./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 12:13:12,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:13:12,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:13:12,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:13:12,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:13:12,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:13:12,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:13:12,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:13:12,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:13:12,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:13:12,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:13:12,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:13:12,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:13:12,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:13:12,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:13:12,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:13:12,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:13:12,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:13:12,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:13:12,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:13:12,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:13:12,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:13:12,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:13:12,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:13:12,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:13:12,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:13:12,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:13:12,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:13:12,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:13:12,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:13:12,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:13:12,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:13:12,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:13:12,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:13:12,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:13:12,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:13:12,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:13:12,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:13:12,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:13:12,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:13:12,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:13:12,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:13:12,273 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:13:12,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:13:12,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:13:12,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:13:12,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:13:12,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:13:12,275 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:13:12,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:13:12,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:13:12,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:13:12,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:13:12,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:13:12,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:13:12,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:13:12,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:13:12,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:13:12,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:13:12,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:13:12,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:13:12,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:13:12,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:13:12,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:13:12,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:13:12,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:13:12,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:13:12,279 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:13:12,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:13:12,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:13:12,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:13:12,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2021-11-07 12:13:12,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:13:12,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:13:12,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:13:12,479 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:13:12,479 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:13:12,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-11-07 12:13:12,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/054f4411b/cb2c125a505d4ecb99a9d08c9794c679/FLAGecbacbf3e [2021-11-07 12:13:13,002 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:13:13,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-11-07 12:13:13,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/054f4411b/cb2c125a505d4ecb99a9d08c9794c679/FLAGecbacbf3e [2021-11-07 12:13:13,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/054f4411b/cb2c125a505d4ecb99a9d08c9794c679 [2021-11-07 12:13:13,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:13:13,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:13:13,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:13:13,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:13:13,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:13:13,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:13:13" (1/1) ... [2021-11-07 12:13:13,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3335ac15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:13, skipping insertion in model container [2021-11-07 12:13:13,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:13:13" (1/1) ... [2021-11-07 12:13:13,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:13:13,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:13:13,767 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2021-11-07 12:13:13,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:13:13,895 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:13:13,979 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2021-11-07 12:13:13,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:13:14,072 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:13:14,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:14 WrapperNode [2021-11-07 12:13:14,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:13:14,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:13:14,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:13:14,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:13:14,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:14" (1/1) ... [2021-11-07 12:13:14,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:14" (1/1) ... [2021-11-07 12:13:14,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:13:14,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:13:14,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:13:14,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:13:14,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:14" (1/1) ... [2021-11-07 12:13:14,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:14" (1/1) ... [2021-11-07 12:13:14,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:14" (1/1) ... [2021-11-07 12:13:14,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:14" (1/1) ... [2021-11-07 12:13:14,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:14" (1/1) ... [2021-11-07 12:13:14,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:14" (1/1) ... [2021-11-07 12:13:14,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:14" (1/1) ... [2021-11-07 12:13:14,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:13:14,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:13:14,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:13:14,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:13:14,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:14" (1/1) ... [2021-11-07 12:13:14,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:13:14,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:13:14,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 12:13:14,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 12:13:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:13:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:13:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:13:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:13:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:13:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:13:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:13:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:13:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-07 12:13:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:13:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:13:14,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:14:00,540 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:14:00,541 INFO L299 CfgBuilder]: Removed 1211 assume(true) statements. [2021-11-07 12:14:00,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:14:00 BoogieIcfgContainer [2021-11-07 12:14:00,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:14:00,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:14:00,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:14:00,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:14:00,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:13:13" (1/3) ... [2021-11-07 12:14:00,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2789a7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:14:00, skipping