./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.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 04a4b1f21e140a71b13d0aa3889e8a2db465377126c9603026e75e43052ee15d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 13:52:22,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 13:52:22,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 13:52:22,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 13:52:22,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 13:52:22,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 13:52:22,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 13:52:22,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 13:52:22,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 13:52:22,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 13:52:22,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 13:52:22,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 13:52:22,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 13:52:22,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 13:52:22,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 13:52:22,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 13:52:22,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 13:52:22,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 13:52:22,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 13:52:22,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 13:52:22,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 13:52:22,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 13:52:22,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 13:52:22,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 13:52:22,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 13:52:22,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 13:52:22,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 13:52:22,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 13:52:22,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 13:52:22,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 13:52:22,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 13:52:22,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 13:52:22,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 13:52:22,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 13:52:22,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 13:52:22,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 13:52:22,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 13:52:22,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 13:52:22,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 13:52:22,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 13:52:22,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 13:52:22,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 13:52:22,297 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 13:52:22,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 13:52:22,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 13:52:22,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 13:52:22,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 13:52:22,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 13:52:22,305 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 13:52:22,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 13:52:22,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 13:52:22,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 13:52:22,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 13:52:22,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 13:52:22,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 13:52:22,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 13:52:22,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 13:52:22,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 13:52:22,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 13:52:22,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 13:52:22,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 13:52:22,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:52:22,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 13:52:22,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 13:52:22,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 13:52:22,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 13:52:22,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 13:52:22,308 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 13:52:22,308 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 13:52:22,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 13:52:22,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 13:52:22,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04a4b1f21e140a71b13d0aa3889e8a2db465377126c9603026e75e43052ee15d [2021-11-06 13:52:22,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 13:52:22,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 13:52:22,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 13:52:22,492 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 13:52:22,493 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 13:52:22,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2021-11-06 13:52:22,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066a42c5a/0c145bd455374dc98e08b5f10815e9d5/FLAG401ef50a4 [2021-11-06 13:52:23,179 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 13:52:23,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2021-11-06 13:52:23,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066a42c5a/0c145bd455374dc98e08b5f10815e9d5/FLAG401ef50a4 [2021-11-06 13:52:23,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066a42c5a/0c145bd455374dc98e08b5f10815e9d5 [2021-11-06 13:52:23,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 13:52:23,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 13:52:23,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 13:52:23,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 13:52:23,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 13:52:23,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:52:23" (1/1) ... [2021-11-06 13:52:23,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5aeec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:23, skipping insertion in model container [2021-11-06 13:52:23,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:52:23" (1/1) ... [2021-11-06 13:52:23,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 13:52:23,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 13:52:25,264 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i[386276,386289] [2021-11-06 13:52:25,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:52:25,356 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 13:52:25,900 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i[386276,386289] [2021-11-06 13:52:25,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:52:26,063 INFO L208 MainTranslator]: Completed translation [2021-11-06 13:52:26,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:26 WrapperNode [2021-11-06 13:52:26,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 13:52:26,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 13:52:26,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 13:52:26,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 13:52:26,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:26" (1/1) ... [2021-11-06 13:52:26,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:26" (1/1) ... [2021-11-06 13:52:30,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 13:52:30,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 13:52:30,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 13:52:30,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 13:52:30,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:26" (1/1) ... [2021-11-06 13:52:30,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:26" (1/1) ... [2021-11-06 13:52:30,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:26" (1/1) ... [2021-11-06 13:52:30,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:26" (1/1) ... [2021-11-06 13:52:32,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:26" (1/1) ... [2021-11-06 13:52:33,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:26" (1/1) ... [2021-11-06 13:52:33,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:26" (1/1) ... [2021-11-06 13:52:34,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 13:52:34,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 13:52:34,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 13:52:34,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 13:52:34,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:26" (1/1) ... [2021-11-06 13:52:34,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:52:34,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:52:34,774 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 13:52:34,781 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 13:52:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 13:52:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 13:52:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 13:52:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 13:52:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 13:52:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 13:52:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 