./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.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 a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:02:20,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:02:20,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:02:20,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:02:20,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:02:20,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:02:20,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:02:20,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:02:20,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:02:20,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:02:20,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:02:20,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:02:20,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:02:20,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:02:20,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:02:20,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:02:20,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:02:20,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:02:20,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:02:20,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:02:20,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:02:20,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:02:20,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:02:20,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:02:20,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:02:20,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:02:20,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:02:20,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:02:20,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:02:20,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:02:20,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:02:20,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:02:20,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:02:20,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:02:20,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:02:20,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:02:20,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:02:20,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:02:20,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:02:20,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:02:20,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:02:20,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:02:20,309 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:02:20,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:02:20,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:02:20,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:02:20,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:02:20,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:02:20,314 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:02:20,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:02:20,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:02:20,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:02:20,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:02:20,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:02:20,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:02:20,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:02:20,315 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:02:20,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:02:20,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:02:20,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:02:20,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:02:20,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:02:20,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:02:20,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:02:20,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:02:20,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:02:20,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:02:20,316 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:02:20,316 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:02:20,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:02:20,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:02:20,317 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 [2021-11-06 19:02:20,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:02:20,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:02:20,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:02:20,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:02:20,501 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:02:20,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2021-11-06 19:02:20,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb44762d5/6b703713b6b448be93faaf0eccaca3e1/FLAGae7a813f6 [2021-11-06 19:02:21,155 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:02:21,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2021-11-06 19:02:21,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb44762d5/6b703713b6b448be93faaf0eccaca3e1/FLAGae7a813f6 [2021-11-06 19:02:21,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb44762d5/6b703713b6b448be93faaf0eccaca3e1 [2021-11-06 19:02:21,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:02:21,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:02:21,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:02:21,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:02:21,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:02:21,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:02:21" (1/1) ... [2021-11-06 19:02:21,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357e6166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:21, skipping insertion in model container [2021-11-06 19:02:21,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:02:21" (1/1) ... [2021-11-06 19:02:21,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:02:21,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:02:23,028 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2021-11-06 19:02:23,031 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2021-11-06 19:02:23,031 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2021-11-06 19:02:23,032 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2021-11-06 19:02:23,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:02:23,084 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:02:23,383 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2021-11-06 19:02:23,384 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2021-11-06 19:02:23,384 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2021-11-06 19:02:23,384 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2021-11-06 19:02:23,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:02:23,500 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:02:23,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:23 WrapperNode [2021-11-06 19:02:23,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:02:23,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:02:23,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:02:23,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:02:23,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:23" (1/1) ... [2021-11-06 19:02:23,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:23" (1/1) ... [2021-11-06 19:02:23,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:02:23,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:02:23,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:02:23,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:02:23,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:23" (1/1) ... [2021-11-06 19:02:23,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:23" (1/1) ... [2021-11-06 