insertion in model container [2021-11-07 12:14:00,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:14" (2/3) ... [2021-11-07 12:14:00,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2789a7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:14:00, skipping insertion in model container [2021-11-07 12:14:00,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:14:00" (3/3) ... [2021-11-07 12:14:00,553 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-11-07 12:14:00,557 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:14:00,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 12:14:00,600 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:14:00,606 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 12:14:00,607 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 12:14:00,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 1381 states, 1369 states have (on average 1.3783783783783783) internal successors, (1887), 1380 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:00,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 12:14:00,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:00,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:14:00,648 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:00,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash 12375506, now seen corresponding path program 1 times [2021-11-07 12:14:00,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:00,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461529249] [2021-11-07 12:14:00,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:00,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:14:01,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:01,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461529249] [2021-11-07 12:14:01,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461529249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:01,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:01,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:01,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128345536] [2021-11-07 12:14:01,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:01,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:01,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:01,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:01,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:01,555 INFO L87 Difference]: Start difference. First operand has 1381 states, 1369 states have (on average 1.3783783783783783) internal successors, (1887), 1380 states have internal predecessors, (1887), 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 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:03,827 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 [] [2021-11-07 12:14:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:04,048 INFO L93 Difference]: Finished difference Result 4047 states and 5536 transitions. [2021-11-07 12:14:04,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:14:04,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-11-07 12:14:04,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:04,067 INFO L225 Difference]: With dead ends: 4047 [2021-11-07 12:14:04,068 INFO L226 Difference]: Without dead ends: 2665 [2021-11-07 12:14:04,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:04,080 INFO L933 BasicCegarLoop]: 1861 mSDtfsCounter, 1834 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2301.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.11ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2379.94ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:04,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1834 Valid, 3615 Invalid, 16 Unknown, 0 Unchecked, 10.11ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2379.94ms Time] [2021-11-07 12:14:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-11-07 12:14:04,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2649. [2021-11-07 12:14:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2638 states have (on average 1.362016679302502) internal successors, (3593), 2648 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:04,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3593 transitions. [2021-11-07 12:14:04,238 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3593 transitions. Word has length 14 [2021-11-07 12:14:04,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:04,239 INFO L470 AbstractCegarLoop]: Abstraction has 2649 states and 3593 transitions. [2021-11-07 12:14:04,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:04,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3593 transitions. [2021-11-07 12:14:04,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 12:14:04,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:04,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:14:04,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:14:04,242 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:04,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:04,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1358126481, now seen corresponding path program 1 times [2021-11-07 12:14:04,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:04,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083744053] [2021-11-07 12:14:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:04,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:14:04,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:04,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083744053] [2021-11-07 12:14:04,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083744053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:04,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:04,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:04,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167411362] [2021-11-07 12:14:04,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:04,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:04,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:04,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:04,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:04,841 INFO L87 Difference]: Start difference. First operand 2649 states and 3593 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:05,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:05,243 INFO L93 Difference]: Finished difference Result 7634 states and 10327 transitions. [2021-11-07 12:14:05,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:14:05,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2021-11-07 12:14:05,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:05,259 INFO L225 Difference]: With dead ends: 7634 [2021-11-07 12:14:05,260 INFO L226 Difference]: Without dead ends: 4988 [2021-11-07 12:14:05,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:05,265 INFO L933 BasicCegarLoop]: 1873 mSDtfsCounter, 1625 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 268.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.54ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 321.74ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:05,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 3665 Invalid, 65 Unknown, 0 Unchecked, 4.54ms Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 321.74ms Time] [2021-11-07 12:14:05,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-11-07 12:14:05,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4972. [2021-11-07 12:14:05,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4972 states, 4961 states have (on average 1.3549687562991333) internal successors, (6722), 4971 states have internal predecessors, (6722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4972 states to 4972 states and 6722 transitions. [2021-11-07 12:14:05,428 INFO L78 Accepts]: Start accepts. Automaton has 4972 states and 6722 transitions. Word has length 15 [2021-11-07 12:14:05,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:05,428 INFO L470 AbstractCegarLoop]: Abstraction has 4972 states and 6722 transitions. [2021-11-07 12:14:05,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4972 states and 6722 transitions. [2021-11-07 12:14:05,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 12:14:05,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:05,430 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] [2021-11-07 12:14:05,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:14:05,430 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:05,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:05,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1461430461, now seen corresponding path program 1 times [2021-11-07 12:14:05,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:05,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443157038] [2021-11-07 12:14:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:05,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:14:06,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:06,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443157038] [2021-11-07 12:14:06,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443157038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:06,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:06,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 12:14:06,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549643393] [2021-11-07 12:14:06,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:06,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:14:06,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:06,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:14:06,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:14:06,033 INFO L87 Difference]: Start difference. First operand 4972 states and 6722 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:07,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:07,121 INFO L93 Difference]: Finished difference Result 24702 states and 33402 transitions. [2021-11-07 12:14:07,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:14:07,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2021-11-07 12:14:07,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:07,201 INFO L225 Difference]: With dead ends: 24702 [2021-11-07 12:14:07,202 INFO L226 Difference]: Without dead ends: 19733 [2021-11-07 12:14:07,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 41.79ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 12:14:07,224 INFO L933 BasicCegarLoop]: 3638 mSDtfsCounter, 10948 mSDsluCounter, 14585 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 615.