./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.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 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 03:54:28,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 03:54:28,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 03:54:28,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 03:54:28,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 03:54:28,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 03:54:28,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 03:54:28,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 03:54:28,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 03:54:28,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 03:54:28,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 03:54:28,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 03:54:28,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 03:54:28,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 03:54:28,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 03:54:28,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 03:54:28,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 03:54:28,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 03:54:28,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 03:54:28,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 03:54:28,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 03:54:28,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 03:54:28,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 03:54:28,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 03:54:28,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 03:54:28,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 03:54:28,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 03:54:28,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 03:54:28,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 03:54:28,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 03:54:28,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 03:54:28,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 03:54:28,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 03:54:28,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 03:54:28,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 03:54:28,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 03:54:28,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 03:54:28,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 03:54:28,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 03:54:28,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 03:54:28,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 03:54:28,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 03:54:28,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 03:54:28,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 03:54:28,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 03:54:28,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 03:54:28,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 03:54:28,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 03:54:28,385 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 03:54:28,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 03:54:28,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 03:54:28,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 03:54:28,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 03:54:28,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 03:54:28,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 03:54:28,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 03:54:28,387 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 03:54:28,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 03:54:28,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 03:54:28,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 03:54:28,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 03:54:28,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:54:28,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 03:54:28,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 03:54:28,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 03:54:28,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 03:54:28,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 03:54:28,389 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 03:54:28,389 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 03:54:28,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 03:54:28,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 03:54:28,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc [2021-11-04 03:54:28,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 03:54:28,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 03:54:28,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 03:54:28,654 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 03:54:28,655 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 03:54:28,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-04 03:54:28,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ccf24470/fe16d12aef3b4bb8bb89595df0d32669/FLAGd3aba9a83 [2021-11-04 03:54:29,328 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 03:54:29,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-04 03:54:29,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ccf24470/fe16d12aef3b4bb8bb89595df0d32669/FLAGd3aba9a83 [2021-11-04 03:54:29,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ccf24470/fe16d12aef3b4bb8bb89595df0d32669 [2021-11-04 03:54:29,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 03:54:29,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 03:54:29,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 03:54:29,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 03:54:29,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 03:54:29,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:54:29" (1/1) ... [2021-11-04 03:54:29,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@723ffb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:29, skipping insertion in model container [2021-11-04 03:54:29,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:54:29" (1/1) ... [2021-11-04 03:54:29,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 03:54:29,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 03:54:30,364 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-11-04 03:54:30,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:54:30,910 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 03:54:31,008 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-11-04 03:54:31,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:54:31,222 INFO L208 MainTranslator]: Completed translation [2021-11-04 03:54:31,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:31 WrapperNode [2021-11-04 03:54:31,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 03:54:31,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 03:54:31,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 03:54:31,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 03:54:31,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:31" (1/1) ... [2021-11-04 03:54:31,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:31" (1/1) ... [2021-11-04 03:54:31,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 03:54:31,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 03:54:31,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 03:54:31,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 03:54:31,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:31" (1/1) ... [2021-11-04 03:54:31,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:31" (1/1) ... [2021-11-04 03:54:31,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:31" (1/1) ... [2021-11-04 03:54:31,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:31" (1/1) ... [2021-11-04 03:54:31,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:31" (1/1) ... [2021-11-04 03:54:32,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:31" (1/1) ... [2021-11-04 03:54:32,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:31" (1/1) ... [2021-11-04 03:54:32,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 03:54:32,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 03:54:32,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 03:54:32,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 03:54:32,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:31" (1/1) ... [2021-11-04 