./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.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 28669211a2ef49b5efd7443ec92409c5f49218a96d1252c934deb7757bde86cd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 11:56:36,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 11:56:36,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 11:56:36,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 11:56:36,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 11:56:36,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 11:56:36,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 11:56:36,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 11:56:36,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 11:56:36,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 11:56:36,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 11:56:36,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 11:56:36,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 11:56:36,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 11:56:36,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 11:56:36,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 11:56:36,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 11:56:36,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 11:56:36,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 11:56:36,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 11:56:36,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 11:56:36,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 11:56:36,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 11:56:36,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 11:56:36,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 11:56:36,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 11:56:36,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 11:56:36,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 11:56:36,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 11:56:36,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 11:56:36,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 11:56:36,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 11:56:36,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 11:56:36,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 11:56:36,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 11:56:36,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 11:56:36,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 11:56:36,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 11:56:36,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 11:56:36,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 11:56:36,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 11:56:36,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 11:56:36,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 11:56:36,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 11:56:36,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 11:56:36,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 11:56:36,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 11:56:36,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 11:56:36,316 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 11:56:36,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 11:56:36,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 11:56:36,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 11:56:36,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 11:56:36,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 11:56:36,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 11:56:36,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 11:56:36,318 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 11:56:36,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 11:56:36,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 11:56:36,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 11:56:36,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 11:56:36,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 11:56:36,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 11:56:36,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 11:56:36,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 11:56:36,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 11:56:36,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 11:56:36,319 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 11:56:36,320 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 11:56:36,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 11:56:36,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 11:56:36,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28669211a2ef49b5efd7443ec92409c5f49218a96d1252c934deb7757bde86cd [2021-11-04 11:56:36,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 11:56:36,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 11:56:36,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 11:56:36,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 11:56:36,514 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 11:56:36,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-04 11:56:36,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e2870911/163054c4579440faa725495a7c6bdc96/FLAG883754391 [2021-11-04 11:56:37,289 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 11:56:37,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-04 11:56:37,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e2870911/163054c4579440faa725495a7c6bdc96/FLAG883754391 [2021-11-04 11:56:37,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e2870911/163054c4579440faa725495a7c6bdc96 [2021-11-04 11:56:37,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 11:56:37,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 11:56:37,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 11:56:37,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 11:56:37,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 11:56:37,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 11:56:37" (1/1) ... [2021-11-04 11:56:37,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@796a90ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:37, skipping insertion in model container [2021-11-04 11:56:37,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 11:56:37" (1/1) ... [2021-11-04 11:56:37,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 11:56:38,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 11:56:40,296 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-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387086,387099] [2021-11-04 11:56:40,299 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-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387231,387244] [2021-11-04 11:56:40,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 11:56:40,391 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 11:56:40,686 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-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387086,387099] [2021-11-04 11:56:40,687 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-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387231,387244] [2021-11-04 11:56:40,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 11:56:40,890 INFO L208 MainTranslator]: Completed translation [2021-11-04 11:56:40,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:40 WrapperNode [2021-11-04 11:56:40,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 11:56:40,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 11:56:40,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 11:56:40,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 11:56:40,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:40" (1/1) ... [2021-11-04 11:56:40,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:40" (1/1) ... [2021-11-04 11:56:43,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 11:56:43,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 11:56:43,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 11:56:43,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 11:56:43,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:40" (1/1) ... [2021-11-04 11:56:43,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:40" (1/1) ... [2021-11-04 11:56:43,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:40" (1/1) ... [2021-11-04 11:56:43,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:40" (1/1) ... [2021-11-04 11:56:44,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:40" (1/1) ... [2021-11-04 11:56:45,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:40" (1/1) ... [2021-11-04 11:56:45,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:40" (1/1) ... [2021-11-04 