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10948 SdHoareTripleChecker+Valid, 18223 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.99ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 652.13ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:07,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10948 Valid, 18223 Invalid, 79 Unknown, 0 Unchecked, 20.99ms Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 652.13ms Time] [2021-11-07 12:14:07,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19733 states. [2021-11-07 12:14:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19733 to 5014. [2021-11-07 12:14:07,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5003 states have (on average 1.3539876074355386) internal successors, (6774), 5013 states have internal predecessors, (6774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:07,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 6774 transitions. [2021-11-07 12:14:07,475 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 6774 transitions. Word has length 23 [2021-11-07 12:14:07,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:07,476 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 6774 transitions. [2021-11-07 12:14:07,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:07,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 6774 transitions. [2021-11-07 12:14:07,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 12:14:07,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:07,480 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] [2021-11-07 12:14:07,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:14:07,481 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:07,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:07,481 INFO L85 PathProgramCache]: Analyzing trace with hash 874624447, now seen corresponding path program 1 times [2021-11-07 12:14:07,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:07,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330061564] [2021-11-07 12:14:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:07,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:14:08,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:08,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330061564] [2021-11-07 12:14:08,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330061564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:08,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:08,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:08,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868346782] [2021-11-07 12:14:08,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:08,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:08,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:08,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:08,053 INFO L87 Difference]: Start difference. First operand 5014 states and 6774 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:08,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:08,377 INFO L93 Difference]: Finished difference Result 5032 states and 6790 transitions. [2021-11-07 12:14:08,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:14:08,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-07 12:14:08,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:08,387 INFO L225 Difference]: With dead ends: 5032 [2021-11-07 12:14:08,387 INFO L226 Difference]: Without dead ends: 5023 [2021-11-07 12:14:08,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:08,390 INFO L933 BasicCegarLoop]: 1865 mSDtfsCounter, 1853 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 216.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 249.69ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:08,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 1873 Invalid, 6 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 249.69ms Time] [2021-11-07 12:14:08,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2021-11-07 12:14:08,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 5014. [2021-11-07 12:14:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5003 states have (on average 1.3537877273635819) internal successors, (6773), 5013 states have internal predecessors, (6773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:08,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 6773 transitions. [2021-11-07 12:14:08,528 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 6773 transitions. Word has length 23 [2021-11-07 12:14:08,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:08,529 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 6773 transitions. [2021-11-07 12:14:08,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:08,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 6773 transitions. [2021-11-07 12:14:08,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 12:14:08,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:08,530 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] [2021-11-07 12:14:08,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:14:08,530 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:08,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash 874684029, now seen corresponding path program 1 times [2021-11-07 12:14:08,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:08,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315184773] [2021-11-07 12:14:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:08,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:14:09,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:09,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315184773] [2021-11-07 12:14:09,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315184773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:09,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:09,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:09,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858536533] [2021-11-07 12:14:09,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:09,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:09,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:09,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:09,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:09,075 INFO L87 Difference]: Start difference. First operand 5014 states and 6773 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:11,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:14:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:11,445 INFO L93 Difference]: Finished difference Result 5014 states and 6773 transitions. [2021-11-07 12:14:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:14:11,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-07 12:14:11,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:11,453 INFO L225 Difference]: With dead ends: 5014 [2021-11-07 12:14:11,454 INFO L226 Difference]: Without dead ends: 5012 [2021-11-07 12:14:11,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:11,457 INFO L933 BasicCegarLoop]: 1855 mSDtfsCounter, 1835 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2218.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2288.44ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:11,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1835 Valid, 1855 Invalid, 2 Unknown, 0 Unchecked, 2.12ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2288.44ms Time] [2021-11-07 12:14:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2021-11-07 12:14:11,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 5012. [2021-11-07 12:14:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5012 states, 5002 states have (on average 1.353658536585366) internal successors, (6771), 5011 states have internal predecessors, (6771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:11,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 6771 transitions. [2021-11-07 12:14:11,578 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 6771 transitions. Word has length 23 [2021-11-07 12:14:11,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:11,579 INFO L470 AbstractCegarLoop]: Abstraction has 5012 states and 6771 transitions. [2021-11-07 12:14:11,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:11,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 6771 transitions. [2021-11-07 12:14:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 12:14:11,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:11,582 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] [2021-11-07 12:14:11,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:14:11,583 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:11,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1345403867, now seen corresponding path program 1 times [2021-11-07 12:14:11,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:11,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447476642] [2021-11-07 12:14:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:11,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:14:12,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:12,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447476642] [2021-11-07 12:14:12,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447476642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:12,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:12,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:12,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937627402] [2021-11-07 12:14:12,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:12,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:12,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:12,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:12,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:12,110 INFO L87 Difference]: Start difference. First operand 5012 states and 6771 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:14,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:14:14,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:14,511 INFO L93 Difference]: Finished difference Result 5012 states and 6771 transitions. [2021-11-07 12:14:14,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:14:14,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-07 12:14:14,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:14,521 INFO L225 Difference]: With dead ends: 5012 [2021-11-07 12:14:14,521 INFO L226 Difference]: Without dead ends: 5010 [2021-11-07 12:14:14,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:14,525 INFO L933 BasicCegarLoop]: 1853 mSDtfsCounter, 1832 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2216.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.63ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2294.06ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:14,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1832 Valid, 1853 Invalid, 2 Unknown, 0 Unchecked, 2.63ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2294.06ms Time] [2021-11-07 12:14:14,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5010 states. [2021-11-07 12:14:14,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5010 to 5010. [2021-11-07 12:14:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5010 states, 5001 states have (on average 1.3535292941411718) internal successors, (6769), 5009 states have internal predecessors, (6769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 6769 transitions. [2021-11-07 12:14:14,659 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 6769 transitions. Word has length 24 [2021-11-07 12:14:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:14,659 INFO L470 AbstractCegarLoop]: Abstraction has 5010 states and 6769 transitions. [2021-11-07 12:14:14,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:14,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 6769 transitions. [2021-11-07 12:14:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 12:14:14,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:14,660 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] [2021-11-07 12:14:14,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:14:14,661 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:14,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:14,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1242150329, now seen corresponding path program 1 times [2021-11-07 12:14:14,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:14,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835807224] [2021-11-07 12:14:14,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:14,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:14:15,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:15,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835807224] [2021-11-07 12:14:15,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835807224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:15,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:15,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:15,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942378369] [2021-11-07 12:14:15,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:15,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:15,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:15,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:15,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:15,167 INFO L87 Difference]: Start difference. First operand 5010 states and 6769 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:17,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:14:17,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:17,622 INFO L93 Difference]: Finished difference Result 11424 states and 15459 transitions. [2021-11-07 12:14:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:14:17,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-11-07 12:14:17,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:17,635 INFO L225 Difference]: With dead ends: 11424 [2021-11-07 12:14:17,635 INFO L226 Difference]: Without dead ends: 6411 [2021-11-07 12:14:17,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:17,644 INFO L933 BasicCegarLoop]: 1847 mSDtfsCounter, 660 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2238.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 3603 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.17ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2322.21ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:17,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 3603 Invalid, 40 Unknown, 0 Unchecked, 3.17ms Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2322.21ms Time] [2021-11-07 12:14:17,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2021-11-07 12:14:17,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 6381. [2021-11-07 12:14:17,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6372 states have (on average 1.3554613935969868) internal successors, (8637), 6380 states have internal predecessors, (8637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 8637 transitions. [2021-11-07 12:14:17,794 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 8637 transitions. Word has length 25 [2021-11-07 12:14:17,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:17,795 INFO L470 AbstractCegarLoop]: Abstraction has 6381 states and 8637 transitions. [2021-11-07 12:14:17,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 8637 transitions. [2021-11-07 12:14:17,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 12:14:17,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:17,798 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] [2021-11-07 12:14:17,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:14:17,798 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:17,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:17,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1456826833, now seen corresponding path program 1 times [2021-11-07 12:14:17,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:17,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442506543] [2021-11-07 12:14:17,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:17,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:14:18,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:18,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442506543] [2021-11-07 12:14:18,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442506543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:18,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:18,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:18,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574467574] [2021-11-07 12:14:18,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:18,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:18,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:18,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:18,328 INFO L87 Difference]: Start difference. First operand 6381 states and 8637 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:20,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:14:20,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:20,951 INFO L93 Difference]: Finished difference Result 15863 states and 21540 transitions. [2021-11-07 12:14:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:14:20,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-11-07 12:14:20,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:20,972 INFO L225 Difference]: With dead ends: 15863 [2021-11-07 12:14:20,972 INFO L226 Difference]: Without dead ends: 9485 [2021-11-07 12:14:20,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:20,986 INFO L933 BasicCegarLoop]: 3454 mSDtfsCounter, 1682 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2330.