03:54:32,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:54:32,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:54:32,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 03:54:32,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 03:54:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 03:54:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 03:54:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 03:54:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 03:54:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 03:54:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 03:54:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 03:54:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 03:54:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 03:54:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 03:54:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 03:54:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 03:54:32,338 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 03:54:32,338 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-04 03:54:32,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-04 03:54:32,338 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_open [2021-11-04 03:54:32,338 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_open [2021-11-04 03:54:32,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 03:54:32,338 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_close [2021-11-04 03:54:32,339 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_close [2021-11-04 03:54:32,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 03:54:32,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 03:54:39,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 03:54:39,401 INFO L299 CfgBuilder]: Removed 2489 assume(true) statements. [2021-11-04 03:54:39,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:54:39 BoogieIcfgContainer [2021-11-04 03:54:39,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 03:54:39,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 03:54:39,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 03:54:39,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 03:54:39,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:54:29" (1/3) ... [2021-11-04 03:54:39,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b132133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:54:39, skipping insertion in model container [2021-11-04 03:54:39,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:54:31" (2/3) ... [2021-11-04 03:54:39,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b132133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:54:39, skipping insertion in model container [2021-11-04 03:54:39,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:54:39" (3/3) ... [2021-11-04 03:54:39,412 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-04 03:54:39,415 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 03:54:39,415 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-04 03:54:39,453 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 03:54:39,458 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 03:54:39,458 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-04 03:54:39,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 2940 states, 2927 states have (on average 1.490946361462248) internal successors, (4364), 2928 states have internal predecessors, (4364), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-04 03:54:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-04 03:54:39,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:54:39,508 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] [2021-11-04 03:54:39,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:54:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:54:39,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1824939026, now seen corresponding path program 1 times [2021-11-04 03:54:39,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:54:39,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477803528] [2021-11-04 03:54:39,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:54:39,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:54:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:54:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:54:39,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:54:39,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477803528] [2021-11-04 03:54:39,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477803528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:54:39,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:54:39,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:54:39,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91419055] [2021-11-04 03:54:39,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:54:39,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:54:39,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:54:40,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:54:40,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:54:40,027 INFO L87 Difference]: Start difference. First operand has 2940 states, 2927 states have (on average 1.490946361462248) internal successors, (4364), 2928 states have internal predecessors, (4364), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-11-04 03:54:42,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:54:44,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:55:21,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:55:21,255 INFO L93 Difference]: Finished difference Result 8754 states and 13070 transitions. [2021-11-04 03:55:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:55:21,258 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 [2021-11-04 03:55:21,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:55:21,294 INFO L225 Difference]: With dead ends: 8754 [2021-11-04 03:55:21,295 INFO L226 Difference]: Without dead ends: 5807 [2021-11-04 03:55:21,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:55:21,313 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 4047 mSDsluCounter, 4110 mSDsCounter, 0 mSdLazyCounter, 8201 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37312.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4047 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 8205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 106.25ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8201 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40000.50ms IncrementalHoareTripleChecker+Time [2021-11-04 03:55:21,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4047 Valid, 48 Invalid, 8205 Unknown, 0 Unchecked, 106.25ms Time], IncrementalHoareTripleChecker [3 Valid, 8201 Invalid, 1 Unknown, 0 Unchecked, 40000.50ms Time] [2021-11-04 03:55:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2021-11-04 03:55:21,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5807. [2021-11-04 03:55:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5807 states, 5784 states have (on average 1.4043914246196403) internal successors, (8123), 5784 states have internal predecessors, (8123), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-04 03:55:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5807 states to 5807 states and 8155 transitions. [2021-11-04 03:55:21,544 INFO L78 Accepts]: Start accepts. Automaton has 5807 states and 8155 transitions. Word has length 23 [2021-11-04 03:55:21,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:55:21,545 INFO L470 AbstractCegarLoop]: Abstraction has 5807 states and 8155 transitions. [2021-11-04 03:55:21,546 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) [2021-11-04 03:55:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 5807 states and 8155 transitions. [2021-11-04 03:55:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-04 03:55:21,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:55:21,555 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] [2021-11-04 03:55:21,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 03:55:21,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:55:21,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:55:21,559 INFO L85 PathProgramCache]: Analyzing trace with hash 666202280, now seen corresponding path program 1 times [2021-11-04 03:55:21,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:55:21,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353720909] [2021-11-04 