11:56:45,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 11:56:45,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 11:56:45,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 11:56:45,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 11:56:45,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:40" (1/1) ... [2021-11-04 11:56:45,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 11:56:45,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 11:56:45,608 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) [2021-11-04 11:56:45,631 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 [2021-11-04 11:56:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-04 11:56:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 11:56:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 11:56:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 11:56:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 11:56:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 11:56:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 11:56:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 11:56:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 11:56:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 11:56:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 11:56:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 11:56:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 11:56:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 11:56:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 11:56:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 11:56:54,749 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-04 11:56:54,749 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-04 11:56:54,750 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 11:56:54,750 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 11:56:54,753 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 11:56:54,754 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 11:56:54,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 11:56:54,920 INFO L299 CfgBuilder]: Removed 20046 assume(true) statements. [2021-11-04 11:56:54,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 11:56:54 BoogieIcfgContainer [2021-11-04 11:56:54,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 11:56:54,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 11:56:54,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 11:56:54,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 11:56:54,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 11:56:37" (1/3) ... [2021-11-04 11:56:54,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23939437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 11:56:54, skipping insertion in model container [2021-11-04 11:56:54,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 11:56:40" (2/3) ... [2021-11-04 11:56:54,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23939437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 11:56:54, skipping insertion in model container [2021-11-04 11:56:54,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 11:56:54" (3/3) ... [2021-11-04 11:56:54,941 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-04 11:56:54,946 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 11:56:54,946 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-04 11:56:55,042 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 11:56:55,048 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 [2021-11-04 11:56:55,049 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-04 11:56:55,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 13720 states, 13710 states have (on average 1.2010940919037199) internal successors, (16467), 13719 states have internal predecessors, (16467), 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) [2021-11-04 11:56:55,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 11:56:55,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 11:56:55,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 11:56:55,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 11:56:55,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 11:56:55,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2040958562, now seen corresponding path program 1 times [2021-11-04 11:56:55,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 11:56:55,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139026335] [2021-11-04 11:56:55,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 11:56:55,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 11:56:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 11:56:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 11:56:55,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 11:56:55,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139026335] [2021-11-04 11:56:55,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139026335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 11:56:55,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 11:56:55,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 11:56:55,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229754032] [2021-11-04 11:56:55,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 11:56:55,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 11:56:55,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 11:56:55,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 11:56:55,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 11:56:55,984 INFO L87 Difference]: Start difference. First operand has 13720 states, 13710 states have (on average 1.2010940919037199) internal successors, (16467), 13719 states have internal predecessors, (16467), 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 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 11:56:58,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 11:57:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 11:57:49,669 INFO L93 Difference]: Finished difference Result 36867 states and 44235 transitions. [2021-11-04 11:57:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 11:57:49,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-04 11:57:49,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 11:57:49,773 INFO L225 Difference]: With dead ends: 36867 [2021-11-04 11:57:49,773 INFO L226 Difference]: Without dead ends: 22855 [2021-11-04 11:57:49,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 11:57:49,809 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 11454 mSDsluCounter, 16325 mSDsCounter, 0 mSdLazyCounter, 32420 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46992.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11454 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 32432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 103.29ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32420 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52150.05ms IncrementalHoareTripleChecker+Time [2021-11-04 11:57:49,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11454 Valid, 408 Invalid, 32432 Unknown, 0 Unchecked, 103.29ms Time], IncrementalHoareTripleChecker [11 Valid, 32420 Invalid, 1 Unknown, 0 Unchecked, 52150.05ms Time] [2021-11-04 11:57:49,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22855 states. [2021-11-04 11:57:50,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22855 to 22274. [2021-11-04 11:57:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22274 states, 22264 states have (on average 1.1864444843693855) internal successors, (26415), 22273 states have internal predecessors, (26415), 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) [2021-11-04 11:57:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22274 states to 22274 states and 26415 transitions. [2021-11-04 11:57:50,468 INFO L78 Accepts]: Start accepts. Automaton has 22274 states and 26415 transitions. Word has length 74 [2021-11-04 11:57:50,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 11:57:50,470 INFO L470 AbstractCegarLoop]: Abstraction has 22274 states and 26415 transitions. [2021-11-04 11:57:50,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 11:57:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 22274 states and 26415 transitions. [2021-11-04 11:57:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 11:57:50,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 11:57:50,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 11:57:50,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 11:57:50,479 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 11:57:50,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 11:57:50,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1734901416, now seen corresponding path