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 5241 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.83ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2424.15ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:20,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1682 Valid, 5241 Invalid, 105 Unknown, 0 Unchecked, 4.83ms Time], IncrementalHoareTripleChecker [22 Valid, 82 Invalid, 1 Unknown, 0 Unchecked, 2424.15ms Time] [2021-11-07 12:14:20,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9485 states. [2021-11-07 12:14:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9485 to 9473. [2021-11-07 12:14:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9473 states, 9464 states have (on average 1.3538672865595942) internal successors, (12813), 9472 states have internal predecessors, (12813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9473 states to 9473 states and 12813 transitions. [2021-11-07 12:14:21,274 INFO L78 Accepts]: Start accepts. Automaton has 9473 states and 12813 transitions. Word has length 33 [2021-11-07 12:14:21,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:21,274 INFO L470 AbstractCegarLoop]: Abstraction has 9473 states and 12813 transitions. [2021-11-07 12:14:21,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand 9473 states and 12813 transitions. [2021-11-07 12:14:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 12:14:21,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:21,276 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] [2021-11-07 12:14:21,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 12:14:21,276 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:21,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:21,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2053211790, now seen corresponding path program 1 times [2021-11-07 12:14:21,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:21,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705436145] [2021-11-07 12:14:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:21,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:14:21,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:21,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705436145] [2021-11-07 12:14:21,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705436145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:21,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:21,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:21,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338371399] [2021-11-07 12:14:21,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:21,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:21,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:21,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:21,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:21,725 INFO L87 Difference]: Start difference. First operand 9473 states and 12813 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:22,204 INFO L93 Difference]: Finished difference Result 20290 states and 27570 transitions. [2021-11-07 12:14:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:14:22,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 12:14:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:22,229 INFO L225 Difference]: With dead ends: 20290 [2021-11-07 12:14:22,230 INFO L226 Difference]: Without dead ends: 10820 [2021-11-07 12:14:22,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:22,250 INFO L933 BasicCegarLoop]: 1854 mSDtfsCounter, 333 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 243.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 3693 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 287.74ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:22,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 3693 Invalid, 14 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 287.74ms Time] [2021-11-07 12:14:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10820 states. [2021-11-07 12:14:22,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10820 to 10765. [2021-11-07 12:14:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10765 states, 10756 states have (on average 1.3664001487541837) internal successors, (14697), 10764 states have internal predecessors, (14697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 14697 transitions. [2021-11-07 12:14:22,676 INFO L78 Accepts]: Start accepts. Automaton has 10765 states and 14697 transitions. Word has length 45 [2021-11-07 12:14:22,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:22,676 INFO L470 AbstractCegarLoop]: Abstraction has 10765 states and 14697 transitions. [2021-11-07 12:14:22,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 10765 states and 14697 transitions. [2021-11-07 12:14:22,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 12:14:22,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:22,679 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 12:14:22,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 12:14:22,679 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:22,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:22,679 INFO L85 PathProgramCache]: Analyzing trace with hash -234060580, now seen corresponding path program 1 times [2021-11-07 12:14:22,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:22,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379911308] [2021-11-07 12:14:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:22,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 12:14:23,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:23,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379911308] [2021-11-07 12:14:23,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379911308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:23,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:23,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:23,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119322305] [2021-11-07 12:14:23,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:23,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:23,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:23,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:23,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:23,184 INFO L87 Difference]: Start difference. First operand 10765 states and 14697 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:25,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:14:26,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:26,004 INFO L93 Difference]: Finished difference Result 25013 states and 34292 transitions. [2021-11-07 12:14:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:14:26,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 54 [2021-11-07 12:14:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:26,030 INFO L225 Difference]: With dead ends: 25013 [2021-11-07 12:14:26,031 INFO L226 Difference]: Without dead ends: 14251 [2021-11-07 12:14:26,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:26,047 INFO L933 BasicCegarLoop]: 3517 mSDtfsCounter, 1729 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2311.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 5258 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.26ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2491.46ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:26,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 5258 Invalid, 106 Unknown, 0 Unchecked, 3.26ms Time], IncrementalHoareTripleChecker [23 Valid, 82 Invalid, 1 Unknown, 0 Unchecked, 2491.46ms Time] [2021-11-07 12:14:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14251 states. [2021-11-07 12:14:26,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14251 to 14239. [2021-11-07 12:14:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14239 states, 14230 states have (on average 1.3647926914968376) internal successors, (19421), 14238 states have internal predecessors, (19421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14239 states to 14239 states and 19421 transitions. [2021-11-07 12:14:26,363 INFO L78 Accepts]: Start accepts. Automaton has 14239 states and 19421 transitions. Word has length 54 [2021-11-07 12:14:26,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:26,364 INFO L470 AbstractCegarLoop]: Abstraction has 14239 states and 19421 transitions. [2021-11-07 12:14:26,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 14239 states and 19421 transitions. [2021-11-07 12:14:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 12:14:26,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:26,367 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:14:26,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 12:14:26,367 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:26,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:26,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1153792279, now seen corresponding path program 1 times [2021-11-07 12:14:26,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:26,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417216673] [2021-11-07 12:14:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:26,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 12:14:26,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:26,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417216673] [2021-11-07 12:14:26,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417216673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:26,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:26,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:26,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859587518] [2021-11-07 12:14:26,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:26,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:26,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:26,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:26,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:26,994 INFO L87 Difference]: Start difference. First operand 14239 states and 19421 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:27,276 INFO L93 Difference]: Finished difference Result 28483 states and 38855 transitions. [2021-11-07 12:14:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:14:27,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 12:14:27,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:27,306 