03:55:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:55:21,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:55:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:55:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:55:22,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:55:22,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353720909] [2021-11-04 03:55:22,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353720909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:55:22,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:55:22,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 03:55:22,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978943627] [2021-11-04 03:55:22,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:55:22,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 03:55:22,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:55:22,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 03:55:22,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:55:22,020 INFO L87 Difference]: Start difference. First operand 5807 states and 8155 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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) [2021-11-04 03:55:24,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:56:32,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:56:32,708 INFO L93 Difference]: Finished difference Result 17383 states and 24454 transitions. [2021-11-04 03:56:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:56:32,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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 [2021-11-04 03:56:32,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:56:32,755 INFO L225 Difference]: With dead ends: 17383 [2021-11-04 03:56:32,755 INFO L226 Difference]: Without dead ends: 11586 [2021-11-04 03:56:32,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 142.14ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:56:32,776 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 3985 mSDsluCounter, 11584 mSDsCounter, 0 mSdLazyCounter, 16480 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65514.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3985 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 16509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 163.70ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 16480 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69316.91ms IncrementalHoareTripleChecker+Time [2021-11-04 03:56:32,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3985 Valid, 99 Invalid, 16509 Unknown, 0 Unchecked, 163.70ms Time], IncrementalHoareTripleChecker [28 Valid, 16480 Invalid, 1 Unknown, 0 Unchecked, 69316.91ms Time] [2021-11-04 03:56:32,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2021-11-04 03:56:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 11290. [2021-11-04 03:56:32,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11290 states, 11245 states have (on average 1.4038239217429969) internal successors, (15786), 11245 states have internal predecessors, (15786), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-04 03:56:33,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11290 states to 11290 states and 15866 transitions. [2021-11-04 03:56:33,012 INFO L78 Accepts]: Start accepts. Automaton has 11290 states and 15866 transitions. Word has length 25 [2021-11-04 03:56:33,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:56:33,014 INFO L470 AbstractCegarLoop]: Abstraction has 11290 states and 15866 transitions. [2021-11-04 03:56:33,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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) [2021-11-04 03:56:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 11290 states and 15866 transitions. [2021-11-04 03:56:33,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-04 03:56:33,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:56:33,032 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:56:33,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 03:56:33,032 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:56:33,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:56:33,033 INFO L85 PathProgramCache]: Analyzing trace with hash 555830267, now seen corresponding path program 1 times [2021-11-04 03:56:33,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:56:33,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933386376] [2021-11-04 03:56:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:56:33,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:56:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:56:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:56:33,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:56:33,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933386376] [2021-11-04 03:56:33,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933386376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:56:33,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:56:33,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:56:33,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609173283] [2021-11-04 03:56:33,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:56:33,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:56:33,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:56:33,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:56:33,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:56:33,356 INFO L87 Difference]: Start difference. First operand 11290 states and 15866 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:56:35,397 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:57:17,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:57:54,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:57:54,034 INFO L93 Difference]: Finished difference Result 44194 states and 62512 transitions. [2021-11-04 03:57:54,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:57:54,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-04 03:57:54,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:57:54,137 INFO L225 Difference]: With dead ends: 44194 [2021-11-04 03:57:54,137 INFO L226 Difference]: Without dead ends: 32922 [2021-11-04 03:57:54,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:57:54,168 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 8577 mSDsluCounter, 10134 mSDsCounter, 0 mSdLazyCounter, 16581 mSolverCounterSat, 96 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74192.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8581 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 16678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 170.35ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 16581 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78972.89ms IncrementalHoareTripleChecker+Time [2021-11-04 03:57:54,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8581 Valid, 64 Invalid, 16678 Unknown, 0 Unchecked, 170.35ms Time], IncrementalHoareTripleChecker [96 Valid, 16581 Invalid, 1 Unknown, 0 Unchecked, 78972.89ms Time] [2021-11-04 03:57:54,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32922 states. [2021-11-04 03:57:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32922 to 11458. [2021-11-04 03:57:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11458 states, 11413 states have (on average 1.3978796109699465) internal successors, (15954), 11413 states have internal predecessors, (15954), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-04 03:57:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11458 states to 11458 states and 16034 transitions. [2021-11-04 03:57:54,574 INFO L78 Accepts]: Start accepts. Automaton has 11458 states and 16034 transitions. Word has length 66 [2021-11-04 03:57:54,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:57:54,576 INFO L470 AbstractCegarLoop]: Abstraction has 11458 states and 16034 transitions. [2021-11-04 03:57:54,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:54,577 INFO L276 IsEmpty]: Start isEmpty. Operand 11458 states and 16034 transitions. [2021-11-04 03:57:54,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-04 03:57:54,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:57:54,586 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:57:54,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 03:57:54,586 