19:02:23,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:23" (1/1) ... [2021-11-06 19:02:23,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:23" (1/1) ... [2021-11-06 19:02:24,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:23" (1/1) ... [2021-11-06 19:02:24,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:23" (1/1) ... [2021-11-06 19:02:24,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:23" (1/1) ... [2021-11-06 19:02:24,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:02:24,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:02:24,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:02:24,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:02:24,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:23" (1/1) ... [2021-11-06 19:02:24,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:02:24,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:02:24,497 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 19:02:24,503 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 19:02:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:02:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:02:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:02:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:02:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:02:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:02:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:02:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:02:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:02:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:02:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:02:31,307 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:02:31,308 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:02:31,308 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:02:31,308 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:02:31,309 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:02:31,309 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:02:31,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:02:31,332 INFO L299 CfgBuilder]: Removed 4798 assume(true) statements. [2021-11-06 19:02:31,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:02:31 BoogieIcfgContainer [2021-11-06 19:02:31,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:02:31,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:02:31,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:02:31,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:02:31,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:02:21" (1/3) ... [2021-11-06 19:02:31,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d97b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:02:31, skipping insertion in model container [2021-11-06 19:02:31,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:23" (2/3) ... [2021-11-06 19:02:31,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d97b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:02:31, skipping insertion in model container [2021-11-06 19:02:31,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:02:31" (3/3) ... [2021-11-06 19:02:31,342 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2021-11-06 19:02:31,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:02:31,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 130 error locations. [2021-11-06 19:02:31,384 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:02:31,388 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 19:02:31,388 INFO L340 AbstractCegarLoop]: Starting to check reachability of 130 error locations. [2021-11-06 19:02:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 3924 states, 3794 states have (on average 1.3186610437532946) internal successors, (5003), 3923 states have internal predecessors, (5003), 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 19:02:31,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-06 19:02:31,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:31,433 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] [2021-11-06 19:02:31,433 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:31,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1451316066, now seen corresponding path program 1 times [2021-11-06 19:02:31,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:31,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117714124] [2021-11-06 19:02:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:31,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:31,765 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 19:02:31,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:31,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117714124] [2021-11-06 19:02:31,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117714124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:31,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:31,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:31,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963268687] [2021-11-06 19:02:31,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:02:31,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:31,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:02:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:02:31,787 INFO L87 Difference]: Start difference. First operand has 3924 states, 3794 states have (on average 1.3186610437532946) internal successors, (5003), 3923 states have internal predecessors, (5003), 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 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 19:02:32,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:32,652 INFO L93 Difference]: Finished difference Result 11468 states and 14624 transitions. [2021-11-06 19:02:32,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:02:32,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-11-06 19:02:32,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:32,684 INFO L225 Difference]: With dead ends: 11468 [2021-11-06 19:02:32,685 INFO L226 Difference]: Without dead ends: 7213 [2021-11-06 19:02:32,695 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 19:02:32,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7213 states. [2021-11-06 19:02:32,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7213 to 7009. [2021-11-06 19:02:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 6879 states have (on average 1.234481756069196) internal successors, (8492), 7008 states have internal predecessors, (8492), 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 19:02:32,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 8492 transitions. [2021-11-06 19:02:32,990 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 8492 transitions. Word has length 36 [2021-11-06 19:02:32,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:02:32,992 INFO L470 AbstractCegarLoop]: Abstraction has 7009 states and 8492 transitions. [2021-11-06 19:02:32,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 19:02:32,992 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 8492 transitions. [2021-11-06 19:02:32,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 19:02:32,998 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:32,999 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] [2021-11-06 19:02:32,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:02:32,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:33,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:33,001 INFO L85 PathProgramCache]: Analyzing trace with hash 755458116, now seen corresponding path program 1 times [2021-11-06 19:02:33,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:33,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687371113] [2021-11-06 19:02:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:33,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:33,148 