INFO L225 Difference]: With dead ends: 28483 [2021-11-07 12:14:27,307 INFO L226 Difference]: Without dead ends: 14247 [2021-11-07 12:14:27,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:27,328 INFO L933 BasicCegarLoop]: 1853 mSDtfsCounter, 0 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3701 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.49ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:27,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3701 Invalid, 6 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 9.49ms Time] [2021-11-07 12:14:27,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14247 states. [2021-11-07 12:14:27,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14247 to 14247. [2021-11-07 12:14:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14247 states, 14238 states have (on average 1.3645877229948027) internal successors, (19429), 14246 states have internal predecessors, (19429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14247 states to 14247 states and 19429 transitions. [2021-11-07 12:14:27,729 INFO L78 Accepts]: Start accepts. Automaton has 14247 states and 19429 transitions. Word has length 69 [2021-11-07 12:14:27,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:27,729 INFO L470 AbstractCegarLoop]: Abstraction has 14247 states and 19429 transitions. [2021-11-07 12:14:27,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:27,730 INFO L276 IsEmpty]: Start isEmpty. Operand 14247 states and 19429 transitions. [2021-11-07 12:14:27,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 12:14:27,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:27,732 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:14:27,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 12:14:27,733 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:27,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:27,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1155639321, now seen corresponding path program 1 times [2021-11-07 12:14:27,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:27,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3200730] [2021-11-07 12:14:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:27,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 12:14:28,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:28,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3200730] [2021-11-07 12:14:28,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3200730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:28,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:28,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:28,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148144924] [2021-11-07 12:14:28,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:28,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:28,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:28,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:28,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:28,279 INFO L87 Difference]: Start difference. First operand 14247 states and 19429 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:30,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:14:30,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:30,887 INFO L93 Difference]: Finished difference Result 28489 states and 38854 transitions. [2021-11-07 12:14:30,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:14:30,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 12:14:30,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:30,911 INFO L225 Difference]: With dead ends: 28489 [2021-11-07 12:14:30,911 INFO L226 Difference]: Without dead ends: 14245 [2021-11-07 12:14:30,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:30,929 INFO L933 BasicCegarLoop]: 2359 mSDtfsCounter, 1756 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2235.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2331.43ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:30,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1756 Valid, 3026 Invalid, 32 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2331.43ms Time] [2021-11-07 12:14:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14245 states. [2021-11-07 12:14:31,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14245 to 14108. [2021-11-07 12:14:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14108 states, 14100 states have (on average 1.3641843971631207) internal successors, (19235), 14107 states have internal predecessors, (19235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14108 states to 14108 states and 19235 transitions. [2021-11-07 12:14:31,551 INFO L78 Accepts]: Start accepts. Automaton has 14108 states and 19235 transitions. Word has length 69 [2021-11-07 12:14:31,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:31,551 INFO L470 AbstractCegarLoop]: Abstraction has 14108 states and 19235 transitions. [2021-11-07 12:14:31,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 14108 states and 19235 transitions. [2021-11-07 12:14:31,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 12:14:31,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:31,554 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-07 12:14:31,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 12:14:31,555 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:31,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:31,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1383268386, now seen corresponding path program 1 times [2021-11-07 12:14:31,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:31,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599753073] [2021-11-07 12:14:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:31,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:14:32,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:32,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599753073] [2021-11-07 12:14:32,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599753073] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:14:32,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016567832] [2021-11-07 12:14:32,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:32,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:14:32,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:14:32,091 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) [2021-11-07 12:14:32,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 12:14:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:34,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 12893 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 12:14:34,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:14:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 12:14:35,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:14:35,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016567832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:35,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:14:35,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2021-11-07 12:14:35,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392209236] [2021-11-07 12:14:35,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:35,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 12:14:35,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 12:14:35,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-07 12:14:35,134 INFO L87 Difference]: Start difference. First operand 14108 states and 19235 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:37,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:14:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:38,724 INFO L93 Difference]: Finished difference Result 41811 states and 57055 transitions. [2021-11-07 12:14:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:14:38,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 12:14:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:38,770 INFO L225 Difference]: With dead ends: 41811 [2021-11-07 12:14:38,770 INFO L226 Difference]: Without dead ends: 27666 [2021-11-07 12:14:38,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.18ms TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-07 12:14:38,794 INFO L933 BasicCegarLoop]: 3690 mSDtfsCounter, 3728 mSDsluCounter, 18397 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2853.