./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.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 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 19:13:56,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 19:13:56,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 19:13:56,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 19:13:56,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 19:13:56,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 19:13:56,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 19:13:56,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 19:13:56,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 19:13:56,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 19:13:56,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 19:13:56,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 19:13:56,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 19:13:56,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 19:13:56,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 19:13:56,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 19:13:56,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 19:13:56,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 19:13:56,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 19:13:56,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 19:13:56,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 19:13:56,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 19:13:56,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 19:13:56,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 19:13:56,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 19:13:56,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 19:13:56,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 19:13:56,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 19:13:56,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 19:13:56,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 19:13:56,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 19:13:56,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 19:13:56,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 19:13:56,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 19:13:56,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 19:13:56,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 19:13:56,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 19:13:56,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 19:13:56,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 19:13:56,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 19:13:56,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 19:13:56,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 19:13:56,351 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 19:13:56,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 19:13:56,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 19:13:56,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 19:13:56,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 19:13:56,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 19:13:56,354 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 19:13:56,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 19:13:56,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 19:13:56,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 19:13:56,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 19:13:56,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 19:13:56,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 19:13:56,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 19:13:56,356 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 19:13:56,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 19:13:56,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 19:13:56,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 19:13:56,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 19:13:56,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:13:56,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 19:13:56,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 19:13:56,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 19:13:56,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 19:13:56,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 19:13:56,358 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 19:13:56,358 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 19:13:56,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 19:13:56,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 19:13:56,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a [2021-11-07 19:13:56,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 19:13:56,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 19:13:56,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 19:13:56,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 19:13:56,600 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 19:13:56,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2021-11-07 19:13:56,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a69346365/448b76c8e79145b5b78617d3eecf7d44/FLAGeca85a58a [2021-11-07 19:13:57,361 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 19:13:57,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2021-11-07 19:13:57,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a69346365/448b76c8e79145b5b78617d3eecf7d44/FLAGeca85a58a [2021-11-07 19:13:57,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a69346365/448b76c8e79145b5b78617d3eecf7d44 [2021-11-07 19:13:57,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 19:13:57,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 19:13:57,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 19:13:57,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 19:13:57,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 19:13:57,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:13:57" (1/1) ... [2021-11-07 19:13:57,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e9ab57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:13:57, skipping insertion in model container [2021-11-07 19:13:57,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:13:57" (1/1) ... [2021-11-07 19:13:57,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 19:13:57,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 19:13:59,844 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2021-11-07 19:13:59,846 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2021-11-07 19:13:59,847 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2021-11-07 19:13:59,847 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2021-11-07 19:13:59,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:13:59,889 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 19:14:00,181 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2021-11-07 19:14:00,182 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2021-11-07 19:14:00,183 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2021-11-07 19:14:00,183 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2021-11-07 19:14:00,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:14:00,344 INFO L208 MainTranslator]: Completed translation [2021-11-07 19:14:00,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:00 WrapperNode [2021-11-07 19:14:00,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 19:14:00,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 19:14:00,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 19:14:00,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 19:14:00,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:00" (1/1) ... [2021-11-07 19:14:00,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:00" (1/1) ... [2021-11-07 