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 19:02:33,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:33,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687371113] [2021-11-06 19:02:33,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687371113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:33,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:33,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:33,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988728619] [2021-11-06 19:02:33,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:02:33,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:02:33,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:02:33,153 INFO L87 Difference]: Start difference. First operand 7009 states and 8492 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 19:02:33,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:33,841 INFO L93 Difference]: Finished difference Result 19739 states and 23904 transitions. [2021-11-06 19:02:33,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:02:33,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-06 19:02:33,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:33,883 INFO L225 Difference]: With dead ends: 19739 [2021-11-06 19:02:33,884 INFO L226 Difference]: Without dead ends: 12790 [2021-11-06 19:02:33,898 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 19:02:33,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12790 states. [2021-11-06 19:02:34,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12790 to 12108. [2021-11-06 19:02:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12108 states, 11978 states have (on average 1.2375187844381366) internal successors, (14823), 12107 states have internal predecessors, (14823), 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 19:02:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12108 states to 12108 states and 14823 transitions. [2021-11-06 19:02:34,180 INFO L78 Accepts]: Start accepts. Automaton has 12108 states and 14823 transitions. Word has length 43 [2021-11-06 19:02:34,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:02:34,181 INFO L470 AbstractCegarLoop]: Abstraction has 12108 states and 14823 transitions. [2021-11-06 19:02:34,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 19:02:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 12108 states and 14823 transitions. [2021-11-06 19:02:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 19:02:34,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:34,186 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] [2021-11-06 19:02:34,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:02:34,187 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr118ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:34,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1414052061, now seen corresponding path program 1 times [2021-11-06 19:02:34,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:34,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153790073] [2021-11-06 19:02:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:34,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:34,400 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 19:02:34,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:34,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153790073] [2021-11-06 19:02:34,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153790073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:34,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:34,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:34,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326556817] [2021-11-06 19:02:34,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:02:34,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:34,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:02:34,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:02:34,404 INFO L87 Difference]: Start difference. First operand 12108 states and 14823 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 19:02:35,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:35,081 INFO L93 Difference]: Finished difference Result 32800 states and 40275 transitions. [2021-11-06 19:02:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:02:35,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-06 19:02:35,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:35,134 INFO L225 Difference]: With dead ends: 32800 [2021-11-06 19:02:35,134 INFO L226 Difference]: Without dead ends: 20752 [2021-11-06 19:02:35,156 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 19:02:35,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20752 states. [2021-11-06 19:02:35,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20752 to 20298. [2021-11-06 19:02:35,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20298 states, 20168 states have (on average 1.2455870686235622) internal successors, (25121), 20297 states have internal predecessors, (25121), 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 19:02:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20298 states to 20298 states and 25121 transitions. [2021-11-06 19:02:35,667 INFO L78 Accepts]: Start accepts. Automaton has 20298 states and 25121 transitions. Word has length 43 [2021-11-06 19:02:35,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:02:35,667 INFO L470 AbstractCegarLoop]: Abstraction has 20298 states and 25121 transitions. [2021-11-06 19:02:35,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 19:02:35,668 INFO L276 IsEmpty]: Start isEmpty. Operand 20298 states and 25121 transitions. [2021-11-06 19:02:35,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 19:02:35,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:35,669 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] [2021-11-06 19:02:35,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:02:35,670 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:35,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1725346022, now seen corresponding path program 1 times [2021-11-06 19:02:35,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:35,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541215762] [2021-11-06 19:02:35,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:35,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:35,764 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 19:02:35,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:35,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541215762] [2021-11-06 19:02:35,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541215762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:35,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:35,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:35,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979096926] [2021-11-06 19:02:35,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:02:35,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:35,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:02:35,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:02:35,767 INFO L87 Difference]: Start difference. First operand 20298 states and 25121 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 19:02:36,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:36,767 INFO L93 Difference]: Finished difference Result 37603 states and 46552 transitions. [2021-11-06 19:02:36,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:02:36,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-06 19:02:36,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:36,804 INFO L225 Difference]: With dead ends: 37603 [2021-11-06 19:02:36,804 INFO L226 Difference]: Without dead ends: 17365 [2021-11-06 19:02:36,836 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 