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:57:54,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:57:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash -196678620, now seen corresponding path program 1 times [2021-11-04 03:57:54,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:57:54,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891483187] [2021-11-04 03:57:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:57:54,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:57:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:57:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:57:54,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:57:54,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891483187] [2021-11-04 03:57:54,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891483187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:57:54,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:57:54,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:57:54,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408515085] [2021-11-04 03:57:54,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:57:54,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:57:54,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:57:54,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:57:54,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:57:54,842 INFO L87 Difference]: Start difference. First operand 11458 states and 16034 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:57:56,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:58:33,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:58:33,880 INFO L93 Difference]: Finished difference Result 22958 states and 32127 transitions. [2021-11-04 03:58:33,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:58:33,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 [2021-11-04 03:58:33,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:58:33,912 INFO L225 Difference]: With dead ends: 22958 [2021-11-04 03:58:33,912 INFO L226 Difference]: Without dead ends: 11518 [2021-11-04 03:58:33,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:58:33,937 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 4086 mSDsCounter, 0 mSdLazyCounter, 8185 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36194.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 8194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.06ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8185 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38444.01ms IncrementalHoareTripleChecker+Time [2021-11-04 03:58:33,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 32 Invalid, 8194 Unknown, 0 Unchecked, 49.06ms Time], IncrementalHoareTripleChecker [8 Valid, 8185 Invalid, 1 Unknown, 0 Unchecked, 38444.01ms Time] [2021-11-04 03:58:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11518 states. [2021-11-04 03:58:34,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11518 to 11478. [2021-11-04 03:58:34,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11478 states, 11433 states have (on average 1.3971835913583486) internal successors, (15974), 11433 states have internal predecessors, (15974), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-04 03:58:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11478 states to 11478 states and 16054 transitions. [2021-11-04 03:58:34,281 INFO L78 Accepts]: Start accepts. Automaton has 11478 states and 16054 transitions. Word has length 69 [2021-11-04 03:58:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:58:34,282 INFO L470 AbstractCegarLoop]: Abstraction has 11478 states and 16054 transitions. [2021-11-04 03:58:34,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:58:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 11478 states and 16054 transitions. [2021-11-04 03:58:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-04 03:58:34,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:58:34,292 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:58:34,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 03:58:34,292 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 03:58:34,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:58:34,293 INFO L85 PathProgramCache]: Analyzing trace with hash 660079663, now seen corresponding path program 1 times [2021-11-04 03:58:34,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:58:34,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053588974] [2021-11-04 03:58:34,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:58:34,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:58:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:58:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:58:34,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:58:34,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053588974] [2021-11-04 03:58:34,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053588974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:58:34,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:58:34,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:58:34,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912929801] [2021-11-04 03:58:34,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:58:34,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:58:34,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:58:34,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:58:34,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:58:34,531 INFO L87 Difference]: Start difference. First operand 11478 states and 16054 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:58:36,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:58:41,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:00:11,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:00:11,295 INFO L93 Difference]: Finished difference Result 44898 states and 62958 transitions. [2021-11-04 04:00:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:00:11,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 [2021-11-04 04:00:11,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:00:11,386 INFO L225 Difference]: With dead ends: 44898 [2021-11-04 04:00:11,387 INFO L226 Difference]: Without dead ends: 33438 [2021-11-04 04:00:11,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.83ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:00:11,426 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 10268 mSDsluCounter, 13470 mSDsCounter, 0 mSdLazyCounter, 20672 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89733.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10272 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 20691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 163.61ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 20672 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94997.03ms IncrementalHoareTripleChecker+Time [2021-11-04 04:00:11,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10272 Valid, 64 Invalid, 20691 Unknown, 0 Unchecked, 163.61ms Time], IncrementalHoareTripleChecker [18 Valid, 20672 Invalid, 1 Unknown, 0 Unchecked, 94997.03ms Time] [2021-11-04 04:00:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33438 states. [2021-11-04 04:00:11,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33438 to 11510. [2021-11-04 04:00:11,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11510 states, 11465 states have (on average 1.3960750109027475) internal successors, (16006), 11465 states have internal predecessors, (16006), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-04 04:00:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11510 states to 11510 states and 16086 transitions. [2021-11-04 04:00:11,816 INFO L78 Accepts]: Start accepts. Automaton has 11510 states and 16086 transitions. Word has length 69 [2021-11-04 04:00:11,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:00:11,817 INFO L470 AbstractCegarLoop]: Abstraction has 11510 states and 16086 transitions. [2021-11-04 04:00:11,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:00:11,817 INFO L276 IsEmpty]: Start isEmpty. Operand 11510 states and 16086 transitions. [2021-11-04 04:00:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-04 04:00:11,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:00:11,828 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:00:11,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 04:00:11,829 