19:14:03,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 19:14:03,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 19:14:03,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 19:14:03,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 19:14:03,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:00" (1/1) ... [2021-11-07 19:14:03,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:00" (1/1) ... [2021-11-07 19:14:03,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:00" (1/1) ... [2021-11-07 19:14:03,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:00" (1/1) ... [2021-11-07 19:14:03,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:00" (1/1) ... [2021-11-07 19:14:04,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:00" (1/1) ... [2021-11-07 19:14:04,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:00" (1/1) ... [2021-11-07 19:14:04,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 19:14:04,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 19:14:04,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 19:14:04,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 19:14:04,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:00" (1/1) ... [2021-11-07 19:14:04,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:14:04,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 19:14:04,664 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) [2021-11-07 19:14:04,699 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 [2021-11-07 19:14:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 19:14:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 19:14:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 19:14:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 19:14:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 19:14:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 19:14:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 19:14:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 19:14:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 19:14:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 19:14:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 19:14:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 19:14:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 19:14:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 19:14:04,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 19:14:22,847 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 19:14:22,847 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 19:14:22,847 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 19:14:22,848 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 19:14:22,849 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 19:14:22,851 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 19:14:22,902 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 19:14:22,903 INFO L299 CfgBuilder]: Removed 19124 assume(true) statements. [2021-11-07 19:14:22,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:14:22 BoogieIcfgContainer [2021-11-07 19:14:22,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 19:14:22,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 19:14:22,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 19:14:22,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 19:14:22,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:13:57" (1/3) ... [2021-11-07 19:14:22,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119c1f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:14:22, skipping insertion in model container [2021-11-07 19:14:22,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:00" (2/3) ... [2021-11-07 19:14:22,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119c1f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:14:22, skipping insertion in model container [2021-11-07 19:14:22,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:14:22" (3/3) ... [2021-11-07 19:14:22,924 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2021-11-07 19:14:22,929 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 19:14:22,929 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2021-11-07 19:14:23,008 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 19:14:23,014 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 [2021-11-07 19:14:23,014 INFO L340 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2021-11-07 19:14:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 11769 states, 11703 states have (on average 1.1825173032555756) internal successors, (13839), 11768 states have internal predecessors, (13839), 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) [2021-11-07 19:14:23,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 19:14:23,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:14:23,157 INFO L514 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] [2021-11-07 19:14:23,158 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-07 19:14:23,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:14:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1274386020, now seen corresponding path program 1 times [2021-11-07 19:14:23,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:14:23,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433619934] [2021-11-07 19:14:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:14:23,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:14:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:14:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:14:23,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:14:23,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433619934] [2021-11-07 19:14:23,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433619934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:14:23,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:14:23,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:14:23,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520772361] [2021-11-07 19:14:23,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:14:23,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:14:23,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:14:23,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:14:23,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:23,779 INFO L87 Difference]: Start difference. First operand has 11769 states, 11703 states have (on average 1.1825173032555756) internal successors, (13839), 11768 states have internal predecessors, (13839), 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 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 19:14:25,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:14:26,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:14:26,914 INFO L93 Difference]: Finished difference Result 34710 states and 40737 transitions. [2021-11-07 19:14:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:14:26,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-07 19:14:26,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:14:27,037 INFO L225 Difference]: With dead ends: 34710 [2021-11-07 19:14:27,038 INFO L226 Difference]: Without dead ends: 22751 [2021-11-07 19:14:27,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:27,080 INFO L933 BasicCegarLoop]: 13731 mSDtfsCounter, 13219 mSDsluCounter, 13569 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2117.