19:02:36,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17365 states. [2021-11-06 19:02:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17365 to 17175. [2021-11-06 19:02:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17175 states, 17045 states have (on average 1.2476972719272514) internal successors, (21267), 17174 states have internal predecessors, (21267), 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 19:02:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17175 states to 17175 states and 21267 transitions. [2021-11-06 19:02:37,267 INFO L78 Accepts]: Start accepts. Automaton has 17175 states and 21267 transitions. Word has length 44 [2021-11-06 19:02:37,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:02:37,269 INFO L470 AbstractCegarLoop]: Abstraction has 17175 states and 21267 transitions. [2021-11-06 19:02:37,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 19:02:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 17175 states and 21267 transitions. [2021-11-06 19:02:37,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 19:02:37,270 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:37,271 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] [2021-11-06 19:02:37,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:02:37,271 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:37,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:37,272 INFO L85 PathProgramCache]: Analyzing trace with hash -402761400, now seen corresponding path program 1 times [2021-11-06 19:02:37,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:37,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136423677] [2021-11-06 19:02:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:37,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:37,388 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 19:02:37,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:37,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136423677] [2021-11-06 19:02:37,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136423677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:37,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:37,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:37,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676580270] [2021-11-06 19:02:37,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:02:37,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:02:37,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:02:37,391 INFO L87 Difference]: Start difference. First operand 17175 states and 21267 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 19:02:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:38,730 INFO L93 Difference]: Finished difference Result 41465 states and 51275 transitions. [2021-11-06 19:02:38,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:02:38,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-06 19:02:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:38,775 INFO L225 Difference]: With dead ends: 41465 [2021-11-06 19:02:38,776 INFO L226 Difference]: Without dead ends: 24350 [2021-11-06 19:02:38,809 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 19:02:38,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24350 states. [2021-11-06 19:02:39,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24350 to 23880. [2021-11-06 19:02:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23880 states, 23750 states have (on average 1.2469052631578947) internal successors, (29614), 23879 states have internal predecessors, (29614), 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 19:02:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23880 states to 23880 states and 29614 transitions. [2021-11-06 19:02:39,352 INFO L78 Accepts]: Start accepts. Automaton has 23880 states and 29614 transitions. Word has length 45 [2021-11-06 19:02:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:02:39,352 INFO L470 AbstractCegarLoop]: Abstraction has 23880 states and 29614 transitions. [2021-11-06 19:02:39,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 19:02:39,352 INFO L276 IsEmpty]: Start isEmpty. Operand 23880 states and 29614 transitions. [2021-11-06 19:02:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 19:02:39,353 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:39,353 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:02:39,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:02:39,354 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:39,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:39,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1100337512, now seen corresponding path program 1 times [2021-11-06 19:02:39,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:39,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103233989] [2021-11-06 19:02:39,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:39,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:02:39,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:39,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103233989] [2021-11-06 19:02:39,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103233989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:39,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:39,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:39,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836114040] [2021-11-06 19:02:39,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:02:39,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:39,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:02:39,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:02:39,428 INFO L87 Difference]: Start difference. First operand 23880 states and 29614 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 19:02:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:40,864 INFO L93 Difference]: Finished difference Result 70954 states and 88070 transitions. [2021-11-06 19:02:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:02:40,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-06 19:02:40,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:40,960 INFO L225 Difference]: With dead ends: 70954 [2021-11-06 19:02:40,960 INFO L226 Difference]: Without dead ends: 47176 [2021-11-06 19:02:41,001 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 19:02:41,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47176 states. [2021-11-06 19:02:41,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47176 to 46942. [2021-11-06 19:02:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46942 states, 46812 states have (on average 1.2480133299154064) internal successors, (58422), 46941 states have internal predecessors, (58422), 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 19:02:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46942 states to 46942 states and 58422 transitions. [2021-11-06 19:02:41,960 INFO L78 Accepts]: Start accepts. Automaton has 46942 states and 58422 transitions. Word has length 61 [2021-11-06 19:02:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:02:41,961 INFO L470 AbstractCegarLoop]: Abstraction has 46942 states and 58422 transitions. [2021-11-06 19:02:41,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 19:02:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 46942 states and 58422 transitions. [2021-11-06 19:02:41,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 19:02:41,962 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:41,962 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:02:41,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:02:41,962 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:41,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:41,963 INFO L85 PathProgramCache]: Analyzing trace with hash -842172074, now seen corresponding path program 1 