program 1 times [2021-11-04 11:57:50,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 11:57:50,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442072693] [2021-11-04 11:57:50,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 11:57:50,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 11:57:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 11:57:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 11:57:50,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 11:57:50,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442072693] [2021-11-04 11:57:50,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442072693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 11:57:50,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 11:57:50,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 11:57:50,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137810369] [2021-11-04 11:57:50,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 11:57:50,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 11:57:50,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 11:57:50,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 11:57:50,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 11:57:50,805 INFO L87 Difference]: Start difference. First operand 22274 states and 26415 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 11:57:52,851 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 [] [2021-11-04 11:58:43,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 11:58:43,962 INFO L93 Difference]: Finished difference Result 62320 states and 73906 transitions. [2021-11-04 11:58:43,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 11:58:43,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-04 11:58:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 11:58:44,074 INFO L225 Difference]: With dead ends: 62320 [2021-11-04 11:58:44,074 INFO L226 Difference]: Without dead ends: 40170 [2021-11-04 11:58:44,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 11:58:44,127 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13889 mSDsluCounter, 15031 mSDsCounter, 0 mSdLazyCounter, 31015 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46679.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13889 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.46ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31015 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51460.09ms IncrementalHoareTripleChecker+Time [2021-11-04 11:58:44,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13889 Valid, 0 Invalid, 31029 Unknown, 0 Unchecked, 59.46ms Time], IncrementalHoareTripleChecker [13 Valid, 31015 Invalid, 1 Unknown, 0 Unchecked, 51460.09ms Time] [2021-11-04 11:58:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40170 states. [2021-11-04 11:58:45,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40170 to 40018. [2021-11-04 11:58:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40018 states, 40008 states have (on average 1.1863377324535094) internal successors, (47463), 40017 states have internal predecessors, (47463), 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) [2021-11-04 11:58:45,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40018 states to 40018 states and 47463 transitions. [2021-11-04 11:58:45,260 INFO L78 Accepts]: Start accepts. Automaton has 40018 states and 47463 transitions. Word has length 96 [2021-11-04 11:58:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 11:58:45,261 INFO L470 AbstractCegarLoop]: Abstraction has 40018 states and 47463 transitions. [2021-11-04 11:58:45,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 11:58:45,262 INFO L276 IsEmpty]: Start isEmpty. Operand 40018 states and 47463 transitions. [2021-11-04 11:58:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-04 11:58:45,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 11:58:45,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 11:58:45,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 11:58:45,267 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 11:58:45,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 11:58:45,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1395204584, now seen corresponding path program 1 times [2021-11-04 11:58:45,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 11:58:45,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857041949] [2021-11-04 11:58:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 11:58:45,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 11:58:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 11:58:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 11:58:45,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 11:58:45,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857041949] [2021-11-04 11:58:45,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857041949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 11:58:45,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 11:58:45,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-04 11:58:45,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702555917] [2021-11-04 11:58:45,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 11:58:45,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 11:58:45,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 11:58:45,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 11:58:45,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-04 11:58:45,616 INFO L87 Difference]: Start difference. First operand 40018 states and 47463 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2021-11-04 11:58:47,674 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:00:20,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:00:20,397 INFO L93 Difference]: Finished difference Result 103512 states and 123029 transitions. [2021-11-04 12:00:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 12:00:20,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 119 [2021-11-04 12:00:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:00:20,562 INFO L225 Difference]: With dead ends: 103512 [2021-11-04 12:00:20,563 INFO L226 Difference]: Without dead ends: 63618 [2021-11-04 12:00:20,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.17ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-04 12:00:20,665 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 42359 mSDsluCounter, 40090 mSDsCounter, 0 mSdLazyCounter, 62890 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84711.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42359 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 62957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 265.22ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 62890 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91875.54ms IncrementalHoareTripleChecker+Time [2021-11-04 12:00:20,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42359 Valid, 0 Invalid, 62957 Unknown, 0 Unchecked, 265.22ms Time], IncrementalHoareTripleChecker [66 Valid, 62890 Invalid, 1 Unknown, 0 Unchecked, 91875.54ms Time] [2021-11-04 12:00:20,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63618 states. [2021-11-04 12:00:21,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63618 to 63558. [2021-11-04 12:00:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63558 states, 63548 states have (on average 1.1894473468873923) internal successors, (75587), 63557 states have internal predecessors, (75587), 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) [2021-11-04 12:00:22,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63558 states to 63558 states and 75587 transitions. [2021-11-04 12:00:22,201 INFO L78 Accepts]: Start accepts. Automaton has 63558 states and 75587 transitions. Word has length 119 [2021-11-04 12:00:22,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:00:22,201 INFO L470 AbstractCegarLoop]: Abstraction has 63558 states and 75587 transitions. [2021-11-04 12:00:22,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2021-11-04 12:00:22,202 INFO L276 IsEmpty]: Start isEmpty. Operand 63558 states and 75587 transitions. [2021-11-04 12:00:22,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-04 12:00:22,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:00:22,206 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:00:22,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 12:00:22,207 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 12:00:22,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:00:22,207 INFO L85 PathProgramCache]: Analyzing trace with hash -578980717, now seen corresponding path program 1 times [2021-11-04 12:00:22,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:00:22,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787051388] [2021-11-04 