389 states and 81827 transitions. [2021-11-06 20:26:09,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:26:09,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 290 [2021-11-06 20:26:09,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:26:10,109 INFO L225 Difference]: With dead ends: 59389 [2021-11-06 20:26:10,110 INFO L226 Difference]: Without dead ends: 39771 [2021-11-06 20:26:10,192 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 20:26:10,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39771 states. [2021-11-06 20:26:11,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39771 to 39771. [2021-11-06 20:26:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39771 states, 39081 states have (on average 1.3732248407154373) internal successors, (53667), 39122 states have internal predecessors, (53667), 536 states have call successors, (536), 148 states have call predecessors, (536), 148 states have return successors, (536), 528 states have call predecessors, (536), 536 states have call successors, (536) [2021-11-06 20:26:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39771 states to 39771 states and 54739 transitions. [2021-11-06 20:26:11,215 INFO L78 Accepts]: Start accepts. Automaton has 39771 states and 54739 transitions. Word has length 290 [2021-11-06 20:26:11,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:26:11,216 INFO L470 AbstractCegarLoop]: Abstraction has 39771 states and 54739 transitions. [2021-11-06 20:26:11,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 20:26:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 39771 states and 54739 transitions. [2021-11-06 20:26:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-06 20:26:11,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:26:11,244 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:11,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:26:11,244 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 20:26:11,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:26:11,245 INFO L85 PathProgramCache]: Analyzing trace with hash -644569363, now seen corresponding path program 1 times [2021-11-06 20:26:11,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:26:11,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9125087] [2021-11-06 20:26:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:26:11,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:26:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:26:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-06 20:26:12,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:26:12,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9125087] [2021-11-06 20:26:12,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9125087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:26:12,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:26:12,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:26:12,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218433132] [2021-11-06 20:26:12,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:26:12,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:26:12,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:26:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:26:12,483 INFO L87 Difference]: Start difference. First operand 39771 states and 54739 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 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 20:26:13,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:26:13,092 INFO L93 Difference]: Finished difference Result 39771 states and 54739 transitions. [2021-11-06 20:26:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 20:26:13,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 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 305 [2021-11-06 20:26:13,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:26:13,237 INFO L225 Difference]: With dead ends: 39771 [2021-11-06 20:26:13,237 INFO L226 Difference]: Without dead ends: 39765 [2021-11-06 20:26:13,270 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 20:26:13,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39765 states. [2021-11-06 20:26:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39765 to 39765. [2021-11-06 20:26:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39765 states, 39078 states have (on average 1.3731767234761247) internal successors, (53661), 39116 states have internal predecessors, (53661), 536 states have call successors, (536), 148 states have call predecessors, (536), 148 states have return successors, (536), 528 states have call predecessors, (536), 536 states have call successors, (536) [2021-11-06 20:26:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39765 states to 39765 states and 54733 transitions. [2021-11-06 20:26:14,003 INFO L78 Accepts]: Start accepts. Automaton has 39765 states and 54733 transitions. Word has length 305 [2021-11-06 20:26:14,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:26:14,007 INFO L470 AbstractCegarLoop]: Abstraction has 39765 states and 54733 transitions. [2021-11-06 20:26:14,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 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 20:26:14,007 INFO L276 IsEmpty]: Start isEmpty. Operand 39765 states and 54733 transitions. [2021-11-06 20:26:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-06 20:26:14,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:26:14,030 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:14,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:26:14,031 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 20:26:14,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:26:14,031 INFO L85 PathProgramCache]: Analyzing trace with hash -955215056, now seen corresponding path program 1 times [2021-11-06 20:26:14,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:26:14,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721403592] [2021-11-06 20:26:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:26:14,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:26:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:26:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-06 20:26:15,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:26:15,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721403592] [2021-11-06 20:26:15,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721403592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:26:15,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:26:15,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:26:15,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062954849] [2021-11-06 20:26:15,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:26:15,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:26:15,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:26:15,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:26:15,459 INFO L87 Difference]: Start difference. First operand 39765 states and 54733 transitions. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 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 20:26:16,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:26:16,472 INFO L93 Difference]: Finished difference Result 78818 states and 109686 transitions. [2021-11-06 20:26:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 20:26:16,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 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 307 [2021-11-06 20:26:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:26:16,877 INFO L225 Difference]: With dead ends: 78818 [2021-11-06 20:26:16,877 INFO L226 Difference]: Without dead ends: 78777 [2021-11-06 20:26:16,952 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 20:26:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78777 states. [2021-11-06 20:26:18,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78777 to 78633. [2021-11-06 20:26:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78633 states, 77274 states have (on average 1.3758314568936512) internal successors, (106316), 77352 states have internal predecessors, (106316), 1068 states have call successors, (1068), 296 states have call predecessors, (1068), 288 states have return successors, (2080), 1036 states have call predecessors, (2080), 1068 states have call successors, (2080) [2021-11-06 20:26:19,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78633 states to 78633 states and 109464 transitions. [2021-11-06 20:26:19,044 INFO L78 Accepts]: Start accepts. Automaton has 78633 states and 109464 transitions. Word has length 307 [2021-11-06 20:26:19,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:26:19,044 INFO L470 AbstractCegarLoop]: Abstraction has 78633 states and 109464 transitions. [2021-11-06 20:26:19,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 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 20:26:19,045 INFO L276 IsEmpty]: Start isEmpty. Operand 78633 states and 109464 transitions. [2021-11-06 20:26:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-11-06 20:26:19,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:26:19,272 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:19,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:26:19,272 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 20:26:19,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:26:19,273 INFO L85 PathProgramCache]: Analyzing trace with hash -410665261, now seen corresponding path program 1 times [2021-11-06 20:26:19,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:26:19,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076532378] [2021-11-06 20:26:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:26:19,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:26:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:26:20,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-11-06 20:26:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:26:20,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-06 20:26:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:26:20,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-06 20:26:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:26:20,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 20:26:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:26:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 20:26:20,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:26:20,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076532378] [2021-11-06 20:26:20,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076532378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:26:20,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:26:20,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 20:26:20,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96616955] [2021-11-06 20:26:20,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:26:20,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:26:20,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:26:20,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:26:20,876 INFO L87 Difference]: Start difference. First operand 78633 states and 109464 transitions. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 3 states have internal predecessors, (390), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 20:26:56,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:26:56,712 INFO L93 Difference]: Finished difference Result 222320 states and 311292 transitions. [2021-11-06 20:26:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 20:26:56,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 3 states have internal predecessors, (390), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 400 [2021-11-06 20:26:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:26:57,563 INFO L225 Difference]: With dead ends: 222320 [2021-11-06 20:26:57,563 INFO L226 Difference]: Without dead ends: 144331 [2021-11-06 20:26:57,783 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 20:26:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144331 states. [2021-11-06 20:27:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144331 to 138342. [2021-11-06 20:27:01,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138342 states, 135706 states have (on average 1.3759303199563764) internal successors, (186722), 135935 states have internal predecessors, (186722), 1877 states have call successors, (1877), 518 states have call predecessors, (1877), 756 states have return successors, (5081), 2007 states have call predecessors, (5081), 1877 states have call successors, (5081) [2021-11-06 20:27:01,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138342 states to 138342 states and 193680 transitions. [2021-11-06 20:27:01,752 INFO L78 Accepts]: Start accepts. Automaton has 138342 states and 193680 transitions. Word has length 400 [2021-11-06 20:27:01,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:27:01,752 INFO L470 AbstractCegarLoop]: Abstraction has 138342 states and 193680 transitions. [2021-11-06 20:27:01,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 3 states have internal predecessors, (390), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 20:27:01,753 INFO L276 IsEmpty]: Start isEmpty. Operand 138342 states and 193680 transitions. [2021-11-06 20:27:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-11-06 20:27:02,153 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:27:02,153 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:02,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 20:27:02,154 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 20:27:02,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:27:02,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1236560384, now seen corresponding path program 1 times [2021-11-06 20:27:02,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:27:02,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432227861] [2021-11-06 20:27:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:27:02,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:27:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:27:03,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-11-06 20:27:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:27:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-06 20:27:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:27:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-06 20:27:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:27:03,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 20:27:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:27:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 20:27:03,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:27:03,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432227861] [2021-11-06 20:27:03,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432227861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:27:03,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:27:03,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 20:27:03,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590993258] [2021-11-06 20:27:03,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:27:03,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:27:03,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:27:03,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:27:03,501 INFO L87 Difference]: Start difference. First operand 138342 states and 193680 transitions. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 3 states have internal predecessors, (403), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 20:27:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:27:42,206 INFO L93 Difference]: Finished difference Result 403880 states and 566367 transitions. [2021-11-06 20:27:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 20:27:42,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 3 states have internal predecessors, (403), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 413 [2021-11-06 20:27:42,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:27:43,836 INFO L225 Difference]: With dead ends: 403880 [2021-11-06 20:27:43,837 INFO L226 Difference]: Without dead ends: 266182 [2021-11-06 20:27:44,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 20:27:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266182 states.