times [2021-11-06 19:02:41,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:41,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488890675] [2021-11-06 19:02:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:41,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:02:42,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:42,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488890675] [2021-11-06 19:02:42,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488890675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:42,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:42,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:42,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316280394] [2021-11-06 19:02:42,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:02:42,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:42,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:02:42,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:02:42,068 INFO L87 Difference]: Start difference. First operand 46942 states and 58422 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 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 19:02:42,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:42,813 INFO L93 Difference]: Finished difference Result 46942 states and 58422 transitions. [2021-11-06 19:02:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:02:42,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 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 61 [2021-11-06 19:02:42,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:42,887 INFO L225 Difference]: With dead ends: 46942 [2021-11-06 19:02:42,888 INFO L226 Difference]: Without dead ends: 46938 [2021-11-06 19:02:42,907 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 19:02:42,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46938 states. [2021-11-06 19:02:43,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46938 to 46938. [2021-11-06 19:02:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46938 states, 46810 states have (on average 1.2479812005981628) internal successors, (58418), 46937 states have internal predecessors, (58418), 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 19:02:43,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46938 states to 46938 states and 58418 transitions. [2021-11-06 19:02:43,813 INFO L78 Accepts]: Start accepts. Automaton has 46938 states and 58418 transitions. Word has length 61 [2021-11-06 19:02:43,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:02:43,813 INFO L470 AbstractCegarLoop]: Abstraction has 46938 states and 58418 transitions. [2021-11-06 19:02:43,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 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 19:02:43,814 INFO L276 IsEmpty]: Start isEmpty. Operand 46938 states and 58418 transitions. [2021-11-06 19:02:43,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 19:02:43,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:43,815 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:02:43,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:02:43,816 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:43,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:43,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1873372423, now seen corresponding path program 1 times [2021-11-06 19:02:43,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:43,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257752739] [2021-11-06 19:02:43,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:43,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:02:43,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:43,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257752739] [2021-11-06 19:02:43,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257752739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:43,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:43,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:43,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687665652] [2021-11-06 19:02:43,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:02:43,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:43,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:02:43,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:02:43,911 INFO L87 Difference]: Start difference. First operand 46938 states and 58418 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 19:02:44,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:44,819 INFO L93 Difference]: Finished difference Result 46938 states and 58418 transitions. [2021-11-06 19:02:44,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:02:44,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-06 19:02:44,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:44,883 INFO L225 Difference]: With dead ends: 46938 [2021-11-06 19:02:44,883 INFO L226 Difference]: Without dead ends: 46934 [2021-11-06 19:02:44,897 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 19:02:44,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46934 states. [2021-11-06 19:02:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46934 to 46934. [2021-11-06 19:02:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46934 states, 46808 states have (on average 1.2479490685352932) internal successors, (58414), 46933 states have internal predecessors, (58414), 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 19:02:46,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46934 states to 46934 states and 58414 transitions. [2021-11-06 19:02:46,015 INFO L78 Accepts]: Start accepts. Automaton has 46934 states and 58414 transitions. Word has length 63 [2021-11-06 19:02:46,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:02:46,016 INFO L470 AbstractCegarLoop]: Abstraction has 46934 states and 58414 transitions. [2021-11-06 19:02:46,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 19:02:46,016 INFO L276 IsEmpty]: Start isEmpty. Operand 46934 states and 58414 transitions. [2021-11-06 19:02:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 19:02:46,017 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:46,017 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:02:46,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:02:46,017 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:46,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:46,018 INFO L85 PathProgramCache]: Analyzing trace with hash -719462116, now seen corresponding path program 1 times [2021-11-06 19:02:46,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:46,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351160561] [2021-11-06 19:02:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:46,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:02:46,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:46,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351160561] [2021-11-06 19:02:46,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351160561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:46,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:46,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:46,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795990898] [2021-11-06 19:02:46,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:02:46,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:46,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:02:46,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:02:46,130 INFO L87 Difference]: Start difference. First operand 46934 states and 58414 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:02:46,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:46,976 INFO L93 Difference]: Finished difference Result 46934 states and 58414 transitions. [2021-11-06 19:02:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:02:46,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-06 