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13219 SdHoareTripleChecker+Valid, 27300 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.87ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2237.44ms IncrementalHoareTripleChecker+Time [2021-11-07 19:14:27,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13219 Valid, 27300 Invalid, 44 Unknown, 0 Unchecked, 65.87ms Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 2237.44ms Time] [2021-11-07 19:14:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22751 states. [2021-11-07 19:14:27,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22751 to 22235. [2021-11-07 19:14:27,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22235 states, 22169 states have (on average 1.161712300960801) internal successors, (25754), 22234 states have internal predecessors, (25754), 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) [2021-11-07 19:14:27,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22235 states to 22235 states and 25754 transitions. [2021-11-07 19:14:27,998 INFO L78 Accepts]: Start accepts. Automaton has 22235 states and 25754 transitions. Word has length 42 [2021-11-07 19:14:27,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:14:27,998 INFO L470 AbstractCegarLoop]: Abstraction has 22235 states and 25754 transitions. [2021-11-07 19:14:27,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 19:14:28,000 INFO L276 IsEmpty]: Start isEmpty. Operand 22235 states and 25754 transitions. [2021-11-07 19:14:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 19:14:28,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:14:28,008 INFO L514 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] [2021-11-07 19:14:28,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 19:14:28,009 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-07 19:14:28,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:14:28,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1532558275, now seen corresponding path program 1 times [2021-11-07 19:14:28,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:14:28,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708816006] [2021-11-07 19:14:28,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:14:28,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:14:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:14:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:14:28,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:14:28,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708816006] [2021-11-07 19:14:28,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708816006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:14:28,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:14:28,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:14:28,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315963307] [2021-11-07 19:14:28,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:14:28,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:14:28,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:14:28,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:14:28,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:28,211 INFO L87 Difference]: Start difference. First operand 22235 states and 25754 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) [2021-11-07 19:14:30,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:14:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:14:31,593 INFO L93 Difference]: Finished difference Result 66291 states and 76801 transitions. [2021-11-07 19:14:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:14:31,593 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 [2021-11-07 19:14:31,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:14:31,750 INFO L225 Difference]: With dead ends: 66291 [2021-11-07 19:14:31,752 INFO L226 Difference]: Without dead ends: 44124 [2021-11-07 19:14:31,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:31,808 INFO L933 BasicCegarLoop]: 13430 mSDtfsCounter, 13158 mSDsluCounter, 13364 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2070.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13158 SdHoareTripleChecker+Valid, 26794 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.66ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2165.78ms IncrementalHoareTripleChecker+Time [2021-11-07 19:14:31,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13158 Valid, 26794 Invalid, 34 Unknown, 0 Unchecked, 47.66ms Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2165.78ms Time] [2021-11-07 19:14:31,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44124 states. [2021-11-07 19:14:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44124 to 44070. [2021-11-07 19:14:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44070 states, 44004 states have (on average 1.1608944641396237) internal successors, (51084), 44069 states have internal predecessors, (51084), 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) [2021-11-07 19:14:33,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44070 states to 44070 states and 51084 transitions. [2021-11-07 19:14:33,185 INFO L78 Accepts]: Start accepts. Automaton has 44070 states and 51084 transitions. Word has length 43 [2021-11-07 19:14:33,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:14:33,190 INFO L470 AbstractCegarLoop]: Abstraction has 44070 states and 51084 transitions. [2021-11-07 19:14:33,191 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) [2021-11-07 19:14:33,191 INFO L276 IsEmpty]: Start isEmpty. Operand 44070 states and 51084 transitions. [2021-11-07 19:14:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 19:14:33,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:14:33,194 INFO L514 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] [2021-11-07 19:14:33,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 19:14:33,194 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-07 19:14:33,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:14:33,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1662480865, now seen corresponding path program 1 times [2021-11-07 19:14:33,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:14:33,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774310350] [2021-11-07 19:14:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:14:33,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:14:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:14:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:14:33,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:14:33,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774310350] [2021-11-07 19:14:33,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774310350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:14:33,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:14:33,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:14:33,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140461184] [2021-11-07 19:14:33,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:14:33,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:14:33,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:14:33,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:14:33,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:33,383 INFO L87 Difference]: Start difference. First operand 44070 states and 51084 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) [2021-11-07 19:14:35,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:14:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:14:37,195 INFO L93 Difference]: Finished difference Result 120460 states and 139842 transitions. [2021-11-07 19:14:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:14:37,195 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 [2021-11-07 19:14:37,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:14:37,429 INFO L225 Difference]: With dead ends: 120460 [2021-11-07 19:14:37,430 INFO L226 Difference]: Without dead ends: 76458 [2021-11-07 19:14:37,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:37,554 INFO L933 BasicCegarLoop]: 13430 mSDtfsCounter, 10236 mSDsluCounter, 13010 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2072.