13:52:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 13:52:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 13:52:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 13:52:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 13:52:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 13:52:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 13:52:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 13:52:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 13:52:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 13:52:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 13:52:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 13:55:38,050 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 13:55:38,051 INFO L299 CfgBuilder]: Removed 15633 assume(true) statements. [2021-11-06 13:55:38,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:55:38 BoogieIcfgContainer [2021-11-06 13:55:38,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 13:55:38,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 13:55:38,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 13:55:38,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 13:55:38,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 01:52:23" (1/3) ... [2021-11-06 13:55:38,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f20dc06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:55:38, skipping insertion in model container [2021-11-06 13:55:38,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:52:26" (2/3) ... [2021-11-06 13:55:38,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f20dc06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:55:38, skipping insertion in model container [2021-11-06 13:55:38,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:55:38" (3/3) ... [2021-11-06 13:55:38,086 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2021-11-06 13:55:38,090 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 13:55:38,090 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-11-06 13:55:38,185 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 13:55:38,188 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 13:55:38,188 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-11-06 13:55:38,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 42288 states, 42241 states have (on average 1.553064558130726) internal successors, (65603), 42287 states have internal predecessors, (65603), 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 13:55:38,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-06 13:55:38,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:55:38,549 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:55:38,549 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-06 13:55:38,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:55:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1302390943, now seen corresponding path program 1 times [2021-11-06 13:55:38,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:55:38,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567552198] [2021-11-06 13:55:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:55:38,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:55:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:55:39,095 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 13:55:39,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:55:39,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567552198] [2021-11-06 13:55:39,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567552198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:55:39,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:55:39,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:55:39,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418775658] [2021-11-06 13:55:39,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:55:39,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:55:39,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:55:39,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:55:39,174 INFO L87 Difference]: Start difference. First operand has 42288 states, 42241 states have (on average 1.553064558130726) internal successors, (65603), 42287 states have internal predecessors, (65603), 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 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 13:55:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:55:42,235 INFO L93 Difference]: Finished difference Result 84571 states and 131201 transitions. [2021-11-06 13:55:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:55:42,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2021-11-06 13:55:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:55:42,373 INFO L225 Difference]: With dead ends: 84571 [2021-11-06 13:55:42,373 INFO L226 Difference]: Without dead ends: 42282 [2021-11-06 13:55:42,444 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 13:55:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42282 states. [2021-11-06 13:55:43,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42282 to 42282. [2021-11-06 13:55:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42282 states, 42237 states have (on average 1.5513412410919336) internal successors, (65524), 42281 states have internal predecessors, (65524), 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 13:55:43,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42282 states to 42282 states and 65524 transitions. [2021-11-06 13:55:43,813 INFO L78 Accepts]: Start accepts. Automaton has 42282 states and 65524 transitions. Word has length 19 [2021-11-06 13:55:43,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:55:43,813 INFO L470 AbstractCegarLoop]: Abstraction has 42282 states and 65524 transitions. [2021-11-06 13:55:43,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 13:55:43,814 INFO L276 IsEmpty]: Start isEmpty. Operand 42282 states and 65524 transitions. [2021-11-06 13:55:43,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-06 13:55:43,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:55:43,819 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 13:55:43,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 13:55:43,820 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-06 13:55:43,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:55:43,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1719253732, now seen corresponding path program 1 times [2021-11-06 13:55:43,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:55:43,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806157492] [2021-11-06 13:55:43,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:55:43,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:55:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:55:44,033 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 13:55:44,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:55:44,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806157492] [2021-11-06 13:55:44,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806157492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:55:44,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:55:44,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:55:44,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374100853] [2021-11-06 13:55:44,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:55:44,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:55:44,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:55:44,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:55:44,037 INFO L87 Difference]: Start difference. First operand 42282 states and 65524 transitions. 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 13:55:47,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:55:47,062 INFO L93 Difference]: Finished difference Result 42282 states and 65524 transitions. [2021-11-06 13:55:47,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:55:47,063 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 13:55:47,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:55:47,147 INFO L225 Difference]: With dead ends: 42282 [2021-11-06 13:55:47,147 INFO L226 Difference]: Without dead ends: 42280 [2021-11-06 13:55:47,166 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 13:55:47,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42280 states. [2021-11-06 13:55:47,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42280 to 42280. [2021-11-06 13:55:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42280 states, 42236 states have (on average 1.5513306184297755) internal successors, (65522), 42279 states have internal predecessors, (65522), 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 13:55:48,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42280 states to 42280 states and 65522 transitions. [2021-11-06 13:55:48,111 INFO L78 Accepts]: Start accepts. Automaton has 42280 states and 65522 transitions. Word has length 20 [2021-11-06 13:55:48,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:55:48,111 INFO L470 AbstractCegarLoop]: Abstraction has 42280 states and 65522 transitions. [2021-11-06 13:55:48,111 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 13:55:48,112 INFO L276 IsEmpty]: Start isEmpty. Operand 42280 states and 65522 transitions. [2021-11-06 13:55:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-06 