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3728 SdHoareTripleChecker+Valid, 22087 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.19ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2972.64ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:38,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3728 Valid, 22087 Invalid, 113 Unknown, 0 Unchecked, 14.19ms Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 1 Unknown, 0 Unchecked, 2972.64ms Time] [2021-11-07 12:14:38,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27666 states. [2021-11-07 12:14:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27666 to 14113. [2021-11-07 12:14:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14113 states, 14105 states have (on average 1.362353775257001) internal successors, (19216), 14112 states have internal predecessors, (19216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14113 states to 14113 states and 19216 transitions. [2021-11-07 12:14:39,340 INFO L78 Accepts]: Start accepts. Automaton has 14113 states and 19216 transitions. Word has length 73 [2021-11-07 12:14:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:39,340 INFO L470 AbstractCegarLoop]: Abstraction has 14113 states and 19216 transitions. [2021-11-07 12:14:39,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 14113 states and 19216 transitions. [2021-11-07 12:14:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 12:14:39,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:39,343 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-07 12:14:39,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 12:14:39,545 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,SelfDestructingSolverStorable12 [2021-11-07 12:14:39,546 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:39,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:39,546 INFO L85 PathProgramCache]: Analyzing trace with hash -860246004, now seen corresponding path program 1 times [2021-11-07 12:14:39,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:39,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978098212] [2021-11-07 12:14:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:39,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 12:14:39,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:39,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978098212] [2021-11-07 12:14:39,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978098212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:39,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:39,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:14:39,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069788641] [2021-11-07 12:14:39,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:39,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:14:39,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:39,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:14:39,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:14:39,980 INFO L87 Difference]: Start difference. First operand 14113 states and 19216 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:41,560 INFO L93 Difference]: Finished difference Result 67691 states and 92366 transitions. [2021-11-07 12:14:41,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:14:41,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 85 [2021-11-07 12:14:41,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:41,651 INFO L225 Difference]: With dead ends: 67691 [2021-11-07 12:14:41,651 INFO L226 Difference]: Without dead ends: 53581 [2021-11-07 12:14:41,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:14:41,681 INFO L933 BasicCegarLoop]: 3920 mSDtfsCounter, 5365 mSDsluCounter, 5736 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5365 SdHoareTripleChecker+Valid, 9656 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.84ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 203.27ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:41,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5365 Valid, 9656 Invalid, 37 Unknown, 0 Unchecked, 9.84ms Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 203.27ms Time] [2021-11-07 12:14:41,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53581 states. [2021-11-07 12:14:42,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53581 to 14129. [2021-11-07 12:14:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14129 states, 14121 states have (on average 1.3619432051554423) internal successors, (19232), 14128 states have internal predecessors, (19232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14129 states to 14129 states and 19232 transitions. [2021-11-07 12:14:42,421 INFO L78 Accepts]: Start accepts. Automaton has 14129 states and 19232 transitions. Word has length 85 [2021-11-07 12:14:42,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:42,421 INFO L470 AbstractCegarLoop]: Abstraction has 14129 states and 19232 transitions. [2021-11-07 12:14:42,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:42,421 INFO L276 IsEmpty]: Start isEmpty. Operand 14129 states and 19232 transitions. [2021-11-07 12:14:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 12:14:42,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:42,425 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:14:42,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 12:14:42,426 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:42,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1508724510, now seen corresponding path program 1 times [2021-11-07 12:14:42,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:42,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82550300] [2021-11-07 12:14:42,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:42,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 12:14:42,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:42,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82550300] [2021-11-07 12:14:42,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82550300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:42,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:42,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:42,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199898343] [2021-11-07 12:14:42,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:42,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:42,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:42,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:42,843 INFO L87 Difference]: Start difference. First operand 14129 states and 19232 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:45,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:14:46,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:46,095 INFO L93 Difference]: Finished difference Result 41768 states and 56925 transitions. [2021-11-07 12:14:46,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:14:46,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 87 [2021-11-07 12:14:46,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:46,142 INFO L225 Difference]: With dead ends: 41768 [2021-11-07 12:14:46,142 INFO L226 Difference]: Without dead ends: 27642 [2021-11-07 12:14:46,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:46,161 INFO L933 BasicCegarLoop]: 1874 mSDtfsCounter, 1827 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2213.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.38ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2321.94ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:46,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1827 Valid, 3721 Invalid, 7 Unknown, 0 Unchecked, 3.38ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2321.94ms Time] [2021-11-07 12:14:46,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27642 states. [2021-11-07 12:14:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27642 to 27433. [2021-11-07 12:14:47,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27433 states, 27425 states have (on average 1.3648860528714677) internal successors, (37432), 27432 states have internal predecessors, (37432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27433 states to 27433 states and 37432 transitions. [2021-11-07 12:14:47,177 INFO L78 Accepts]: Start accepts. Automaton has 27433 states and 37432 transitions. Word has length 87 [2021-11-07 12:14:47,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:47,178 INFO L470 AbstractCegarLoop]: Abstraction has 27433 states and 37432 transitions. [2021-11-07 12:14:47,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:47,178 INFO L276 IsEmpty]: Start isEmpty. Operand 27433 states and 37432 transitions. [2021-11-07 12:14:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 12:14:47,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:47,183 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-07 12:14:47,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 12:14:47,183 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:47,184 INFO L85 PathProgramCache]: Analyzing trace with hash 962307733, now seen corresponding path program 1 times [2021-11-07 12:14:47,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:47,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292292107] [2021-11-07 12:14:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:47,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:47,656 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:14:47,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:47,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292292107] [2021-11-07 12:14:47,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292292107] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:14:47,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026980942] [2021-11-07 12:14:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:47,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:14:47,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:14:47,658 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) [2021-11-07 12:14:47,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 12:14:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:50,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 12994 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 12:14:50,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:14:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:14:50,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:14:50,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026980942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:50,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:14:50,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-07 12:14:50,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382372559] [2021-11-07 12:14:50,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:50,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:14:50,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:50,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:14:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:14:50,521 INFO L87 Difference]: Start difference. First operand 27433 states and 37432 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:52,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:14:55,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:14:55,408 INFO L93 Difference]: Finished difference Result 82295 states and 112291 transitions. [2021-11-07 12:14:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:14:55,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 90 [2021-11-07 12:14:55,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:14:55,551 INFO L225 Difference]: With dead ends: 82295 [2021-11-07 12:14:55,551 INFO L226 Difference]: Without dead ends: 82287 [2021-11-07 12:14:55,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:14:55,581 INFO L933 BasicCegarLoop]: 3522 mSDtfsCounter, 3777 mSDsluCounter, 3684 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2302.