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:00:11,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:00:11,829 INFO L85 PathProgramCache]: Analyzing trace with hash -436548035, now seen corresponding path program 1 times [2021-11-04 04:00:11,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:00:11,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360288777] [2021-11-04 04:00:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:00:11,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:00:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:00:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:00:12,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:00:12,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360288777] [2021-11-04 04:00:12,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360288777] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:00:12,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091559018] [2021-11-04 04:00:12,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:00:12,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:00:12,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:00:12,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 04:00:12,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 04:00:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:00:13,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 04:00:13,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:00:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 04:00:13,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:00:13,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091559018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:00:13,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 04:00:13,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 04:00:13,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513753356] [2021-11-04 04:00:13,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:00:13,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:00:13,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:00:13,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:00:13,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:00:13,483 INFO L87 Difference]: Start difference. First operand 11510 states and 16086 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:00:15,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:01:08,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:01:08,376 INFO L93 Difference]: Finished difference Result 31898 states and 44652 transitions. [2021-11-04 04:01:08,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:01:08,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-04 04:01:08,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:01:08,423 INFO L225 Difference]: With dead ends: 31898 [2021-11-04 04:01:08,423 INFO L226 Difference]: Without dead ends: 20406 [2021-11-04 04:01:08,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 75.70ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:01:08,449 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 3162 mSDsluCounter, 4093 mSDsCounter, 0 mSdLazyCounter, 11364 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50570.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3164 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 11371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.54ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11364 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53799.39ms IncrementalHoareTripleChecker+Time [2021-11-04 04:01:08,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3164 Valid, 38 Invalid, 11371 Unknown, 0 Unchecked, 68.54ms Time], IncrementalHoareTripleChecker [6 Valid, 11364 Invalid, 1 Unknown, 0 Unchecked, 53799.39ms Time] [2021-11-04 04:01:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20406 states. [2021-11-04 04:01:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20406 to 11526. [2021-11-04 04:01:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11526 states, 11481 states have (on average 1.3955230380628865) internal successors, (16022), 11481 states have internal predecessors, (16022), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-04 04:01:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11526 states to 11526 states and 16102 transitions. [2021-11-04 04:01:08,879 INFO L78 Accepts]: Start accepts. Automaton has 11526 states and 16102 transitions. Word has length 72 [2021-11-04 04:01:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:01:08,879 INFO L470 AbstractCegarLoop]: Abstraction has 11526 states and 16102 transitions. [2021-11-04 04:01:08,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:01:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 11526 states and 16102 transitions. [2021-11-04 04:01:08,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-04 04:01:08,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:01:08,891 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:01:08,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 04:01:09,107 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,SelfDestructingSolverStorable5 [2021-11-04 04:01:09,107 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:01:09,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:01:09,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1725726798, now seen corresponding path program 1 times [2021-11-04 04:01:09,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:01:09,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725501207] [2021-11-04 04:01:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:01:09,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:01:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:01:09,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:01:09,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:01:09,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725501207] [2021-11-04 04:01:09,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725501207] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:01:09,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070206630] [2021-11-04 04:01:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:01:09,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:01:09,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:01:09,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 04:01:09,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 04:01:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:01:10,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 04:01:10,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:01:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:01:10,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 04:01:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:01:10,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070206630] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 04:01:10,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 04:01:10,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-04 04:01:10,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817723964] [2021-11-04 04:01:10,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 04:01:10,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 04:01:10,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:01:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 04:01:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:01:10,928 INFO L87 Difference]: Start difference. First operand 11526 states and 16102 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:01:12,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:01:17,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:02:08,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:02:08,545 INFO L93 Difference]: Finished difference Result 23214 states and 32423 transitions. [2021-11-04 04:02:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 04:02:08,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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 75 [2021-11-04 04:02:08,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:02:08,569 INFO L225 Difference]: With dead ends: 23214 [2021-11-04 04:02:08,569 INFO L226 Difference]: Without dead ends: 11706 [2021-11-04 04:02:08,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.08ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:02:08,586 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 68 mSDsluCounter, 8172 mSDsCounter, 0 mSdLazyCounter, 12310 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53846.