13:55:48,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:55:48,113 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] [2021-11-06 13:55:48,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 13:55:48,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-06 13:55:48,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:55:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash -238429776, now seen corresponding path program 1 times [2021-11-06 13:55:48,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:55:48,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143450994] [2021-11-06 13:55:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:55:48,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:55:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:55:48,307 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 13:55:48,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:55:48,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143450994] [2021-11-06 13:55:48,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143450994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:55:48,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:55:48,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:55:48,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107492150] [2021-11-06 13:55:48,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:55:48,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:55:48,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:55:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:55:48,313 INFO L87 Difference]: Start difference. First operand 42280 states and 65522 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 13:55:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:55:49,702 INFO L93 Difference]: Finished difference Result 100759 states and 156145 transitions. [2021-11-06 13:55:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:55:49,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-11-06 13:55:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:55:49,830 INFO L225 Difference]: With dead ends: 100759 [2021-11-06 13:55:49,830 INFO L226 Difference]: Without dead ends: 58482 [2021-11-06 13:55:49,892 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 13:55:49,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58482 states. [2021-11-06 13:55:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58482 to 58283. [2021-11-06 13:55:50,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58283 states, 58239 states have (on average 1.5510740225622006) internal successors, (90333), 58282 states have internal predecessors, (90333), 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 13:55:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58283 states to 58283 states and 90333 transitions. [2021-11-06 13:55:51,086 INFO L78 Accepts]: Start accepts. Automaton has 58283 states and 90333 transitions. Word has length 21 [2021-11-06 13:55:51,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:55:51,086 INFO L470 AbstractCegarLoop]: Abstraction has 58283 states and 90333 transitions. [2021-11-06 13:55:51,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 13:55:51,087 INFO L276 IsEmpty]: Start isEmpty. Operand 58283 states and 90333 transitions. [2021-11-06 13:55:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-06 13:55:51,087 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:55:51,088 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] [2021-11-06 13:55:51,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 13:55:51,088 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-06 13:55:51,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:55:51,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1757098293, now seen corresponding path program 1 times [2021-11-06 13:55:51,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:55:51,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990540846] [2021-11-06 13:55:51,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:55:51,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:55:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:55:51,288 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 13:55:51,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:55:51,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990540846] [2021-11-06 13:55:51,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990540846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:55:51,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:55:51,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:55:51,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92188074] [2021-11-06 13:55:51,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:55:51,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:55:51,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:55:51,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:55:51,293 INFO L87 Difference]: Start difference. First operand 58283 states and 90333 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 13:55:54,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:55:54,119 INFO L93 Difference]: Finished difference Result 58283 states and 90333 transitions. [2021-11-06 13:55:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:55:54,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-11-06 13:55:54,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:55:54,219 INFO L225 Difference]: With dead ends: 58283 [2021-11-06 13:55:54,220 INFO L226 Difference]: Without dead ends: 58281 [2021-11-06 13:55:54,241 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 13:55:54,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58281 states. [2021-11-06 13:55:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58281 to 58281. [2021-11-06 13:55:55,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58281 states, 58238 states have (on average 1.5510663140904564) internal successors, (90331), 58280 states have internal predecessors, (90331), 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 13:55:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58281 states to 58281 states and 90331 transitions. [2021-11-06 13:55:55,301 INFO L78 Accepts]: Start accepts. Automaton has 58281 states and 90331 transitions. Word has length 21 [2021-11-06 13:55:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:55:55,301 INFO L470 AbstractCegarLoop]: Abstraction has 58281 states and 90331 transitions. [2021-11-06 13:55:55,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 13:55:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 58281 states and 90331 transitions. [2021-11-06 13:55:55,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-06 13:55:55,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:55:55,303 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] [2021-11-06 13:55:55,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 13:55:55,303 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-06 13:55:55,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:55:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1364687622, now seen corresponding path program 1 times [2021-11-06 13:55:55,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:55:55,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561298767] [2021-11-06 13:55:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:55:55,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:55:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:55:55,720 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 13:55:55,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:55:55,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561298767] [2021-11-06 13:55:55,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561298767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:55:55,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:55:55,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:55:55,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747464469] [2021-11-06 13:55:55,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:55:55,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:55:55,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:55:55,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:55:55,723 INFO L87 Difference]: Start difference. First operand 58281 states and 90331 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 13:55:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:55:58,704 INFO L93 Difference]: Finished difference Result 58281 states and 90331 transitions. [2021-11-06 13:55:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:55:58,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-11-06 13:55:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:55:58,787 INFO L225 Difference]: With dead ends: 58281 [2021-11-06 13:55:58,787 INFO L226 Difference]: Without dead ends: 58042 [2021-11-06 13:55:58,798 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 13:55:58,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58042 states. [2021-11-06 13:55:59,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58042 to 58042. [2021-11-06 13:55:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58042 states, 58021 states have (on average 1.551076334430637) internal successors, (89995), 58041 states have internal