12:00:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:00:22,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:00:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:00:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 12:00:22,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:00:22,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787051388] [2021-11-04 12:00:22,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787051388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:00:22,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 12:00:22,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 12:00:22,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359255506] [2021-11-04 12:00:22,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:00:22,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:00:22,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:00:22,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:00:22,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:00:22,734 INFO L87 Difference]: Start difference. First operand 63558 states and 75587 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-04 12:00:24,788 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 [] [2021-11-04 12:01:25,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:01:25,666 INFO L93 Difference]: Finished difference Result 138810 states and 165192 transitions. [2021-11-04 12:01:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 12:01:25,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2021-11-04 12:01:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:01:25,825 INFO L225 Difference]: With dead ends: 138810 [2021-11-04 12:01:25,825 INFO L226 Difference]: Without dead ends: 75376 [2021-11-04 12:01:25,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:01:25,932 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6823 mSDsluCounter, 15893 mSDsCounter, 0 mSdLazyCounter, 38739 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55347.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6823 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.86ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 38739 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60245.49ms IncrementalHoareTripleChecker+Time [2021-11-04 12:01:25,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6823 Valid, 0 Invalid, 38754 Unknown, 0 Unchecked, 101.86ms Time], IncrementalHoareTripleChecker [14 Valid, 38739 Invalid, 1 Unknown, 0 Unchecked, 60245.49ms Time] [2021-11-04 12:01:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75376 states. [2021-11-04 12:01:27,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75376 to 75350. [2021-11-04 12:01:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75350 states, 75340 states have (on average 1.1901645872046722) internal successors, (89667), 75349 states have internal predecessors, (89667), 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) [2021-11-04 12:01:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75350 states to 75350 states and 89667 transitions. [2021-11-04 12:01:27,734 INFO L78 Accepts]: Start accepts. Automaton has 75350 states and 89667 transitions. Word has length 158 [2021-11-04 12:01:27,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:01:27,734 INFO L470 AbstractCegarLoop]: Abstraction has 75350 states and 89667 transitions. [2021-11-04 12:01:27,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-04 12:01:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 75350 states and 89667 transitions. [2021-11-04 12:01:27,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-04 12:01:27,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:01:27,740 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:01:27,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 12:01:27,740 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 12:01:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:01:27,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1539650330, now seen corresponding path program 1 times [2021-11-04 12:01:27,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:01:27,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24506354] [2021-11-04 12:01:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:01:27,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:01:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:01:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 12:01:27,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:01:27,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24506354] [2021-11-04 12:01:27,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24506354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:01:27,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 12:01:27,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 12:01:27,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484231606] [2021-11-04 12:01:27,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:01:27,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:01:27,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:01:27,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:01:27,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:01:27,998 INFO L87 Difference]: Start difference. First operand 75350 states and 89667 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2021-11-04 12:01:30,047 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 [] [2021-11-04 12:02:28,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:02:28,722 INFO L93 Difference]: Finished difference Result 162378 states and 193320 transitions. [2021-11-04 12:02:28,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 12:02:28,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 195 [2021-11-04 12:02:28,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:02:28,864 INFO L225 Difference]: With dead ends: 162378 [2021-11-04 12:02:28,864 INFO L226 Difference]: Without dead ends: 87152 [2021-11-04 12:02:28,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:02:28,961 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6817 mSDsluCounter, 15906 mSDsCounter, 0 mSdLazyCounter, 38747 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53406.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6817 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 95.35ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38747 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58153.64ms IncrementalHoareTripleChecker+Time [2021-11-04 12:02:28,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6817 Valid, 0 Invalid, 38760 Unknown, 0 Unchecked, 95.35ms Time], IncrementalHoareTripleChecker [12 Valid, 38747 Invalid, 1 Unknown, 0 Unchecked, 58153.64ms Time] [2021-11-04 12:02:29,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87152 states. [2021-11-04 12:02:30,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87152 to 87126. [2021-11-04 12:02:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87126 states, 87116 states have (on average 1.190722714541531) internal successors, (103731), 87125 states have internal predecessors, (103731), 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) [2021-11-04 12:02:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87126 states to 87126 states and 103731 transitions. [2021-11-04 12:02:30,965 INFO L78 Accepts]: Start accepts. Automaton has 87126 states and 103731 transitions. Word has length 195 [2021-11-04 12:02:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:02:30,965 INFO L470 AbstractCegarLoop]: Abstraction has 87126 states and 103731 transitions. [2021-11-04 12:02:30,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2021-11-04 12:02:30,966 INFO L276 IsEmpty]: Start isEmpty. Operand 87126 states and 103731 transitions. [2021-11-04 12:02:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-04 12:02:30,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:02:30,970 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:02:30,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 12:02:30,970 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 12:02:30,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:02:30,971 INFO L85 PathProgramCache]: Analyzing trace with hash -700616668, now seen corresponding path program 1 times [2021-11-04 12:02:30,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:02:30,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831203368] [2021-11-04 12:02:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:02:30,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:02:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:02:31,398 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 