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 12360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 77.54ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 12310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56758.23ms IncrementalHoareTripleChecker+Time [2021-11-04 04:02:08,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 48 Invalid, 12360 Unknown, 0 Unchecked, 77.54ms Time], IncrementalHoareTripleChecker [49 Valid, 12310 Invalid, 1 Unknown, 0 Unchecked, 56758.23ms Time] [2021-11-04 04:02:08,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11706 states. [2021-11-04 04:02:08,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11706 to 11706. [2021-11-04 04:02:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11706 states, 11661 states have (on average 1.3894177171769144) internal successors, (16202), 11661 states have internal predecessors, (16202), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-04 04:02:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11706 states to 11706 states and 16282 transitions. [2021-11-04 04:02:08,866 INFO L78 Accepts]: Start accepts. Automaton has 11706 states and 16282 transitions. Word has length 75 [2021-11-04 04:02:08,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:02:08,867 INFO L470 AbstractCegarLoop]: Abstraction has 11706 states and 16282 transitions. [2021-11-04 04:02:08,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:02:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 11706 states and 16282 transitions. [2021-11-04 04:02:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-04 04:02:08,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:02:08,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:02:08,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 04:02:09,102 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,SelfDestructingSolverStorable6 [2021-11-04 04:02:09,102 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:02:09,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:02:09,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1409683414, now seen corresponding path program 1 times [2021-11-04 04:02:09,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:02:09,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222436873] [2021-11-04 04:02:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:02:09,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:02:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:02:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:02:09,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:02:09,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222436873] [2021-11-04 04:02:09,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222436873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:02:09,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:02:09,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:02:09,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380788073] [2021-11-04 04:02:09,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:02:09,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:02:09,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:02:09,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:02:09,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:02:09,323 INFO L87 Difference]: Start difference. First operand 11706 states and 16282 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:02:11,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:02:36,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:02:59,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:02:59,511 INFO L93 Difference]: Finished difference Result 31370 states and 43644 transitions. [2021-11-04 04:02:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:02:59,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2021-11-04 04:02:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:02:59,549 INFO L225 Difference]: With dead ends: 31370 [2021-11-04 04:02:59,549 INFO L226 Difference]: Without dead ends: 19682 [2021-11-04 04:02:59,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:02:59,573 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 3084 mSDsluCounter, 3733 mSDsCounter, 0 mSdLazyCounter, 10133 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46070.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3086 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 10147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.96ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 10133 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49051.35ms IncrementalHoareTripleChecker+Time [2021-11-04 04:02:59,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3086 Valid, 38 Invalid, 10147 Unknown, 0 Unchecked, 60.96ms Time], IncrementalHoareTripleChecker [13 Valid, 10133 Invalid, 1 Unknown, 0 Unchecked, 49051.35ms Time] [2021-11-04 04:02:59,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19682 states. [2021-11-04 04:02:59,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19682 to 12206. [2021-11-04 04:02:59,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12206 states, 12161 states have (on average 1.3873859057643285) internal successors, (16872), 12161 states have internal predecessors, (16872), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-04 04:02:59,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12206 states to 12206 states and 16952 transitions. [2021-11-04 04:02:59,918 INFO L78 Accepts]: Start accepts. Automaton has 12206 states and 16952 transitions. Word has length 77 [2021-11-04 04:02:59,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:02:59,919 INFO L470 AbstractCegarLoop]: Abstraction has 12206 states and 16952 transitions. [2021-11-04 04:02:59,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:02:59,919 INFO L276 IsEmpty]: Start isEmpty. Operand 12206 states and 16952 transitions. [2021-11-04 04:02:59,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-04 04:02:59,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:02:59,939 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:02:59,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 04:02:59,940 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:02:59,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:02:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1526298904, now seen corresponding path program 1 times [2021-11-04 04:02:59,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:02:59,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779645023] [2021-11-04 04:02:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:02:59,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:03:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:03:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 04:03:00,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:03:00,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779645023] [2021-11-04 04:03:00,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779645023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:03:00,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:03:00,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:03:00,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792571538] [2021-11-04 04:03:00,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:03:00,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:03:00,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:03:00,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:03:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:03:00,124 INFO L87 Difference]: Start difference. First operand 12206 states and 16952 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:03:02,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:03:39,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:03:39,004 INFO L93 Difference]: Finished difference Result 24494 states and 34043 transitions. [2021-11-04 04:03:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:03:39,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2021-11-04 04:03:39,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:03:39,028 INFO L225 Difference]: With dead ends: 24494 [2021-11-04 04:03:39,028 INFO L226 Difference]: Without dead ends: 12306 [2021-11-04 04:03:39,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:03:39,049 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 366 mSDsluCounter, 3706 mSDsCounter, 0 mSdLazyCounter, 7825 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35719.