predecessors, (89995), 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 13:55:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58042 states to 58042 states and 89995 transitions. [2021-11-06 13:55:59,754 INFO L78 Accepts]: Start accepts. Automaton has 58042 states and 89995 transitions. Word has length 22 [2021-11-06 13:55:59,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:55:59,754 INFO L470 AbstractCegarLoop]: Abstraction has 58042 states and 89995 transitions. [2021-11-06 13:55:59,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 13:55:59,754 INFO L276 IsEmpty]: Start isEmpty. Operand 58042 states and 89995 transitions. [2021-11-06 13:55:59,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 13:55:59,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:55:59,763 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] [2021-11-06 13:55:59,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 13:55:59,764 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-06 13:55:59,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:55:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2105799612, now seen corresponding path program 1 times [2021-11-06 13:55:59,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:55:59,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135325321] [2021-11-06 13:55:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:55:59,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:55:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:55:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:55:59,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:55:59,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135325321] [2021-11-06 13:55:59,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135325321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:55:59,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:55:59,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:55:59,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059739309] [2021-11-06 13:55:59,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:55:59,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:55:59,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:55:59,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:55:59,960 INFO L87 Difference]: Start difference. First operand 58042 states and 89995 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 13:56:03,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:56:03,940 INFO L93 Difference]: Finished difference Result 132206 states and 205040 transitions. [2021-11-06 13:56:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:56:03,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-06 13:56:03,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:56:04,055 INFO L225 Difference]: With dead ends: 132206 [2021-11-06 13:56:04,056 INFO L226 Difference]: Without dead ends: 74167 [2021-11-06 13:56:04,108 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 13:56:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74167 states. [2021-11-06 13:56:05,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74167 to 74167. [2021-11-06 13:56:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74167 states, 74146 states have (on average 1.5503466134383515) internal successors, (114952), 74166 states have internal predecessors, (114952), 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 13:56:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74167 states to 74167 states and 114952 transitions. [2021-11-06 13:56:05,245 INFO L78 Accepts]: Start accepts. Automaton has 74167 states and 114952 transitions. Word has length 51 [2021-11-06 13:56:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:56:05,245 INFO L470 AbstractCegarLoop]: Abstraction has 74167 states and 114952 transitions. [2021-11-06 13:56:05,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 13:56:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 74167 states and 114952 transitions. [2021-11-06 13:56:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-06 13:56:05,250 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:56:05,250 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] [2021-11-06 13:56:05,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 13:56:05,251 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-06 13:56:05,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:56:05,251 INFO L85 PathProgramCache]: Analyzing trace with hash 423789212, now seen corresponding path program 1 times [2021-11-06 13:56:05,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:56:05,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673043734] [2021-11-06 13:56:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:56:05,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:56:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:56:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 13:56:05,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:56:05,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673043734] [2021-11-06 13:56:05,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673043734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:56:05,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:56:05,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 13:56:05,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006729210] [2021-11-06 13:56:05,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:56:05,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:56:05,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:56:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:56:05,456 INFO L87 Difference]: Start difference. First operand 74167 states and 114952 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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 13:56:07,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:56:07,666 INFO L93 Difference]: Finished difference Result 147775 states and 229057 transitions. [2021-11-06 13:56:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:56:07,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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 52 [2021-11-06 13:56:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:56:07,780 INFO L225 Difference]: With dead ends: 147775 [2021-11-06 13:56:07,780 INFO L226 Difference]: Without dead ends: 73611 [2021-11-06 13:56:07,836 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 13:56:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73611 states. [2021-11-06 13:56:09,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73611 to 73611. [2021-11-06 13:56:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73611 states, 73590 states have (on average 1.5400597907324365) internal successors, (113333), 73610 states have internal predecessors, (113333), 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 13:56:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73611 states to 73611 states and 113333 transitions. [2021-11-06 13:56:09,171 INFO L78 Accepts]: Start accepts. Automaton has 73611 states and 113333 transitions. Word has length 52 [2021-11-06 13:56:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:56:09,172 INFO L470 AbstractCegarLoop]: Abstraction has 73611 states and 113333 transitions. [2021-11-06 13:56:09,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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 13:56:09,173 INFO L276 IsEmpty]: Start isEmpty. Operand 73611 states and 113333 transitions. [2021-11-06 13:56:09,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-06 13:56:09,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:56:09,177 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] [2021-11-06 13:56:09,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 13:56:09,178 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-06 13:56:09,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:56:09,178 INFO L85 PathProgramCache]: Analyzing trace with hash 642643930, now seen corresponding path program 1 times [2021-11-06 13:56:09,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:56:09,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111146051] [2021-11-06 13:56:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:56:09,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:56:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:56:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 13:56:09,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:56:09,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111146051] [2021-11-06 13:56:09,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111146051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:56:09,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:56:09,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:56:09,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652392456] [2021-11-06 13:56:09,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:56:09,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:56:09,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:56:09,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:56:09,409 INFO L87 Difference]: Start difference. First operand 73611 states and 113333 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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)