12:02:31,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:02:31,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831203368] [2021-11-04 12:02:31,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831203368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:02:31,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 12:02:31,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 12:02:31,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655904712] [2021-11-04 12:02:31,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:02:31,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:02:31,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:02:31,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:02:31,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:02:31,400 INFO L87 Difference]: Start difference. First operand 87126 states and 103731 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2021-11-04 12:02:33,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:03:28,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:03:28,808 INFO L93 Difference]: Finished difference Result 185942 states and 221472 transitions. [2021-11-04 12:03:28,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 12:03:28,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 195 [2021-11-04 12:03:28,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:03:28,996 INFO L225 Difference]: With dead ends: 185942 [2021-11-04 12:03:28,996 INFO L226 Difference]: Without dead ends: 98940 [2021-11-04 12:03:29,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:03:29,119 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10113 mSDsluCounter, 12613 mSDsCounter, 0 mSdLazyCounter, 35457 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50063.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 78.98ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35457 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54604.12ms IncrementalHoareTripleChecker+Time [2021-11-04 12:03:29,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10113 Valid, 0 Invalid, 35473 Unknown, 0 Unchecked, 78.98ms Time], IncrementalHoareTripleChecker [15 Valid, 35457 Invalid, 1 Unknown, 0 Unchecked, 54604.12ms Time] [2021-11-04 12:03:29,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98940 states. [2021-11-04 12:03:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98940 to 98914. [2021-11-04 12:03:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98914 states, 98904 states have (on average 1.1911247270080079) internal successors, (117807), 98913 states have internal predecessors, (117807), 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) [2021-11-04 12:03:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98914 states to 98914 states and 117807 transitions. [2021-11-04 12:03:31,651 INFO L78 Accepts]: Start accepts. Automaton has 98914 states and 117807 transitions. Word has length 195 [2021-11-04 12:03:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:03:31,651 INFO L470 AbstractCegarLoop]: Abstraction has 98914 states and 117807 transitions. [2021-11-04 12:03:31,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2021-11-04 12:03:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 98914 states and 117807 transitions. [2021-11-04 12:03:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-04 12:03:31,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:03:31,658 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:03:31,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 12:03:31,658 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 12:03:31,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:03:31,659 INFO L85 PathProgramCache]: Analyzing trace with hash -609554113, now seen corresponding path program 1 times [2021-11-04 12:03:31,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:03:31,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114811454] [2021-11-04 12:03:31,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:03:31,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:03:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:03:31,876 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-04 12:03:31,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:03:31,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114811454] [2021-11-04 12:03:31,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114811454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:03:31,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 12:03:31,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 12:03:31,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645322704] [2021-11-04 12:03:31,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:03:31,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:03:31,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:03:31,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:03:31,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:03:31,879 INFO L87 Difference]: Start difference. First operand 98914 states and 117807 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2021-11-04 12:03:33,928 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 [] [2021-11-04 12:04:29,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:04:29,510 INFO L93 Difference]: Finished difference Result 209514 states and 249616 transitions. [2021-11-04 12:04:29,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 12:04:29,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 229 [2021-11-04 12:04:29,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:04:29,725 INFO L225 Difference]: With dead ends: 209514 [2021-11-04 12:04:29,725 INFO L226 Difference]: Without dead ends: 110724 [2021-11-04 12:04:30,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:04:30,084 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6829 mSDsluCounter, 15896 mSDsCounter, 0 mSdLazyCounter, 34050 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49588.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6829 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 85.41ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34050 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54473.74ms IncrementalHoareTripleChecker+Time [2021-11-04 12:04:30,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6829 Valid, 0 Invalid, 34063 Unknown, 0 Unchecked, 85.41ms Time], IncrementalHoareTripleChecker [12 Valid, 34050 Invalid, 1 Unknown, 0 Unchecked, 54473.74ms Time] [2021-11-04 12:04:30,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110724 states. [2021-11-04 12:04:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110724 to 110698. [2021-11-04 12:04:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110698 states, 110688 states have (on average 1.1914480341139058) internal successors, (131879), 110697 states have internal predecessors, (131879), 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) [2021-11-04 12:04:32,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110698 states to 110698 states and 131879 transitions. [2021-11-04 12:04:32,734 INFO L78 Accepts]: Start accepts. Automaton has 110698 states and 131879 transitions. Word has length 229 [2021-11-04 12:04:32,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:04:32,734 INFO L470 AbstractCegarLoop]: Abstraction has 110698 states and 131879 transitions. [2021-11-04 12:04:32,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2021-11-04 12:04:32,734 INFO L276 IsEmpty]: Start isEmpty. Operand 110698 states and 131879 transitions. [2021-11-04 12:04:32,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-04 12:04:32,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:04:32,741 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:04:32,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 12:04:32,741 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 12:04:32,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:04:32,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1448587775, now seen corresponding path program 1 times [2021-11-04 12:04:32,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:04:32,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75338241] [2021-11-04 12:04:32,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:04:32,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:04:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:04:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-04 12:04:32,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:04:32,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75338241] [2021-11-04 12:04:32,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75338241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:04:32,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 