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 7849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.57ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 7825 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38083.69ms IncrementalHoareTripleChecker+Time [2021-11-04 04:03:39,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 32 Invalid, 7849 Unknown, 0 Unchecked, 47.57ms Time], IncrementalHoareTripleChecker [23 Valid, 7825 Invalid, 1 Unknown, 0 Unchecked, 38083.69ms Time] [2021-11-04 04:03:39,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12306 states. [2021-11-04 04:03:39,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12306 to 12286. [2021-11-04 04:03:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12286 states, 12241 states have (on average 1.3848541785801813) internal successors, (16952), 12241 states have internal predecessors, (16952), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-04 04:03:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12286 states to 12286 states and 17032 transitions. [2021-11-04 04:03:39,360 INFO L78 Accepts]: Start accepts. Automaton has 12286 states and 17032 transitions. Word has length 81 [2021-11-04 04:03:39,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:03:39,360 INFO L470 AbstractCegarLoop]: Abstraction has 12286 states and 17032 transitions. [2021-11-04 04:03:39,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:03:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 12286 states and 17032 transitions. [2021-11-04 04:03:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-04 04:03:39,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:03:39,373 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:03:39,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 04:03:39,374 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:03:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:03:39,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1662728223, now seen corresponding path program 1 times [2021-11-04 04:03:39,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:03:39,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911842364] [2021-11-04 04:03:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:03:39,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:03:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:03:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:03:39,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:03:39,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911842364] [2021-11-04 04:03:39,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911842364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:03:39,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:03:39,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:03:39,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325633551] [2021-11-04 04:03:39,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:03:39,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:03:39,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:03:39,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:03:39,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:03:39,629 INFO L87 Difference]: Start difference. First operand 12286 states and 17032 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:03:41,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:04:12,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:04:52,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:04:52,765 INFO L93 Difference]: Finished difference Result 42782 states and 59263 transitions. [2021-11-04 04:04:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 04:04:52,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-04 04:04:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:04:52,903 INFO L225 Difference]: With dead ends: 42782 [2021-11-04 04:04:52,903 INFO L226 Difference]: Without dead ends: 30514 [2021-11-04 04:04:52,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.29ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:04:52,922 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 5853 mSDsluCounter, 8527 mSDsCounter, 0 mSdLazyCounter, 15901 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67300.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5853 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 15928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 114.43ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 15901 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71346.89ms IncrementalHoareTripleChecker+Time [2021-11-04 04:04:52,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5853 Valid, 69 Invalid, 15928 Unknown, 0 Unchecked, 114.43ms Time], IncrementalHoareTripleChecker [26 Valid, 15901 Invalid, 1 Unknown, 0 Unchecked, 71346.89ms Time] [2021-11-04 04:04:52,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30514 states. [2021-11-04 04:04:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30514 to 22496. [2021-11-04 04:04:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22496 states, 22411 states have (on average 1.3840078532863327) internal successors, (31017), 22407 states have internal predecessors, (31017), 60 states have call successors, (60), 24 states have call predecessors, (60), 24 states have return successors, (180), 64 states have call predecessors, (180), 60 states have call successors, (180) [2021-11-04 04:04:53,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22496 states to 22496 states and 31257 transitions. [2021-11-04 04:04:53,526 INFO L78 Accepts]: Start accepts. Automaton has 22496 states and 31257 transitions. Word has length 84 [2021-11-04 04:04:53,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:04:53,526 INFO L470 AbstractCegarLoop]: Abstraction has 22496 states and 31257 transitions. [2021-11-04 04:04:53,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:04:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 22496 states and 31257 transitions. [2021-11-04 04:04:53,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-04 04:04:53,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:04:53,547 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:04:53,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 04:04:53,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:04:53,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:04:53,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2096457309, now seen corresponding path program 1 times [2021-11-04 04:04:53,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:04:53,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996963418] [2021-11-04 04:04:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:04:53,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:04:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:04:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:04:53,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:04:53,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996963418] [2021-11-04 04:04:53,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996963418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:04:53,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:04:53,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:04:53,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897395919] [2021-11-04 04:04:53,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:04:53,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:04:53,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:04:53,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:04:53,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:04:53,763 INFO L87 Difference]: Start difference. First operand 22496 states and 31257 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:04:55,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:05:43,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:05:43,604 INFO L93 Difference]: Finished difference Result 61656 states and 85481 transitions. [2021-11-04 04:05:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:05:43,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-04 04:05:43,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:05:43,694 INFO L225 Difference]: With dead ends: 61656 [2021-11-04 04:05:43,695 INFO L226 Difference]: Without dead ends: 39178 [2021-11-04 04:05:43,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:05:43,737 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 3126 mSDsluCounter, 3930 mSDsCounter, 0 mSdLazyCounter, 9897 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45065.