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10236 SdHoareTripleChecker+Valid, 26440 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.13ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2214.53ms IncrementalHoareTripleChecker+Time [2021-11-07 19:14:37,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10236 Valid, 26440 Invalid, 28 Unknown, 0 Unchecked, 31.13ms Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2214.53ms Time] [2021-11-07 19:14:37,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76458 states. [2021-11-07 19:14:39,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76458 to 76136. [2021-11-07 19:14:39,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76136 states, 76070 states have (on average 1.163533587485211) internal successors, (88510), 76135 states have internal predecessors, (88510), 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) [2021-11-07 19:14:39,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76136 states to 76136 states and 88510 transitions. [2021-11-07 19:14:39,880 INFO L78 Accepts]: Start accepts. Automaton has 76136 states and 88510 transitions. Word has length 44 [2021-11-07 19:14:39,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:14:39,892 INFO L470 AbstractCegarLoop]: Abstraction has 76136 states and 88510 transitions. [2021-11-07 19:14:39,892 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) [2021-11-07 19:14:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 76136 states and 88510 transitions. [2021-11-07 19:14:39,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 19:14:39,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:14:39,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:14:39,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 19:14:39,894 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-07 19:14:39,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:14:39,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1690478766, now seen corresponding path program 1 times [2021-11-07 19:14:39,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:14:39,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022421495] [2021-11-07 19:14:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:14:39,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:14:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:14:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:14:40,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:14:40,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022421495] [2021-11-07 19:14:40,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022421495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:14:40,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:14:40,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:14:40,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974768967] [2021-11-07 19:14:40,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:14:40,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:14:40,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:14:40,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:14:40,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:40,054 INFO L87 Difference]: Start difference. First operand 76136 states and 88510 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2021-11-07 19:14:42,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:14:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:14:43,730 INFO L93 Difference]: Finished difference Result 126694 states and 147758 transitions. [2021-11-07 19:14:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:14:43,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2021-11-07 19:14:43,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:14:43,870 INFO L225 Difference]: With dead ends: 126694 [2021-11-07 19:14:43,870 INFO L226 Difference]: Without dead ends: 50626 [2021-11-07 19:14:43,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:43,999 INFO L933 BasicCegarLoop]: 13791 mSDtfsCounter, 4441 mSDsluCounter, 13274 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2165.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4441 SdHoareTripleChecker+Valid, 27065 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.56ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2281.27ms IncrementalHoareTripleChecker+Time [2021-11-07 19:14:43,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4441 Valid, 27065 Invalid, 100 Unknown, 0 Unchecked, 17.56ms Time], IncrementalHoareTripleChecker [21 Valid, 78 Invalid, 1 Unknown, 0 Unchecked, 2281.27ms Time] [2021-11-07 19:14:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50626 states. [2021-11-07 19:14:45,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50626 to 50502. [2021-11-07 19:14:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50502 states, 50436 states have (on average 1.172218256800698) internal successors, (59122), 50501 states have internal predecessors, (59122), 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) [2021-11-07 19:14:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50502 states to 50502 states and 59122 transitions. [2021-11-07 19:14:45,212 INFO L78 Accepts]: Start accepts. Automaton has 50502 states and 59122 transitions. Word has length 47 [2021-11-07 19:14:45,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:14:45,212 INFO L470 AbstractCegarLoop]: Abstraction has 50502 states and 59122 transitions. [2021-11-07 19:14:45,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2021-11-07 19:14:45,213 INFO L276 IsEmpty]: Start isEmpty. Operand 50502 states and 59122 transitions. [2021-11-07 19:14:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 19:14:45,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:14:45,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:14:45,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 19:14:45,214 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-07 19:14:45,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:14:45,215 INFO L85 PathProgramCache]: Analyzing trace with hash 565947639, now seen corresponding path program 1 times [2021-11-07 19:14:45,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:14:45,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567120966] [2021-11-07 19:14:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:14:45,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:14:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:14:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:14:45,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:14:45,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567120966] [2021-11-07 19:14:45,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567120966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:14:45,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:14:45,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:14:45,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963297427] [2021-11-07 19:14:45,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:14:45,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:14:45,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:14:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:14:45,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:45,349 INFO L87 Difference]: Start difference. First operand 50502 states and 59122 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:14:47,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:14:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:14:49,291 INFO L93 Difference]: Finished difference Result 142552 states and 166204 transitions. [2021-11-07 19:14:49,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:14:49,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 19:14:49,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:14:49,544 INFO L225 Difference]: With dead ends: 142552 [2021-11-07 19:14:49,545 INFO L226 Difference]: Without dead ends: 92118 [2021-11-07 19:14:49,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:49,659 INFO L933 BasicCegarLoop]: 13428 mSDtfsCounter, 12696 mSDsluCounter, 13280 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2115.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12696 SdHoareTripleChecker+Valid, 26708 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.81ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2229.53ms IncrementalHoareTripleChecker+Time [2021-11-07 19:14:49,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12696 Valid, 26708 Invalid, 65 Unknown, 0 Unchecked, 20.81ms Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 1 Unknown, 0 Unchecked, 2229.53ms Time] [2021-11-07 19:14:49,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92118 states. [2021-11-07 19:14:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92118 to 91680. [2021-11-07 19:14:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91680 states, 91614 states have (on average 1.1642434562403126) internal successors, (106661), 91679 states have internal predecessors, (106661), 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) [2021-11-07 19:14:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91680 states to 91680 states and 106661 transitions. [2021-11-07 19:14:52,126 INFO L78 Accepts]: Start accepts. Automaton has 91680 states and 106661 transitions. Word has length 51 [2021-11-07 19:14:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:14:52,127 INFO L470 AbstractCegarLoop]: Abstraction has 91680 states and 106661 transitions. [2021-11-07 19:14:52,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:14:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 91680 states and 106661 transitions. [2021-11-07 19:14:52,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 19:14:52,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:14:52,131 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:14:52,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 19:14:52,131 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-07 19:14:52,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:14:52,131 INFO L85 PathProgramCache]: Analyzing trace with hash 400041987, now seen corresponding path program 1 times [2021-11-07 19:14:52,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:14:52,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93438500] [2021-11-07 19:14:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:14:52,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:14:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:14:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:14:52,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:14:52,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93438500] [2021-11-07 19:14:52,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93438500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:14:52,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:14:52,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:14:52,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016321756] [2021-11-07 19:14:52,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:14:52,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:14:52,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:14:52,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:14:52,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:52,285 INFO L87 Difference]: Start difference. First operand 91680 states and 106661 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-07 19:14:54,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:14:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:14:57,726 INFO L93 Difference]: Finished difference Result 269219 states and 313338 transitions. [2021-11-07 19:14:57,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:14:57,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-07 19:14:57,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:14:58,148 INFO L225 Difference]: With dead ends: 269219 [2021-11-07 19:14:58,148 INFO L226 Difference]: Without dead ends: 177607 [2021-11-07 19:14:58,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:14:58,348 INFO L933 BasicCegarLoop]: 16546 mSDtfsCounter, 13341 mSDsluCounter, 13423 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2048.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13341 SdHoareTripleChecker+Valid, 29969 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.99ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2149.65ms IncrementalHoareTripleChecker+Time [2021-11-07 19:14:58,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13341 Valid, 29969 Invalid, 21 Unknown, 0 Unchecked, 23.99ms Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2149.65ms Time] [2021-11-07 19:14:58,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177607 states. [2021-11-07 19:15:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177607 to 177283. [2021-11-07 19:15:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177283 states, 177217 states have (on average 1.1647076747716076) internal successors, (206406), 177282 states have internal predecessors, (206406), 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) [2021-11-07 19:15:03,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177283 states to 177283 states and 206406 transitions. [2021-11-07 19:15:03,040 INFO L78 Accepts]: Start accepts. Automaton has 177283 states and 206406 transitions. Word has length 59 [2021-11-07 19:15:03,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:15:03,040 INFO L470 AbstractCegarLoop]: Abstraction has 177283 states and 206406 transitions. [2021-11-07 19:15:03,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-07 19:15:03,040 INFO L276 IsEmpty]: Start isEmpty. Operand 177283 states and 206406 transitions. [2021-11-07 19:15:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 19:15:03,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:15:03,041 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:15:03,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 19:15:03,042 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-07 19:15:03,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:15:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1066114040, now seen corresponding path program 1 times [2021-11-07 19:15:03,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:15:03,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597513985] [2021-11-07 19:15:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:15:03,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:15:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:15:03,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:15:03,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:15:03,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597513985] [2021-11-07 19:15:03,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597513985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:15:03,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:15:03,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 19:15:03,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401012723] [2021-11-07 19:15:03,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:15:03,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:15:03,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:15:03,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:15:03,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:15:03,178 INFO L87 Difference]: Start difference. First operand 177283 states and 206406 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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)