12:04:32,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 12:04:32,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345448536] [2021-11-04 12:04:32,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:04:32,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:04:32,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:04:32,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:04:32,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:04:32,971 INFO L87 Difference]: Start difference. First operand 110698 states and 131879 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2021-11-04 12:04:35,024 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 [] [2021-11-04 12:05:34,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:05:34,682 INFO L93 Difference]: Finished difference Result 233078 states and 277752 transitions. [2021-11-04 12:05:34,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 12:05:34,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 229 [2021-11-04 12:05:34,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:05:34,930 INFO L225 Difference]: With dead ends: 233078 [2021-11-04 12:05:34,930 INFO L226 Difference]: Without dead ends: 122504 [2021-11-04 12:05:35,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:05:35,122 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6820 mSDsluCounter, 15904 mSDsCounter, 0 mSdLazyCounter, 38748 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53179.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6820 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 149.89ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38748 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58061.92ms IncrementalHoareTripleChecker+Time [2021-11-04 12:05:35,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6820 Valid, 0 Invalid, 38760 Unknown, 0 Unchecked, 149.89ms Time], IncrementalHoareTripleChecker [11 Valid, 38748 Invalid, 1 Unknown, 0 Unchecked, 58061.92ms Time] [2021-11-04 12:05:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122504 states. [2021-11-04 12:05:37,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122504 to 122478. [2021-11-04 12:05:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122478 states, 122468 states have (on average 1.1917153868765717) internal successors, (145947), 122477 states have internal predecessors, (145947), 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) [2021-11-04 12:05:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122478 states to 122478 states and 145947 transitions. [2021-11-04 12:05:38,206 INFO L78 Accepts]: Start accepts. Automaton has 122478 states and 145947 transitions. Word has length 229 [2021-11-04 12:05:38,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:05:38,206 INFO L470 AbstractCegarLoop]: Abstraction has 122478 states and 145947 transitions. [2021-11-04 12:05:38,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2021-11-04 12:05:38,207 INFO L276 IsEmpty]: Start isEmpty. Operand 122478 states and 145947 transitions. [2021-11-04 12:05:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-04 12:05:38,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:05:38,213 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:05:38,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 12:05:38,214 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 12:05:38,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:05:38,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1006491698, now seen corresponding path program 1 times [2021-11-04 12:05:38,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:05:38,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732146] [2021-11-04 12:05:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:05:38,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:05:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:05:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-04 12:05:38,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:05:38,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732146] [2021-11-04 12:05:38,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:05:38,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 12:05:38,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 12:05:38,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744694550] [2021-11-04 12:05:38,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:05:38,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:05:38,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:05:38,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:05:38,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:05:38,432 INFO L87 Difference]: Start difference. First operand 122478 states and 145947 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2021-11-04 12:05:40,482 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 [] [2021-11-04 12:06:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:06:28,578 INFO L93 Difference]: Finished difference Result 246072 states and 293355 transitions. [2021-11-04 12:06:28,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 12:06:28,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 249 [2021-11-04 12:06:28,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:06:28,820 INFO L225 Difference]: With dead ends: 246072 [2021-11-04 12:06:28,820 INFO L226 Difference]: Without dead ends: 123718 [2021-11-04 12:06:28,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:06:28,980 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 196 mSDsluCounter, 15774 mSDsCounter, 0 mSdLazyCounter, 31891 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42877.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.33ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 31891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46787.79ms IncrementalHoareTripleChecker+Time [2021-11-04 12:06:28,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 0 Invalid, 31974 Unknown, 0 Unchecked, 87.33ms Time], IncrementalHoareTripleChecker [82 Valid, 31891 Invalid, 1 Unknown, 0 Unchecked, 46787.79ms Time] [2021-11-04 12:06:29,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123718 states. [2021-11-04 12:06:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123718 to 122838. [2021-11-04 12:06:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122838 states, 122828 states have (on average 1.1914791415638128) internal successors, (146347), 122837 states have internal predecessors, (146347), 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) [2021-11-04 12:06:31,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122838 states to 122838 states and 146347 transitions. [2021-11-04 12:06:31,972 INFO L78 Accepts]: Start accepts. Automaton has 122838 states and 146347 transitions. Word has length 249 [2021-11-04 12:06:31,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:06:31,973 INFO L470 AbstractCegarLoop]: Abstraction has 122838 states and 146347 transitions. [2021-11-04 12:06:31,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2021-11-04 12:06:31,973 INFO L276 IsEmpty]: Start isEmpty. Operand 122838 states and 146347 transitions. [2021-11-04 12:06:31,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-04 12:06:31,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:06:31,980 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:06:31,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 12:06:31,980 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 12:06:31,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:06:31,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1595267047, now seen corresponding path program 1 times [2021-11-04 12:06:31,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:06:31,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362139827] [2021-11-04 12:06:31,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:06:31,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:06:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:06:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-04 12:06:32,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:06:32,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362139827] [2021-11-04 12:06:32,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362139827] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 12:06:32,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007170479] [2021-11-04 12:06:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:06:32,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 12:06:32,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 12:06:32,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 12:06:32,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 