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3128 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 9908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.91ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 9897 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48030.13ms IncrementalHoareTripleChecker+Time [2021-11-04 04:05:43,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3128 Valid, 38 Invalid, 9908 Unknown, 0 Unchecked, 60.91ms Time], IncrementalHoareTripleChecker [10 Valid, 9897 Invalid, 1 Unknown, 0 Unchecked, 48030.13ms Time] [2021-11-04 04:05:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39178 states. [2021-11-04 04:05:44,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39178 to 22516. [2021-11-04 04:05:44,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22516 states, 22431 states have (on average 1.3836654629753466) internal successors, (31037), 22427 states have internal predecessors, (31037), 60 states have call successors, (60), 24 states have call predecessors, (60), 24 states have return successors, (180), 64 states have call predecessors, (180), 60 states have call successors, (180) [2021-11-04 04:05:44,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22516 states to 22516 states and 31277 transitions. [2021-11-04 04:05:44,448 INFO L78 Accepts]: Start accepts. Automaton has 22516 states and 31277 transitions. Word has length 84 [2021-11-04 04:05:44,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:05:44,448 INFO L470 AbstractCegarLoop]: Abstraction has 22516 states and 31277 transitions. [2021-11-04 04:05:44,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:05:44,448 INFO L276 IsEmpty]: Start isEmpty. Operand 22516 states and 31277 transitions. [2021-11-04 04:05:44,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-04 04:05:44,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:05:44,466 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:05:44,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 04:05:44,467 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:05:44,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:05:44,467 INFO L85 PathProgramCache]: Analyzing trace with hash 67871199, now seen corresponding path program 1 times [2021-11-04 04:05:44,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:05:44,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181421345] [2021-11-04 04:05:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:05:44,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:05:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:05:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:05:44,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:05:44,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181421345] [2021-11-04 04:05:44,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181421345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:05:44,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:05:44,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:05:44,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928677792] [2021-11-04 04:05:44,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:05:44,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:05:44,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:05:44,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:05:44,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:05:44,717 INFO L87 Difference]: Start difference. First operand 22516 states and 31277 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:05:46,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:07:02,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:07:02,801 INFO L93 Difference]: Finished difference Result 46734 states and 65013 transitions. [2021-11-04 04:07:02,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:07:02,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 84 [2021-11-04 04:07:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:07:02,858 INFO L225 Difference]: With dead ends: 46734 [2021-11-04 04:07:02,858 INFO L226 Difference]: Without dead ends: 24236 [2021-11-04 04:07:02,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.40ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-04 04:07:02,894 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 384 mSDsluCounter, 10417 mSDsCounter, 0 mSdLazyCounter, 16359 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72889.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 16374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 120.28ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 16359 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76674.00ms IncrementalHoareTripleChecker+Time [2021-11-04 04:07:02,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 64 Invalid, 16374 Unknown, 0 Unchecked, 120.28ms Time], IncrementalHoareTripleChecker [14 Valid, 16359 Invalid, 1 Unknown, 0 Unchecked, 76674.00ms Time] [2021-11-04 04:07:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24236 states. [2021-11-04 04:07:03,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24236 to 22776. [2021-11-04 04:07:03,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22776 states, 22691 states have (on average 1.3845577541756644) internal successors, (31417), 22687 states have internal predecessors, (31417), 60 states have call successors, (60), 24 states have call predecessors, (60), 24 states have return successors, (180), 64 states have call predecessors, (180), 60 states have call successors, (180) [2021-11-04 04:07:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22776 states to 22776 states and 31657 transitions. [2021-11-04 04:07:03,566 INFO L78 Accepts]: Start accepts. Automaton has 22776 states and 31657 transitions. Word has length 84 [2021-11-04 04:07:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:07:03,566 INFO L470 AbstractCegarLoop]: Abstraction has 22776 states and 31657 transitions. [2021-11-04 04:07:03,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:07:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 22776 states and 31657 transitions. [2021-11-04 04:07:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-04 04:07:03,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:07:03,587 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-04 04:07:03,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-04 04:07:03,588 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:07:03,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:07:03,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1881892437, now seen corresponding path program 2 times [2021-11-04 04:07:03,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:07:03,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476543964] [2021-11-04 04:07:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:07:03,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:07:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:07:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-04 04:07:04,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:07:04,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476543964] [2021-11-04 04:07:04,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476543964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:07:04,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:07:04,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:07:04,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490027503] [2021-11-04 04:07:04,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:07:04,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:07:04,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:07:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:07:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:07:04,460 INFO L87 Difference]: Start difference. First operand 22776 states and 31657 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:07:06,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:07:12,442 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:08:16,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:08:19,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15