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3777 SdHoareTripleChecker+Valid, 7206 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.67ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2406.90ms IncrementalHoareTripleChecker+Time [2021-11-07 12:14:55,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3777 Valid, 7206 Invalid, 30 Unknown, 0 Unchecked, 6.67ms Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2406.90ms Time] [2021-11-07 12:14:55,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82287 states. [2021-11-07 12:14:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82287 to 81433. [2021-11-07 12:14:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81433 states, 81425 states have (on average 1.3671476819158734) internal successors, (111320), 81432 states have internal predecessors, (111320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:58,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81433 states to 81433 states and 111320 transitions. [2021-11-07 12:14:58,974 INFO L78 Accepts]: Start accepts. Automaton has 81433 states and 111320 transitions. Word has length 90 [2021-11-07 12:14:58,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:14:58,974 INFO L470 AbstractCegarLoop]: Abstraction has 81433 states and 111320 transitions. [2021-11-07 12:14:58,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:14:58,974 INFO L276 IsEmpty]: Start isEmpty. Operand 81433 states and 111320 transitions. [2021-11-07 12:14:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 12:14:59,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:14:59,147 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2021-11-07 12:14:59,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 12:14:59,359 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,SelfDestructingSolverStorable15 [2021-11-07 12:14:59,360 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:14:59,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:14:59,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1841486479, now seen corresponding path program 1 times [2021-11-07 12:14:59,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:14:59,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661359641] [2021-11-07 12:14:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:14:59,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:14:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:14:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 12:14:59,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:14:59,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661359641] [2021-11-07 12:14:59,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661359641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:14:59,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:14:59,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:14:59,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691154575] [2021-11-07 12:14:59,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:14:59,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:14:59,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:14:59,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:14:59,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:14:59,950 INFO L87 Difference]: Start difference. First operand 81433 states and 111320 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:15:02,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:15:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:15:06,108 INFO L93 Difference]: Finished difference Result 182950 states and 250975 transitions. [2021-11-07 12:15:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:15:06,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 91 [2021-11-07 12:15:06,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:15:06,505 INFO L225 Difference]: With dead ends: 182950 [2021-11-07 12:15:06,505 INFO L226 Difference]: Without dead ends: 101520 [2021-11-07 12:15:06,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:15:06,604 INFO L933 BasicCegarLoop]: 3504 mSDtfsCounter, 1681 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2331.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 5287 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.73ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2459.09ms IncrementalHoareTripleChecker+Time [2021-11-07 12:15:06,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 5287 Invalid, 106 Unknown, 0 Unchecked, 4.73ms Time], IncrementalHoareTripleChecker [22 Valid, 83 Invalid, 1 Unknown, 0 Unchecked, 2459.09ms Time] [2021-11-07 12:15:06,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101520 states. [2021-11-07 12:15:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101520 to 101497. [2021-11-07 12:15:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101497 states, 101489 states have (on average 1.3659411364778449) internal successors, (138628), 101496 states have internal predecessors, (138628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:15:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101497 states to 101497 states and 138628 transitions. [2021-11-07 12:15:11,152 INFO L78 Accepts]: Start accepts. Automaton has 101497 states and 138628 transitions. Word has length 91 [2021-11-07 12:15:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:15:11,152 INFO L470 AbstractCegarLoop]: Abstraction has 101497 states and 138628 transitions. [2021-11-07 12:15:11,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:15:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 101497 states and 138628 transitions. [2021-11-07 12:15:11,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 12:15:11,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:15:11,161 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2021-11-07 12:15:11,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 12:15:11,161 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 12:15:11,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:15:11,161 INFO L85 PathProgramCache]: Analyzing trace with hash 561622801, now seen corresponding path program 1 times [2021-11-07 12:15:11,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:15:11,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726641621] [2021-11-07 12:15:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:15:11,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:15:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:15:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 12:15:11,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:15:11,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726641621] [2021-11-07 12:15:11,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726641621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:15:11,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:15:11,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:15:11,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245697613] [2021-11-07 12:15:11,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:15:11,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:15:11,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:15:11,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:15:11,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:15:11,637 INFO L87 Difference]: Start difference. First operand 101497 states and 138628 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:15:16,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:15:16,965 INFO L93 Difference]: Finished difference Result 149301 states and 203538 transitions. [2021-11-07 12:15:16,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:15:16,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 91 [2021-11-07 12:15:16,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:15:17,242 INFO L225 Difference]: With dead ends: 149301 [2021-11-07 12:15:17,243 INFO L226 Difference]: Without dead ends: 139885 [2021-11-07 12:15:17,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.16ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:15:17,474 INFO L933 BasicCegarLoop]: 3530 mSDtfsCounter, 3651 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 263.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3651 SdHoareTripleChecker+Valid, 5252 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.94ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 313.64ms IncrementalHoareTripleChecker+Time [2021-11-07 12:15:17,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3651 Valid, 5252 Invalid, 14 Unknown, 0 Unchecked, 6.94ms Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 313.64ms Time] [2021-11-07 12:15:17,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139885 states.