12:06:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:06:33,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 4123 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 12:06:33,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 12:06:34,997 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-04 12:06:34,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 12:06:34,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007170479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:06:34,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 12:06:34,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-04 12:06:34,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230482861] [2021-11-04 12:06:34,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:06:34,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:06:34,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:06:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:06:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 12:06:35,000 INFO L87 Difference]: Start difference. First operand 122838 states and 146347 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 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) [2021-11-04 12:06:37,036 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 [] [2021-11-04 12:07:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:07:10,252 INFO L93 Difference]: Finished difference Result 245552 states and 292555 transitions. [2021-11-04 12:07:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 12:07:10,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 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 269 [2021-11-04 12:07:10,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:07:10,496 INFO L225 Difference]: With dead ends: 245552 [2021-11-04 12:07:10,497 INFO L226 Difference]: Without dead ends: 122838 [2021-11-04 12:07:10,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.74ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 12:07:10,667 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15739 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15953 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28677.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15739 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.51ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31483.01ms IncrementalHoareTripleChecker+Time [2021-11-04 12:07:10,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15739 Valid, 0 Invalid, 15963 Unknown, 0 Unchecked, 26.51ms Time], IncrementalHoareTripleChecker [9 Valid, 15953 Invalid, 1 Unknown, 0 Unchecked, 31483.01ms Time] [2021-11-04 12:07:10,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122838 states. [2021-11-04 12:07:13,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122838 to 122838. [2021-11-04 12:07:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122838 states, 122828 states have (on average 1.190664994952291) internal successors, (146247), 122837 states have internal predecessors, (146247), 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) [2021-11-04 12:07:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122838 states to 122838 states and 146247 transitions. [2021-11-04 12:07:13,906 INFO L78 Accepts]: Start accepts. Automaton has 122838 states and 146247 transitions. Word has length 269 [2021-11-04 12:07:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:07:13,907 INFO L470 AbstractCegarLoop]: Abstraction has 122838 states and 146247 transitions. [2021-11-04 12:07:13,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 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) [2021-11-04 12:07:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 122838 states and 146247 transitions. [2021-11-04 12:07:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-04 12:07:13,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:07:13,912 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:07:13,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 12:07:14,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-04 12:07:14,116 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 12:07:14,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:07:14,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2086577916, now seen corresponding path program 1 times [2021-11-04 12:07:14,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:07:14,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337599632] [2021-11-04 12:07:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:07:14,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:07:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:07:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-04 12:07:14,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:07:14,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337599632] [2021-11-04 12:07:14,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337599632] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 12:07:14,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063094232] [2021-11-04 12:07:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:07:14,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 12:07:14,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 12:07:14,388 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 12:07:14,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 12:07:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:07:15,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 4124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 12:07:15,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 12:07:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-04 12:07:16,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 12:07:16,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063094232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:07:16,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 12:07:16,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-04 12:07:16,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915262438] [2021-11-04 12:07:16,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:07:16,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:07:16,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:07:16,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:07:16,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 12:07:16,983 INFO L87 Difference]: Start difference. First operand 122838 states and 146247 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 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) [2021-11-04 12:07:19,019 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 [] [2021-11-04 12:07:52,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:07:52,958 INFO L93 Difference]: Finished difference Result 245552 states and 292355 transitions. [2021-11-04 12:07:52,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 12:07:52,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 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 270 [2021-11-04 12:07:52,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:07:53,324 INFO L225 Difference]: With dead ends: 245552 [2021-11-04 12:07:53,324 INFO L226 Difference]: Without dead ends: 122838 [2021-11-04 12:07:53,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.24ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 12:07:53,544 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15728 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15943 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29145.