19:02:46,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:47,050 INFO L225 Difference]: With dead ends: 46934 [2021-11-06 19:02:47,050 INFO L226 Difference]: Without dead ends: 46930 [2021-11-06 19:02:47,064 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 19:02:47,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46930 states. [2021-11-06 19:02:48,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46930 to 46930. [2021-11-06 19:02:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46930 states, 46806 states have (on average 1.2479169337264453) internal successors, (58410), 46929 states have internal predecessors, (58410), 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 19:02:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46930 states to 46930 states and 58410 transitions. [2021-11-06 19:02:48,301 INFO L78 Accepts]: Start accepts. Automaton has 46930 states and 58410 transitions. Word has length 65 [2021-11-06 19:02:48,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:02:48,301 INFO L470 AbstractCegarLoop]: Abstraction has 46930 states and 58410 transitions. [2021-11-06 19:02:48,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 19:02:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 46930 states and 58410 transitions. [2021-11-06 19:02:48,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 19:02:48,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:48,303 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:02:48,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 19:02:48,303 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:48,304 INFO L85 PathProgramCache]: Analyzing trace with hash 86780863, now seen corresponding path program 1 times [2021-11-06 19:02:48,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:48,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270565400] [2021-11-06 19:02:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:48,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:02:48,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:48,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270565400] [2021-11-06 19:02:48,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270565400] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:48,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:48,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:48,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981082073] [2021-11-06 19:02:48,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:02:48,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:48,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:02:48,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:02:48,477 INFO L87 Difference]: Start difference. First operand 46930 states and 58410 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 19:02:49,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:49,584 INFO L93 Difference]: Finished difference Result 46930 states and 58410 transitions. [2021-11-06 19:02:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:02:49,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 67 [2021-11-06 19:02:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:49,656 INFO L225 Difference]: With dead ends: 46930 [2021-11-06 19:02:49,657 INFO L226 Difference]: Without dead ends: 46926 [2021-11-06 19:02:49,673 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 19:02:49,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46926 states. [2021-11-06 19:02:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46926 to 46926. [2021-11-06 19:02:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46926 states, 46804 states have (on average 1.2478847961712674) internal successors, (58406), 46925 states have internal predecessors, (58406), 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 19:02:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46926 states to 46926 states and 58406 transitions. [2021-11-06 19:02:50,847 INFO L78 Accepts]: Start accepts. Automaton has 46926 states and 58406 transitions. Word has length 67 [2021-11-06 19:02:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:02:50,847 INFO L470 AbstractCegarLoop]: Abstraction has 46926 states and 58406 transitions. [2021-11-06 19:02:50,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 19:02:50,848 INFO L276 IsEmpty]: Start isEmpty. Operand 46926 states and 58406 transitions. [2021-11-06 19:02:50,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 19:02:50,849 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:50,849 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:02:50,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 19:02:50,849 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:50,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1792170722, now seen corresponding path program 1 times [2021-11-06 19:02:50,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:50,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082192153] [2021-11-06 19:02:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:50,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:02:50,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:50,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082192153] [2021-11-06 19:02:50,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082192153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:50,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:50,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:50,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546553962] [2021-11-06 19:02:50,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:02:50,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:50,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:02:50,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:02:50,955 INFO L87 Difference]: Start difference. First operand 46926 states and 58406 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:02:52,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:52,259 INFO L93 Difference]: Finished difference Result 46926 states and 58406 transitions. [2021-11-06 19:02:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:02:52,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 19:02:52,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:52,326 INFO L225 Difference]: With dead ends: 46926 [2021-11-06 19:02:52,327 INFO L226 Difference]: Without dead ends: 46922 [2021-11-06 19:02:52,341 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 19:02:52,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46922 states. [2021-11-06 19:02:53,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46922 to 46922. [2021-11-06 19:02:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46922 states, 46802 states have (on average 1.2478526558694072) internal successors, (58402), 46921 states have internal predecessors, (58402), 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 19:02:53,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46922 states to 46922 states and 58402 transitions. [2021-11-06 19:02:53,445 INFO L78 Accepts]: Start accepts. Automaton has 46922 states and 58402 transitions. Word has length 69 [2021-11-06 19:02:53,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:02:53,445 INFO L470 AbstractCegarLoop]: Abstraction has 46922 states and 58402 transitions. [2021-11-06 19:02:53,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:02:53,445 INFO L276 IsEmpty]: Start isEmpty. Operand 46922 states and 58402 transitions. [2021-11-06 19:02:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 19:02:53,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:53,446 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:02:53,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 19:02:53,447 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:53,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash -5681531, now seen corresponding path program 1 times [2021-11-06 19:02:53,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:53,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135491994] [2021-11-06 19:02:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:53,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:02:53,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:53,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135491994] [2021-11-06 19:02:53,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135491994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:53,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:53,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:53,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267156380] [2021-11-06 19:02:53,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:02:53,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:53,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:02:53,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:02:53,541 INFO L87 Difference]: Start difference. First operand 46922 states and 58402 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:02:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:54,861 INFO L93 Difference]: Finished difference Result 46922 states and 58402 transitions. [2021-11-06 19:02:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:02:54,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-06 19:02:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:54,929 INFO L225 Difference]: With dead ends: 46922 [2021-11-06 19:02:54,929 INFO L226 Difference]: Without dead ends: 46918 [2021-11-06 19:02:54,944 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 19:02:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46918 states. [2021-11-06 19:02:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46918 to 46918. [2021-11-06 19:02:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46918 states, 46800 states have (on average 1.2478205128205129) internal successors, (58398), 46917 states have internal predecessors, (58398), 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 19:02:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46918 states to 46918 states and 58398 transitions. [2021-11-06 19:02:56,182 INFO L78 Accepts]: Start accepts. Automaton has 46918 states and 58398 transitions. Word has length 71 [2021-11-06 19:02:56,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:02:56,183 INFO L470 AbstractCegarLoop]: Abstraction has 46918 states and 58398 transitions. [2021-11-06 19:02:56,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:02:56,183 INFO L276 IsEmpty]: Start isEmpty. Operand 46918 states and 58398 transitions. [2021-11-06 19:02:56,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 19:02:56,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:02:56,184 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:02:56,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 19:02:56,184 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:02:56,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:02:56,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1114278942, now seen corresponding path program 1 times [2021-11-06 19:02:56,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:02:56,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177010662] [2021-11-06 19:02:56,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:02:56,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:02:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:02:56,271 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 19:02:56,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:02:56,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177010662] [2021-11-06 19:02:56,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177010662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:02:56,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:02:56,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:02:56,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426433920] [2021-11-06 19:02:56,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:02:56,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:02:56,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:02:56,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:02:56,274 INFO L87 Difference]: Start difference. First operand 46918 states and 58398 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 19:02:58,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:02:58,759 INFO L93 Difference]: Finished difference Result 107226 states and 133747 transitions. [2021-11-06 19:02:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:02:58,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2021-11-06 19:02:58,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:02:58,866 INFO L225 Difference]: With dead ends: 107226 [2021-11-06 19:02:58,866 INFO L226 Difference]: Without dead ends: 60410 [2021-11-06 19:02:58,924 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 19:02:58,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60410 states. [2021-11-06 19:03:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60410 to 60214. [2021-11-06 19:03:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60214 states, 60096 states have (on average 1.2496339190628327) internal successors, (75098), 60213 states have internal predecessors, (75098), 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 19:03:00,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60214 states to 60214 states and 75098 transitions. [2021-11-06 19:03:00,780 INFO L78 Accepts]: Start accepts. Automaton has 60214 states and 75098 transitions. Word has length 72 [2021-11-06 19:03:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:03:00,780 INFO L470 AbstractCegarLoop]: Abstraction has 60214 states and 75098 transitions. [2021-11-06 19:03:00,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 19:03:00,781 INFO L276 IsEmpty]: Start isEmpty. Operand 60214 states and 75098 transitions. [2021-11-06 19:03:00,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 19:03:00,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:03:00,782 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:03:00,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 19:03:00,782 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 127 more)] === [2021-11-06 19:03:00,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:03:00,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1164843352, now seen corresponding path program 1 times [2021-11-06 19:03:00,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:03:00,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339620423] [2021-11-06 19:03:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:03:00,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:03:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:03:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 19:03:00,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:03:00,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339620423] [2021-11-06 19:03:00,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339620423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:03:00,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:03:00,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:03:00,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693160175] [2021-11-06 19:03:00,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:03:00,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:03:00,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:03:00,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:03:00,879 INFO L87 Difference]: Start difference. First operand 60214 states and 75098 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)