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15728 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.00ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15943 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32266.30ms IncrementalHoareTripleChecker+Time [2021-11-04 12:07:53,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15728 Valid, 0 Invalid, 15953 Unknown, 0 Unchecked, 29.00ms Time], IncrementalHoareTripleChecker [9 Valid, 15943 Invalid, 1 Unknown, 0 Unchecked, 32266.30ms Time] [2021-11-04 12:07:53,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122838 states. [2021-11-04 12:07:56,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122838 to 122838. [2021-11-04 12:07:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122838 states, 122828 states have (on average 1.1898508483407693) internal successors, (146147), 122837 states have internal predecessors, (146147), 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) [2021-11-04 12:07:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122838 states to 122838 states and 146147 transitions. [2021-11-04 12:07:56,905 INFO L78 Accepts]: Start accepts. Automaton has 122838 states and 146147 transitions. Word has length 270 [2021-11-04 12:07:56,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:07:56,906 INFO L470 AbstractCegarLoop]: Abstraction has 122838 states and 146147 transitions. [2021-11-04 12:07:56,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 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) [2021-11-04 12:07:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 122838 states and 146147 transitions. [2021-11-04 12:07:56,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-04 12:07:56,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:07:56,911 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:07:56,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 12:07:57,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-04 12:07:57,114 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 12:07:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:07:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash 259803732, now seen corresponding path program 1 times [2021-11-04 12:07:57,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:07:57,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674849330] [2021-11-04 12:07:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:07:57,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:07:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:07:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-04 12:07:57,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:07:57,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674849330] [2021-11-04 12:07:57,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674849330] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 12:07:57,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275872516] [2021-11-04 12:07:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:07:57,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 12:07:57,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 12:07:57,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 12:07:57,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 12:07:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:07:58,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 4125 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 12:07:58,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 12:08:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-04 12:08:00,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 12:08:00,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275872516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:08:00,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 12:08:00,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-04 12:08:00,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794841851] [2021-11-04 12:08:00,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:08:00,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:08:00,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:08:00,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:08:00,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 12:08:00,047 INFO L87 Difference]: Start difference. First operand 122838 states and 146147 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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) [2021-11-04 12:08:02,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:08:35,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:08:35,353 INFO L93 Difference]: Finished difference Result 245552 states and 292155 transitions. [2021-11-04 12:08:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 12:08:35,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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 271 [2021-11-04 12:08:35,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:08:35,594 INFO L225 Difference]: With dead ends: 245552 [2021-11-04 12:08:35,595 INFO L226 Difference]: Without dead ends: 122838 [2021-11-04 12:08:35,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.97ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 12:08:35,765 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15717 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15933 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28399.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15717 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.43ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15933 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31143.63ms IncrementalHoareTripleChecker+Time [2021-11-04 12:08:35,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15717 Valid, 0 Invalid, 15943 Unknown, 0 Unchecked, 25.43ms Time], IncrementalHoareTripleChecker [9 Valid, 15933 Invalid, 1 Unknown, 0 Unchecked, 31143.63ms Time] [2021-11-04 12:08:35,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122838 states. [2021-11-04 12:08:39,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122838 to 122838. [2021-11-04 12:08:39,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122838 states, 122828 states have (on average 1.1890367017292474) internal successors, (146047), 122837 states have internal predecessors, (146047), 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) [2021-11-04 12:08:39,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122838 states to 122838 states and 146047 transitions. [2021-11-04 12:08:39,619 INFO L78 Accepts]: Start accepts. Automaton has 122838 states and 146047 transitions. Word has length 271 [2021-11-04 12:08:39,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:08:39,620 INFO L470 AbstractCegarLoop]: Abstraction has 122838 states and 146047 transitions. [2021-11-04 12:08:39,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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) [2021-11-04 12:08:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 122838 states and 146047 transitions. [2021-11-04 12:08:39,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-04 12:08:39,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:08:39,626 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:08:39,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 12:08:39,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 12:08:39,832 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 12:08:39,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:08:39,832 INFO L85 PathProgramCache]: Analyzing trace with hash -535472169, now seen corresponding path program 1 times [2021-11-04 12:08:39,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:08:39,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343447366] [2021-11-04 12:08:39,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:08:39,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:08:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:08:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-04 12:08:40,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:08:40,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343447366] [2021-11-04 12:08:40,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343447366] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 12:08:40,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330849670] [2021-11-04 12:08:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:08:40,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 12:08:40,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 12:08:40,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 12:08:40,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 12:08:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:08:41,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 4126 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 12:08:41,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 12:08:42,255 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-04 12:08:42,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 12:08:42,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330849670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:08:42,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 12:08:42,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-04 12:08:42,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787776083] [2021-11-04 12:08:42,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:08:42,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:08:42,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:08:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:08:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 12:08:42,258 INFO L87 Difference]: Start difference. First operand 122838 states and 146047 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2021-11-04 12:08:44,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []