./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.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 d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 06:46:23,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 06:46:23,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 06:46:23,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 06:46:23,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 06:46:23,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 06:46:23,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 06:46:23,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 06:46:23,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 06:46:23,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 06:46:23,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 06:46:23,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 06:46:23,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 06:46:23,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 06:46:23,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 06:46:23,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 06:46:23,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 06:46:23,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 06:46:23,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 06:46:23,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 06:46:23,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 06:46:23,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 06:46:23,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 06:46:23,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 06:46:23,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 06:46:23,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 06:46:23,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 06:46:23,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 06:46:23,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 06:46:23,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 06:46:23,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 06:46:23,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 06:46:23,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 06:46:23,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 06:46:23,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 06:46:23,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 06:46:23,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 06:46:23,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 06:46:23,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 06:46:23,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 06:46:23,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 06:46:23,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 06:46:23,427 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 06:46:23,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 06:46:23,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 06:46:23,431 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 06:46:23,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 06:46:23,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 06:46:23,433 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 06:46:23,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 06:46:23,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 06:46:23,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 06:46:23,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 06:46:23,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 06:46:23,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 06:46:23,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 06:46:23,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 06:46:23,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 06:46:23,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 06:46:23,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 06:46:23,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 06:46:23,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:46:23,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 06:46:23,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 06:46:23,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 06:46:23,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 06:46:23,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 06:46:23,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 06:46:23,437 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 06:46:23,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 06:46:23,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 06:46:23,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 [2021-11-04 06:46:23,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 06:46:23,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 06:46:23,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 06:46:23,664 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 06:46:23,665 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 06:46:23,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-04 06:46:23,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348198dea/657d3c5433f5444eac5f7f29cae0626e/FLAGa43bc7e39 [2021-11-04 06:46:24,301 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 06:46:24,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-04 06:46:24,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348198dea/657d3c5433f5444eac5f7f29cae0626e/FLAGa43bc7e39 [2021-11-04 06:46:24,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/348198dea/657d3c5433f5444eac5f7f29cae0626e [2021-11-04 06:46:24,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 06:46:24,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 06:46:24,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 06:46:24,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 06:46:24,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 06:46:24,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:46:24" (1/1) ... [2021-11-04 06:46:24,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f9e6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:24, skipping insertion in model container [2021-11-04 06:46:24,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:46:24" (1/1) ... [2021-11-04 06:46:24,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 06:46:24,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 06:46:25,772 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2021-11-04 06:46:25,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:46:25,905 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 06:46:26,108 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2021-11-04 06:46:26,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:46:26,221 INFO L208 MainTranslator]: Completed translation [2021-11-04 06:46:26,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:26 WrapperNode [2021-11-04 06:46:26,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 06:46:26,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 06:46:26,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 06:46:26,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 06:46:26,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:26" (1/1) ... [2021-11-04 06:46:26,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:26" (1/1) ... [2021-11-04 06:46:26,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 06:46:26,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 06:46:26,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 06:46:26,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 06:46:26,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:26" (1/1) ... [2021-11-04 06:46:26,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:26" (1/1) ... [2021-11-04 06:46:26,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:26" (1/1) ... [2021-11-04 06:46:26,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:26" (1/1) ... [2021-11-04 06:46:26,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:26" (1/1) ... [2021-11-04 06:46:26,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:26" (1/1) ... [2021-11-04 06:46:27,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:26" (1/1) ... [2021-11-04 06:46:27,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 06:46:27,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 06:46:27,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 06:46:27,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 06:46:27,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:26" (1/1) ... [2021-11-04 06:46:27,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:46:27,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:46:27,084 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 06:46:27,097 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 06:46:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 06:46:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 06:46:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 06:46:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 06:46:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 06:46:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 06:46:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 06:46:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 06:46:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 06:46:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 06:46:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 06:46:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 06:46:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 06:46:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 06:46:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 06:46:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 06:46:29,939 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 06:46:29,940 INFO L299 CfgBuilder]: Removed 2088 assume(true) statements. [2021-11-04 06:46:29,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:46:29 BoogieIcfgContainer [2021-11-04 06:46:29,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 06:46:29,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 06:46:29,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 06:46:29,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 06:46:29,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 06:46:24" (1/3) ... [2021-11-04 06:46:29,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7946e5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:46:29, skipping insertion in model container [2021-11-04 06:46:29,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:46:26" (2/3) ... [2021-11-04 06:46:29,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7946e5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:46:29, skipping insertion in model container [2021-11-04 06:46:29,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:46:29" (3/3) ... [2021-11-04 06:46:29,952 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-04 06:46:29,958 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 06:46:29,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2021-11-04 06:46:30,015 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 06:46:30,032 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 06:46:30,033 INFO L340 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2021-11-04 06:46:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 2619 states, 2576 states have (on average 1.529503105590062) internal successors, (3940), 2618 states have internal predecessors, (3940), 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 06:46:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-04 06:46:30,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:46:30,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:46:30,092 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:46:30,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:46:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash -571058910, now seen corresponding path program 1 times [2021-11-04 06:46:30,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:46:30,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617380913] [2021-11-04 06:46:30,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:46:30,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:46:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:46:30,494 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 06:46:30,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:46:30,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617380913] [2021-11-04 06:46:30,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617380913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:46:30,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:46:30,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:46:30,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298208884] [2021-11-04 06:46:30,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:46:30,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 06:46:30,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:46:30,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 06:46:30,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 06:46:30,529 INFO L87 Difference]: Start difference. First operand has 2619 states, 2576 states have (on average 1.529503105590062) internal successors, (3940), 2618 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 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 06:46:32,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:46:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:46:37,970 INFO L93 Difference]: Finished difference Result 5234 states and 7875 transitions. [2021-11-04 06:46:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 06:46:37,972 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-04 06:46:37,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:46:38,001 INFO L225 Difference]: With dead ends: 5234 [2021-11-04 06:46:38,001 INFO L226 Difference]: Without dead ends: 2611 [2021-11-04 06:46:38,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 06:46:38,016 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3866 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6395.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 3867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3866 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7269.57ms IncrementalHoareTripleChecker+Time [2021-11-04 06:46:38,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 3867 Unknown, 0 Unchecked, 7.89ms Time], IncrementalHoareTripleChecker [0 Valid, 3866 Invalid, 1 Unknown, 0 Unchecked, 7269.57ms Time] [2021-11-04 06:46:38,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-11-04 06:46:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2611. [2021-11-04 06:46:38,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2569 states have (on average 1.5021409108602568) internal successors, (3859), 2610 states have internal predecessors, (3859), 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 06:46:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3859 transitions. [2021-11-04 06:46:38,137 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3859 transitions. Word has length 71 [2021-11-04 06:46:38,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:46:38,138 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3859 transitions. [2021-11-04 06:46:38,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 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 06:46:38,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3859 transitions. [2021-11-04 06:46:38,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-04 06:46:38,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:46:38,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:46:38,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 06:46:38,141 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:46:38,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:46:38,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1311868076, now seen corresponding path program 1 times [2021-11-04 06:46:38,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:46:38,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711741202] [2021-11-04 06:46:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:46:38,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:46:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:46:38,343 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 06:46:38,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:46:38,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711741202] [2021-11-04 06:46:38,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711741202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:46:38,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:46:38,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:46:38,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737482510] [2021-11-04 06:46:38,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:46:38,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:46:38,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:46:38,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:46:38,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:46:38,353 INFO L87 Difference]: Start difference. First operand 2611 states and 3859 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 06:46:40,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:46:48,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:46:48,439 INFO L93 Difference]: Finished difference Result 5192 states and 7693 transitions. [2021-11-04 06:46:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:46:48,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-04 06:46:48,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:46:48,451 INFO L225 Difference]: With dead ends: 5192 [2021-11-04 06:46:48,451 INFO L226 Difference]: Without dead ends: 2617 [2021-11-04 06:46:48,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:46:48,456 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3795 mSDsCounter, 0 mSdLazyCounter, 7710 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8917.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.58ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 7710 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9944.31ms IncrementalHoareTripleChecker+Time [2021-11-04 06:46:48,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 7721 Unknown, 0 Unchecked, 15.58ms Time], IncrementalHoareTripleChecker [10 Valid, 7710 Invalid, 1 Unknown, 0 Unchecked, 9944.31ms Time] [2021-11-04 06:46:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2021-11-04 06:46:48,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2617. [2021-11-04 06:46:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2617 states, 2575 states have (on average 1.5009708737864078) internal successors, (3865), 2616 states have internal predecessors, (3865), 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 06:46:48,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 3865 transitions. [2021-11-04 06:46:48,505 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 3865 transitions. Word has length 71 [2021-11-04 06:46:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:46:48,505 INFO L470 AbstractCegarLoop]: Abstraction has 2617 states and 3865 transitions. [2021-11-04 06:46:48,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 06:46:48,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 3865 transitions. [2021-11-04 06:46:48,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-04 06:46:48,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:46:48,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:46:48,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 06:46:48,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:46:48,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:46:48,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2009601516, now seen corresponding path program 1 times [2021-11-04 06:46:48,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:46:48,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118280147] [2021-11-04 06:46:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:46:48,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:46:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:46:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 06:46:48,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:46:48,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118280147] [2021-11-04 06:46:48,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118280147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:46:48,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:46:48,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:46:48,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234817416] [2021-11-04 06:46:48,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:46:48,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:46:48,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:46:48,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:46:48,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:46:48,665 INFO L87 Difference]: Start difference. First operand 2617 states and 3865 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 06:46:50,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:46:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:46:58,663 INFO L93 Difference]: Finished difference Result 5189 states and 7684 transitions. [2021-11-04 06:46:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:46:58,664 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 06:46:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:46:58,675 INFO L225 Difference]: With dead ends: 5189 [2021-11-04 06:46:58,675 INFO L226 Difference]: Without dead ends: 2620 [2021-11-04 06:46:58,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:46:58,680 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3795 mSDsCounter, 0 mSdLazyCounter, 7713 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8845.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.40ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7713 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9886.46ms IncrementalHoareTripleChecker+Time [2021-11-04 06:46:58,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 7718 Unknown, 0 Unchecked, 12.40ms Time], IncrementalHoareTripleChecker [4 Valid, 7713 Invalid, 1 Unknown, 0 Unchecked, 9886.46ms Time] [2021-11-04 06:46:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2021-11-04 06:46:58,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2620. [2021-11-04 06:46:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2578 states have (on average 1.5003878975950349) internal successors, (3868), 2619 states have internal predecessors, (3868), 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 06:46:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3868 transitions. [2021-11-04 06:46:58,733 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3868 transitions. Word has length 77 [2021-11-04 06:46:58,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:46:58,735 INFO L470 AbstractCegarLoop]: Abstraction has 2620 states and 3868 transitions. [2021-11-04 06:46:58,735 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 06:46:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3868 transitions. [2021-11-04 06:46:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-04 06:46:58,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:46:58,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:46:58,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 06:46:58,740 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:46:58,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:46:58,741 INFO L85 PathProgramCache]: Analyzing trace with hash -535021734, now seen corresponding path program 1 times [2021-11-04 06:46:58,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:46:58,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311406284] [2021-11-04 06:46:58,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:46:58,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:46:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:46:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 06:46:58,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:46:58,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311406284] [2021-11-04 06:46:58,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311406284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:46:58,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:46:58,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:46:58,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716866203] [2021-11-04 06:46:58,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:46:58,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:46:58,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:46:58,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:46:58,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:46:58,924 INFO L87 Difference]: Start difference. First operand 2620 states and 3868 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 06:47:00,945 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:47:09,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:47:09,383 INFO L93 Difference]: Finished difference Result 5841 states and 8536 transitions. [2021-11-04 06:47:09,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:47:09,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2021-11-04 06:47:09,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:47:09,397 INFO L225 Difference]: With dead ends: 5841 [2021-11-04 06:47:09,397 INFO L226 Difference]: Without dead ends: 3292 [2021-11-04 06:47:09,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:47:09,402 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 876 mSDsluCounter, 3833 mSDsCounter, 0 mSdLazyCounter, 7714 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9169.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.47ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7714 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10329.58ms IncrementalHoareTripleChecker+Time [2021-11-04 06:47:09,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 0 Invalid, 7716 Unknown, 0 Unchecked, 14.47ms Time], IncrementalHoareTripleChecker [1 Valid, 7714 Invalid, 1 Unknown, 0 Unchecked, 10329.58ms Time] [2021-11-04 06:47:09,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2021-11-04 06:47:09,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 3204. [2021-11-04 06:47:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3204 states, 3162 states have (on average 1.4794433902593296) internal successors, (4678), 3203 states have internal predecessors, (4678), 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 06:47:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 4678 transitions. [2021-11-04 06:47:09,459 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 4678 transitions. Word has length 80 [2021-11-04 06:47:09,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:47:09,459 INFO L470 AbstractCegarLoop]: Abstraction has 3204 states and 4678 transitions. [2021-11-04 06:47:09,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 06:47:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 4678 transitions. [2021-11-04 06:47:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-04 06:47:09,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:47:09,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:47:09,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 06:47:09,461 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:47:09,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:47:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash -373973430, now seen corresponding path program 1 times [2021-11-04 06:47:09,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:47:09,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443958066] [2021-11-04 06:47:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:47:09,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:47:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:47:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 06:47:09,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:47:09,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443958066] [2021-11-04 06:47:09,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443958066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:47:09,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:47:09,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:47:09,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662106583] [2021-11-04 06:47:09,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:47:09,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:47:09,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:47:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:47:09,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:47:09,595 INFO L87 Difference]: Start difference. First operand 3204 states and 4678 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:47:11,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:47:23,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:47:23,680 INFO L93 Difference]: Finished difference Result 9143 states and 13487 transitions. [2021-11-04 06:47:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:47:23,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-04 06:47:23,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:47:23,720 INFO L225 Difference]: With dead ends: 9143 [2021-11-04 06:47:23,727 INFO L226 Difference]: Without dead ends: 6010 [2021-11-04 06:47:23,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:47:23,750 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3727 mSDsluCounter, 3680 mSDsCounter, 0 mSdLazyCounter, 10451 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12291.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3727 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.58ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10451 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13908.78ms IncrementalHoareTripleChecker+Time [2021-11-04 06:47:23,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3727 Valid, 0 Invalid, 10455 Unknown, 0 Unchecked, 12.58ms Time], IncrementalHoareTripleChecker [3 Valid, 10451 Invalid, 1 Unknown, 0 Unchecked, 13908.78ms Time] [2021-11-04 06:47:23,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6010 states. [2021-11-04 06:47:23,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6010 to 5946. [2021-11-04 06:47:23,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5946 states, 5904 states have (on average 1.4991531165311653) internal successors, (8851), 5945 states have internal predecessors, (8851), 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 06:47:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5946 states to 5946 states and 8851 transitions. [2021-11-04 06:47:23,885 INFO L78 Accepts]: Start accepts. Automaton has 5946 states and 8851 transitions. Word has length 83 [2021-11-04 06:47:23,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:47:23,886 INFO L470 AbstractCegarLoop]: Abstraction has 5946 states and 8851 transitions. [2021-11-04 06:47:23,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:47:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5946 states and 8851 transitions. [2021-11-04 06:47:23,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-04 06:47:23,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:47:23,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:47:23,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 06:47:23,892 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:47:23,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:47:23,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2037562997, now seen corresponding path program 1 times [2021-11-04 06:47:23,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:47:23,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000486365] [2021-11-04 06:47:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:47:23,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:47:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:47:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 06:47:24,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:47:24,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000486365] [2021-11-04 06:47:24,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000486365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:47:24,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:47:24,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:47:24,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484682820] [2021-11-04 06:47:24,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:47:24,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:47:24,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:47:24,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:47:24,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:47:24,018 INFO L87 Difference]: Start difference. First operand 5946 states and 8851 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 06:47:26,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:47:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:47:35,503 INFO L93 Difference]: Finished difference Result 15730 states and 23665 transitions. [2021-11-04 06:47:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:47:35,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-04 06:47:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:47:35,536 INFO L225 Difference]: With dead ends: 15730 [2021-11-04 06:47:35,536 INFO L226 Difference]: Without dead ends: 9855 [2021-11-04 06:47:35,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:47:35,545 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3062 mSDsluCounter, 3763 mSDsCounter, 0 mSdLazyCounter, 7662 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9900.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3062 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.05ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 7662 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11270.44ms IncrementalHoareTripleChecker+Time [2021-11-04 06:47:35,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3062 Valid, 0 Invalid, 7677 Unknown, 0 Unchecked, 11.05ms Time], IncrementalHoareTripleChecker [14 Valid, 7662 Invalid, 1 Unknown, 0 Unchecked, 11270.44ms Time] [2021-11-04 06:47:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9855 states. [2021-11-04 06:47:35,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9855 to 9627. [2021-11-04 06:47:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9627 states, 9585 states have (on average 1.527490871152843) internal successors, (14641), 9626 states have internal predecessors, (14641), 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 06:47:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9627 states to 9627 states and 14641 transitions. [2021-11-04 06:47:35,764 INFO L78 Accepts]: Start accepts. Automaton has 9627 states and 14641 transitions. Word has length 87 [2021-11-04 06:47:35,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:47:35,765 INFO L470 AbstractCegarLoop]: Abstraction has 9627 states and 14641 transitions. [2021-11-04 06:47:35,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 06:47:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand 9627 states and 14641 transitions. [2021-11-04 06:47:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 06:47:35,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:47:35,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:47:35,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 06:47:35,767 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:47:35,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:47:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1880037815, now seen corresponding path program 1 times [2021-11-04 06:47:35,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:47:35,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888992104] [2021-11-04 06:47:35,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:47:35,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:47:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:47:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 06:47:35,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:47:35,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888992104] [2021-11-04 06:47:35,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888992104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:47:35,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:47:35,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:47:35,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022426867] [2021-11-04 06:47:35,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:47:35,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:47:35,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:47:35,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:47:35,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:47:35,938 INFO L87 Difference]: Start difference. First operand 9627 states and 14641 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:47:37,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:47:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:47:48,178 INFO L93 Difference]: Finished difference Result 28042 states and 42955 transitions. [2021-11-04 06:47:48,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:47:48,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 06:47:48,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:47:48,219 INFO L225 Difference]: With dead ends: 28042 [2021-11-04 06:47:48,220 INFO L226 Difference]: Without dead ends: 18485 [2021-11-04 06:47:48,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:47:48,238 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3586 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 7568 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10522.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3586 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.69ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 7568 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11967.55ms IncrementalHoareTripleChecker+Time [2021-11-04 06:47:48,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3586 Valid, 0 Invalid, 7630 Unknown, 0 Unchecked, 10.69ms Time], IncrementalHoareTripleChecker [61 Valid, 7568 Invalid, 1 Unknown, 0 Unchecked, 11967.55ms Time] [2021-11-04 06:47:48,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18485 states. [2021-11-04 06:47:48,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18485 to 18215. [2021-11-04 06:47:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18215 states, 18175 states have (on average 1.5388170563961485) internal successors, (27968), 18214 states have internal predecessors, (27968), 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 06:47:48,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18215 states to 18215 states and 27968 transitions. [2021-11-04 06:47:48,553 INFO L78 Accepts]: Start accepts. Automaton has 18215 states and 27968 transitions. Word has length 96 [2021-11-04 06:47:48,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:47:48,554 INFO L470 AbstractCegarLoop]: Abstraction has 18215 states and 27968 transitions. [2021-11-04 06:47:48,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:47:48,554 INFO L276 IsEmpty]: Start isEmpty. Operand 18215 states and 27968 transitions. [2021-11-04 06:47:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-04 06:47:48,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:47:48,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:48,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 06:47:48,556 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:47:48,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:47:48,558 INFO L85 PathProgramCache]: Analyzing trace with hash -153956232, now seen corresponding path program 1 times [2021-11-04 06:47:48,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:47:48,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581832703] [2021-11-04 06:47:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:47:48,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:47:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:47:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 06:47:48,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:47:48,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581832703] [2021-11-04 06:47:48,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581832703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:47:48,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:47:48,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:47:48,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345294184] [2021-11-04 06:47:48,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:47:48,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:47:48,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:47:48,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:47:48,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:47:48,699 INFO L87 Difference]: Start difference. First operand 18215 states and 27968 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 06:47:50,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:47:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:47:55,975 INFO L93 Difference]: Finished difference Result 18215 states and 27968 transitions. [2021-11-04 06:47:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:47:55,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2021-11-04 06:47:55,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:47:56,011 INFO L225 Difference]: With dead ends: 18215 [2021-11-04 06:47:56,012 INFO L226 Difference]: Without dead ends: 18213 [2021-11-04 06:47:56,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:47:56,020 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3757 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3852 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6269.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3852 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7033.27ms IncrementalHoareTripleChecker+Time [2021-11-04 06:47:56,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3757 Valid, 0 Invalid, 3853 Unknown, 0 Unchecked, 5.17ms Time], IncrementalHoareTripleChecker [0 Valid, 3852 Invalid, 1 Unknown, 0 Unchecked, 7033.27ms Time] [2021-11-04 06:47:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18213 states. [2021-11-04 06:47:56,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18213 to 18213. [2021-11-04 06:47:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18213 states, 18174 states have (on average 1.538736656762408) internal successors, (27965), 18212 states have internal predecessors, (27965), 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 06:47:56,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18213 states to 18213 states and 27965 transitions. [2021-11-04 06:47:56,348 INFO L78 Accepts]: Start accepts. Automaton has 18213 states and 27965 transitions. Word has length 98 [2021-11-04 06:47:56,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:47:56,349 INFO L470 AbstractCegarLoop]: Abstraction has 18213 states and 27965 transitions. [2021-11-04 06:47:56,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 06:47:56,349 INFO L276 IsEmpty]: Start isEmpty. Operand 18213 states and 27965 transitions. [2021-11-04 06:47:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-04 06:47:56,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:47:56,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:47:56,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 06:47:56,351 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:47:56,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:47:56,351 INFO L85 PathProgramCache]: Analyzing trace with hash -477659949, now seen corresponding path program 1 times [2021-11-04 06:47:56,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:47:56,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576082584] [2021-11-04 06:47:56,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:47:56,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:47:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:47:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 06:47:56,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:47:56,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576082584] [2021-11-04 06:47:56,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576082584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:47:56,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:47:56,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:47:56,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951818095] [2021-11-04 06:47:56,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:47:56,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:47:56,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:47:56,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:47:56,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:47:56,504 INFO L87 Difference]: Start difference. First operand 18213 states and 27965 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 06:47:58,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:48:03,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:48:03,718 INFO L93 Difference]: Finished difference Result 18213 states and 27965 transitions. [2021-11-04 06:48:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:48:03,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 99 [2021-11-04 06:48:03,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:48:03,745 INFO L225 Difference]: With dead ends: 18213 [2021-11-04 06:48:03,745 INFO L226 Difference]: Without dead ends: 18211 [2021-11-04 06:48:03,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:48:03,752 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3754 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3850 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6277.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3754 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.20ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3850 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7036.36ms IncrementalHoareTripleChecker+Time [2021-11-04 06:48:03,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3754 Valid, 0 Invalid, 3851 Unknown, 0 Unchecked, 5.20ms Time], IncrementalHoareTripleChecker [0 Valid, 3850 Invalid, 1 Unknown, 0 Unchecked, 7036.36ms Time] [2021-11-04 06:48:03,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18211 states. [2021-11-04 06:48:04,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18211 to 18211. [2021-11-04 06:48:04,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18211 states, 18173 states have (on average 1.538656248280416) internal successors, (27962), 18210 states have internal predecessors, (27962), 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 06:48:04,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18211 states to 18211 states and 27962 transitions. [2021-11-04 06:48:04,074 INFO L78 Accepts]: Start accepts. Automaton has 18211 states and 27962 transitions. Word has length 99 [2021-11-04 06:48:04,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:48:04,074 INFO L470 AbstractCegarLoop]: Abstraction has 18211 states and 27962 transitions. [2021-11-04 06:48:04,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 06:48:04,075 INFO L276 IsEmpty]: Start isEmpty. Operand 18211 states and 27962 transitions. [2021-11-04 06:48:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-04 06:48:04,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:48:04,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:48:04,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 06:48:04,076 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:48:04,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:48:04,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1416322108, now seen corresponding path program 1 times [2021-11-04 06:48:04,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:48:04,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978362282] [2021-11-04 06:48:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:48:04,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:48:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:48:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 06:48:04,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:48:04,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978362282] [2021-11-04 06:48:04,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978362282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:48:04,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:48:04,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:48:04,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205847765] [2021-11-04 06:48:04,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:48:04,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:48:04,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:48:04,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:48:04,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:48:04,190 INFO L87 Difference]: Start difference. First operand 18211 states and 27962 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 06:48:06,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:48:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:48:19,852 INFO L93 Difference]: Finished difference Result 36283 states and 55778 transitions. [2021-11-04 06:48:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:48:19,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 100 [2021-11-04 06:48:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:48:19,878 INFO L225 Difference]: With dead ends: 36283 [2021-11-04 06:48:19,878 INFO L226 Difference]: Without dead ends: 18143 [2021-11-04 06:48:19,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:48:19,898 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3501 mSDsluCounter, 3634 mSDsCounter, 0 mSdLazyCounter, 10768 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13573.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.76ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 10768 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15316.16ms IncrementalHoareTripleChecker+Time [2021-11-04 06:48:19,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3501 Valid, 0 Invalid, 10816 Unknown, 0 Unchecked, 12.76ms Time], IncrementalHoareTripleChecker [47 Valid, 10768 Invalid, 1 Unknown, 0 Unchecked, 15316.16ms Time] [2021-11-04 06:48:19,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2021-11-04 06:48:20,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 18069. [2021-11-04 06:48:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18069 states, 18045 states have (on average 1.5364366860626213) internal successors, (27725), 18068 states have internal predecessors, (27725), 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 06:48:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18069 states to 18069 states and 27725 transitions. [2021-11-04 06:48:20,294 INFO L78 Accepts]: Start accepts. Automaton has 18069 states and 27725 transitions. Word has length 100 [2021-11-04 06:48:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:48:20,294 INFO L470 AbstractCegarLoop]: Abstraction has 18069 states and 27725 transitions. [2021-11-04 06:48:20,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 06:48:20,295 INFO L276 IsEmpty]: Start isEmpty. Operand 18069 states and 27725 transitions. [2021-11-04 06:48:20,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-04 06:48:20,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:48:20,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:48:20,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 06:48:20,296 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:48:20,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:48:20,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1922540574, now seen corresponding path program 1 times [2021-11-04 06:48:20,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:48:20,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833585159] [2021-11-04 06:48:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:48:20,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:48:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:48:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 06:48:20,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:48:20,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833585159] [2021-11-04 06:48:20,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833585159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:48:20,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:48:20,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:48:20,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171493532] [2021-11-04 06:48:20,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:48:20,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:48:20,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:48:20,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:48:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:48:20,420 INFO L87 Difference]: Start difference. First operand 18069 states and 27725 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 06:48:22,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:48:28,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:48:28,365 INFO L93 Difference]: Finished difference Result 18069 states and 27725 transitions. [2021-11-04 06:48:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:48:28,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 100 [2021-11-04 06:48:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:48:28,396 INFO L225 Difference]: With dead ends: 18069 [2021-11-04 06:48:28,396 INFO L226 Difference]: Without dead ends: 18036 [2021-11-04 06:48:28,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:48:28,405 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3687 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3784 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6938.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3687 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3784 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7730.34ms IncrementalHoareTripleChecker+Time [2021-11-04 06:48:28,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3687 Valid, 0 Invalid, 3785 Unknown, 0 Unchecked, 5.10ms Time], IncrementalHoareTripleChecker [0 Valid, 3784 Invalid, 1 Unknown, 0 Unchecked, 7730.34ms Time] [2021-11-04 06:48:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18036 states. [2021-11-04 06:48:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18036 to 18036. [2021-11-04 06:48:28,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18036 states, 18013 states have (on average 1.5365569311053129) internal successors, (27678), 18035 states have internal predecessors, (27678), 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 06:48:28,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18036 states to 18036 states and 27678 transitions. [2021-11-04 06:48:28,724 INFO L78 Accepts]: Start accepts. Automaton has 18036 states and 27678 transitions. Word has length 100 [2021-11-04 06:48:28,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:48:28,724 INFO L470 AbstractCegarLoop]: Abstraction has 18036 states and 27678 transitions. [2021-11-04 06:48:28,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 06:48:28,724 INFO L276 IsEmpty]: Start isEmpty. Operand 18036 states and 27678 transitions. [2021-11-04 06:48:28,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-04 06:48:28,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:48:28,725 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:28,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 06:48:28,726 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:48:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:48:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1630109415, now seen corresponding path program 1 times [2021-11-04 06:48:28,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:48:28,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656093430] [2021-11-04 06:48:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:48:28,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:48:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:48:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 06:48:28,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:48:28,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656093430] [2021-11-04 06:48:28,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656093430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:48:28,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:48:28,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:48:28,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446408523] [2021-11-04 06:48:28,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:48:28,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:48:28,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:48:28,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:48:28,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:48:28,839 INFO L87 Difference]: Start difference. First operand 18036 states and 27678 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 06:48:30,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:48:39,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:48:39,541 INFO L93 Difference]: Finished difference Result 38115 states and 58240 transitions. [2021-11-04 06:48:39,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:48:39,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2021-11-04 06:48:39,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:48:39,567 INFO L225 Difference]: With dead ends: 38115 [2021-11-04 06:48:39,567 INFO L226 Difference]: Without dead ends: 20150 [2021-11-04 06:48:39,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:48:39,587 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1679 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 7446 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9205.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.65ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 7446 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10375.03ms IncrementalHoareTripleChecker+Time [2021-11-04 06:48:39,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 0 Invalid, 7458 Unknown, 0 Unchecked, 8.65ms Time], IncrementalHoareTripleChecker [11 Valid, 7446 Invalid, 1 Unknown, 0 Unchecked, 10375.03ms Time] [2021-11-04 06:48:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20150 states. [2021-11-04 06:48:39,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20150 to 20072. [2021-11-04 06:48:39,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20072 states, 20049 states have (on average 1.5215721482368199) internal successors, (30506), 20071 states have internal predecessors, (30506), 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 06:48:39,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20072 states to 20072 states and 30506 transitions. [2021-11-04 06:48:39,858 INFO L78 Accepts]: Start accepts. Automaton has 20072 states and 30506 transitions. Word has length 114 [2021-11-04 06:48:39,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:48:39,858 INFO L470 AbstractCegarLoop]: Abstraction has 20072 states and 30506 transitions. [2021-11-04 06:48:39,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 06:48:39,859 INFO L276 IsEmpty]: Start isEmpty. Operand 20072 states and 30506 transitions. [2021-11-04 06:48:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-04 06:48:39,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:48:39,861 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:48:39,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-04 06:48:39,862 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:48:39,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:48:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1509890746, now seen corresponding path program 1 times [2021-11-04 06:48:39,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:48:39,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444994686] [2021-11-04 06:48:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:48:39,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:48:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:48:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-04 06:48:39,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:48:39,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444994686] [2021-11-04 06:48:39,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444994686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:48:39,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:48:39,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:48:39,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683495620] [2021-11-04 06:48:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:48:39,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:48:39,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:48:39,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:48:39,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:48:39,970 INFO L87 Difference]: Start difference. First operand 20072 states and 30506 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 06:48:41,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:48:50,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:48:50,709 INFO L93 Difference]: Finished difference Result 42187 states and 63896 transitions. [2021-11-04 06:48:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:48:50,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 124 [2021-11-04 06:48:50,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:48:50,750 INFO L225 Difference]: With dead ends: 42187 [2021-11-04 06:48:50,750 INFO L226 Difference]: Without dead ends: 22186 [2021-11-04 06:48:50,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:48:50,779 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1892 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 7255 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9220.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.47ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 7255 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10380.06ms IncrementalHoareTripleChecker+Time [2021-11-04 06:48:50,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1892 Valid, 0 Invalid, 7268 Unknown, 0 Unchecked, 8.47ms Time], IncrementalHoareTripleChecker [12 Valid, 7255 Invalid, 1 Unknown, 0 Unchecked, 10380.06ms Time] [2021-11-04 06:48:50,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22186 states. [2021-11-04 06:48:51,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22186 to 22108. [2021-11-04 06:48:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22108 states, 22085 states have (on average 1.509350237717908) internal successors, (33334), 22107 states have internal predecessors, (33334), 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 06:48:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22108 states to 22108 states and 33334 transitions. [2021-11-04 06:48:51,182 INFO L78 Accepts]: Start accepts. Automaton has 22108 states and 33334 transitions. Word has length 124 [2021-11-04 06:48:51,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:48:51,183 INFO L470 AbstractCegarLoop]: Abstraction has 22108 states and 33334 transitions. [2021-11-04 06:48:51,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 06:48:51,183 INFO L276 IsEmpty]: Start isEmpty. Operand 22108 states and 33334 transitions. [2021-11-04 06:48:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-04 06:48:51,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:48:51,185 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:48:51,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-04 06:48:51,186 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:48:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:48:51,186 INFO L85 PathProgramCache]: Analyzing trace with hash 563118547, now seen corresponding path program 1 times [2021-11-04 06:48:51,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:48:51,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160948489] [2021-11-04 06:48:51,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:48:51,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:48:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:48:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 06:48:51,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:48:51,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160948489] [2021-11-04 06:48:51,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160948489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:48:51,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:48:51,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 06:48:51,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926490871] [2021-11-04 06:48:51,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:48:51,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 06:48:51,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:48:51,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 06:48:51,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 06:48:51,349 INFO L87 Difference]: Start difference. First operand 22108 states and 33334 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 06:48:53,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:49:08,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:49:08,362 INFO L93 Difference]: Finished difference Result 54677 states and 82625 transitions. [2021-11-04 06:49:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 06:49:08,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 130 [2021-11-04 06:49:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:49:08,425 INFO L225 Difference]: With dead ends: 54677 [2021-11-04 06:49:08,426 INFO L226 Difference]: Without dead ends: 32640 [2021-11-04 06:49:08,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 06:49:08,462 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7798 mSDsluCounter, 4181 mSDsCounter, 0 mSdLazyCounter, 11055 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14375.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7798 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.12ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11055 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16328.49ms IncrementalHoareTripleChecker+Time [2021-11-04 06:49:08,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7798 Valid, 0 Invalid, 11059 Unknown, 0 Unchecked, 26.12ms Time], IncrementalHoareTripleChecker [3 Valid, 11055 Invalid, 1 Unknown, 0 Unchecked, 16328.49ms Time] [2021-11-04 06:49:08,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32640 states. [2021-11-04 06:49:08,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32640 to 22028. [2021-11-04 06:49:08,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22028 states, 22005 states have (on average 1.510702113156101) internal successors, (33243), 22027 states have internal predecessors, (33243), 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 06:49:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22028 states to 22028 states and 33243 transitions. [2021-11-04 06:49:09,007 INFO L78 Accepts]: Start accepts. Automaton has 22028 states and 33243 transitions. Word has length 130 [2021-11-04 06:49:09,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:49:09,007 INFO L470 AbstractCegarLoop]: Abstraction has 22028 states and 33243 transitions. [2021-11-04 06:49:09,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 06:49:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand 22028 states and 33243 transitions. [2021-11-04 06:49:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-04 06:49:09,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:49:09,011 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:49:09,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-04 06:49:09,011 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:49:09,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:49:09,012 INFO L85 PathProgramCache]: Analyzing trace with hash 710935276, now seen corresponding path program 1 times [2021-11-04 06:49:09,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:49:09,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89678829] [2021-11-04 06:49:09,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:49:09,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:49:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:49:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 06:49:09,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:49:09,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89678829] [2021-11-04 06:49:09,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89678829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:49:09,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:49:09,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:49:09,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357675481] [2021-11-04 06:49:09,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:49:09,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:49:09,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:49:09,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:49:09,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:49:09,128 INFO L87 Difference]: Start difference. First operand 22028 states and 33243 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 06:49:11,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:49:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:49:25,408 INFO L93 Difference]: Finished difference Result 52296 states and 79342 transitions. [2021-11-04 06:49:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:49:25,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2021-11-04 06:49:25,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:49:25,450 INFO L225 Difference]: With dead ends: 52296 [2021-11-04 06:49:25,450 INFO L226 Difference]: Without dead ends: 30339 [2021-11-04 06:49:25,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:49:25,478 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3280 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 10167 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13802.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3280 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.00ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 10167 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15595.05ms IncrementalHoareTripleChecker+Time [2021-11-04 06:49:25,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3280 Valid, 0 Invalid, 10188 Unknown, 0 Unchecked, 12.00ms Time], IncrementalHoareTripleChecker [20 Valid, 10167 Invalid, 1 Unknown, 0 Unchecked, 15595.05ms Time] [2021-11-04 06:49:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30339 states. [2021-11-04 06:49:25,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30339 to 30076. [2021-11-04 06:49:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30076 states, 30053 states have (on average 1.5214787209263634) internal successors, (45725), 30075 states have internal predecessors, (45725), 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 06:49:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30076 states to 30076 states and 45725 transitions. [2021-11-04 06:49:26,049 INFO L78 Accepts]: Start accepts. Automaton has 30076 states and 45725 transitions. Word has length 134 [2021-11-04 06:49:26,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:49:26,049 INFO L470 AbstractCegarLoop]: Abstraction has 30076 states and 45725 transitions. [2021-11-04 06:49:26,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 06:49:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 30076 states and 45725 transitions. [2021-11-04 06:49:26,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-04 06:49:26,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:49:26,053 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:49:26,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-04 06:49:26,054 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:49:26,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:49:26,054 INFO L85 PathProgramCache]: Analyzing trace with hash 985421901, now seen corresponding path program 1 times [2021-11-04 06:49:26,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:49:26,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089727815] [2021-11-04 06:49:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:49:26,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:49:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:49:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-04 06:49:26,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:49:26,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089727815] [2021-11-04 06:49:26,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089727815] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 06:49:26,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106627214] [2021-11-04 06:49:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:49:26,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 06:49:26,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:49:26,199 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 06:49:26,230 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 06:49:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:49:26,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 2245 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 06:49:26,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 06:49:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-04 06:49:27,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 06:49:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-04 06:49:27,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106627214] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 06:49:27,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 06:49:27,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-04 06:49:27,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560677299] [2021-11-04 06:49:27,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 06:49:27,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 06:49:27,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:49:27,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 06:49:27,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 06:49:27,414 INFO L87 Difference]: Start difference. First operand 30076 states and 45725 transitions. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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 06:49:29,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:49:48,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:49:48,772 INFO L93 Difference]: Finished difference Result 60718 states and 92618 transitions. [2021-11-04 06:49:48,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-04 06:49:48,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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 140 [2021-11-04 06:49:48,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:49:48,818 INFO L225 Difference]: With dead ends: 60718 [2021-11-04 06:49:48,819 INFO L226 Difference]: Without dead ends: 30679 [2021-11-04 06:49:48,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.51ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 06:49:48,844 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 11088 mSDsCounter, 0 mSdLazyCounter, 15060 mSolverCounterSat, 181 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17789.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.46ms SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 15060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20665.24ms IncrementalHoareTripleChecker+Time [2021-11-04 06:49:48,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 15242 Unknown, 0 Unchecked, 20.46ms Time], IncrementalHoareTripleChecker [181 Valid, 15060 Invalid, 1 Unknown, 0 Unchecked, 20665.24ms Time] [2021-11-04 06:49:48,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30679 states. [2021-11-04 06:49:49,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30679 to 30679. [2021-11-04 06:49:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30679 states, 30656 states have (on average 1.5112212943632568) internal successors, (46328), 30678 states have internal predecessors, (46328), 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 06:49:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30679 states to 30679 states and 46328 transitions. [2021-11-04 06:49:49,424 INFO L78 Accepts]: Start accepts. Automaton has 30679 states and 46328 transitions. Word has length 140 [2021-11-04 06:49:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:49:49,425 INFO L470 AbstractCegarLoop]: Abstraction has 30679 states and 46328 transitions. [2021-11-04 06:49:49,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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 06:49:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 30679 states and 46328 transitions. [2021-11-04 06:49:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-04 06:49:49,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:49:49,429 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:49:49,461 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 06:49:49,655 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,SelfDestructingSolverStorable15 [2021-11-04 06:49:49,655 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:49:49,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:49:49,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1767727815, now seen corresponding path program 2 times [2021-11-04 06:49:49,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:49:49,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691467223] [2021-11-04 06:49:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:49:49,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:49:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:49:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-04 06:49:49,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:49:49,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691467223] [2021-11-04 06:49:49,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691467223] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 06:49:49,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137835408] [2021-11-04 06:49:49,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 06:49:49,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 06:49:49,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:49:49,888 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 06:49:49,892 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 06:49:50,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-04 06:49:50,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 06:49:50,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-04 06:49:50,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 06:49:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-04 06:49:51,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 06:49:51,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137835408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:49:51,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 06:49:51,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2021-11-04 06:49:51,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993555874] [2021-11-04 06:49:51,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:49:51,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-04 06:49:51,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:49:51,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-04 06:49:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-11-04 06:49:51,454 INFO L87 Difference]: Start difference. First operand 30679 states and 46328 transitions. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 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 06:49:53,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:50:06,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 06:50:27,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 06:52:38,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:52:38,279 INFO L93 Difference]: Finished difference Result 362409 states and 553374 transitions. [2021-11-04 06:52:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-04 06:52:38,280 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 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 167 [2021-11-04 06:52:38,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:52:39,174 INFO L225 Difference]: With dead ends: 362409 [2021-11-04 06:52:39,175 INFO L226 Difference]: Without dead ends: 331828 [2021-11-04 06:52:39,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 1762.87ms TimeCoverageRelationStatistics Valid=1394, Invalid=5412, Unknown=0, NotChecked=0, Total=6806 [2021-11-04 06:52:39,307 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138503 mSDsluCounter, 107446 mSDsCounter, 0 mSdLazyCounter, 114702 mSolverCounterSat, 56 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137035.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138503 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 356.59ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 114702 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154529.13ms IncrementalHoareTripleChecker+Time [2021-11-04 06:52:39,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138503 Valid, 0 Invalid, 114761 Unknown, 0 Unchecked, 356.59ms Time], IncrementalHoareTripleChecker [56 Valid, 114702 Invalid, 3 Unknown, 0 Unchecked, 154529.13ms Time] [2021-11-04 06:52:39,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331828 states. [2021-11-04 06:52:42,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331828 to 30883. [2021-11-04 06:52:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30883 states, 30860 states have (on average 1.507841866493843) internal successors, (46532), 30882 states have internal predecessors, (46532), 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 06:52:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30883 states to 30883 states and 46532 transitions. [2021-11-04 06:52:43,042 INFO L78 Accepts]: Start accepts. Automaton has 30883 states and 46532 transitions. Word has length 167 [2021-11-04 06:52:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:52:43,043 INFO L470 AbstractCegarLoop]: Abstraction has 30883 states and 46532 transitions. [2021-11-04 06:52:43,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 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 06:52:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 30883 states and 46532 transitions. [2021-11-04 06:52:43,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-04 06:52:43,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:52:43,047 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:52:43,073 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 06:52:43,254 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,SelfDestructingSolverStorable16 [2021-11-04 06:52:43,255 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:52:43,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:52:43,255 INFO L85 PathProgramCache]: Analyzing trace with hash -37710519, now seen corresponding path program 1 times [2021-11-04 06:52:43,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:52:43,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223245663] [2021-11-04 06:52:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:52:43,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:52:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:52:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-04 06:52:43,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:52:43,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223245663] [2021-11-04 06:52:43,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223245663] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 06:52:43,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702115312] [2021-11-04 06:52:43,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:52:43,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 06:52:43,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:52:43,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 06:52:43,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 06:52:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:52:44,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-04 06:52:44,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 06:52:44,425 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-04 06:52:44,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 06:52:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-04 06:52:44,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702115312] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 06:52:44,858 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 06:52:44,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-11-04 06:52:44,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96804670] [2021-11-04 06:52:44,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 06:52:44,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-04 06:52:44,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:52:44,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-04 06:52:44,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=148, Unknown=0, NotChecked=0, Total=272 [2021-11-04 06:52:44,860 INFO L87 Difference]: Start difference. First operand 30883 states and 46532 transitions. Second operand has 17 states, 17 states have (on average 8.882352941176471) internal successors, (151), 17 states have internal predecessors, (151), 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 06:52:46,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:53:26,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:53:26,612 INFO L93 Difference]: Finished difference Result 62293 states and 94175 transitions. [2021-11-04 06:53:26,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-04 06:53:26,616 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.882352941176471) internal successors, (151), 17 states have internal predecessors, (151), 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 167 [2021-11-04 06:53:26,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:53:26,660 INFO L225 Difference]: With dead ends: 62293 [2021-11-04 06:53:26,660 INFO L226 Difference]: Without dead ends: 31471 [2021-11-04 06:53:26,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 235.40ms TimeCoverageRelationStatistics Valid=124, Invalid=148, Unknown=0, NotChecked=0, Total=272 [2021-11-04 06:53:26,685 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 22176 mSDsCounter, 0 mSdLazyCounter, 26343 mSolverCounterSat, 314 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33474.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.56ms SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 26343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39675.97ms IncrementalHoareTripleChecker+Time [2021-11-04 06:53:26,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 26658 Unknown, 0 Unchecked, 42.56ms Time], IncrementalHoareTripleChecker [314 Valid, 26343 Invalid, 1 Unknown, 0 Unchecked, 39675.97ms Time] [2021-11-04 06:53:26,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31471 states. [2021-11-04 06:53:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31471 to 31471. [2021-11-04 06:53:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31471 states, 31448 states have (on average 1.49834647672348) internal successors, (47120), 31470 states have internal predecessors, (47120), 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 06:53:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31471 states to 31471 states and 47120 transitions. [2021-11-04 06:53:28,618 INFO L78 Accepts]: Start accepts. Automaton has 31471 states and 47120 transitions. Word has length 167 [2021-11-04 06:53:28,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:53:28,618 INFO L470 AbstractCegarLoop]: Abstraction has 31471 states and 47120 transitions. [2021-11-04 06:53:28,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.882352941176471) internal successors, (151), 17 states have internal predecessors, (151), 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 06:53:28,618 INFO L276 IsEmpty]: Start isEmpty. Operand 31471 states and 47120 transitions. [2021-11-04 06:53:28,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-04 06:53:28,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:53:28,621 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:53:28,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 06:53:28,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-04 06:53:28,822 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:53:28,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:53:28,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2058982089, now seen corresponding path program 2 times [2021-11-04 06:53:28,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:53:28,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707624048] [2021-11-04 06:53:28,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:53:28,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:53:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:53:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-04 06:53:29,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:53:29,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707624048] [2021-11-04 06:53:29,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707624048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:53:29,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:53:29,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 06:53:29,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282482349] [2021-11-04 06:53:29,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:53:29,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 06:53:29,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:53:29,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 06:53:29,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 06:53:29,037 INFO L87 Difference]: Start difference. First operand 31471 states and 47120 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 06:53:31,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:53:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:53:59,507 INFO L93 Difference]: Finished difference Result 91450 states and 137735 transitions. [2021-11-04 06:53:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 06:53:59,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 179 [2021-11-04 06:53:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:53:59,597 INFO L225 Difference]: With dead ends: 91450 [2021-11-04 06:53:59,598 INFO L226 Difference]: Without dead ends: 60089 [2021-11-04 06:53:59,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.26ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 06:53:59,627 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11001 mSDsluCounter, 10391 mSDsCounter, 0 mSdLazyCounter, 17565 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23315.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11001 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.76ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17565 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26931.78ms IncrementalHoareTripleChecker+Time [2021-11-04 06:53:59,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11001 Valid, 0 Invalid, 17572 Unknown, 0 Unchecked, 28.76ms Time], IncrementalHoareTripleChecker [6 Valid, 17565 Invalid, 1 Unknown, 0 Unchecked, 26931.78ms Time] [2021-11-04 06:53:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60089 states. [2021-11-04 06:54:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60089 to 31471. [2021-11-04 06:54:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31471 states, 31448 states have (on average 1.4972017298397355) internal successors, (47084), 31470 states have internal predecessors, (47084), 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 06:54:01,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31471 states to 31471 states and 47084 transitions. [2021-11-04 06:54:01,804 INFO L78 Accepts]: Start accepts. Automaton has 31471 states and 47084 transitions. Word has length 179 [2021-11-04 06:54:01,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:54:01,805 INFO L470 AbstractCegarLoop]: Abstraction has 31471 states and 47084 transitions. [2021-11-04 06:54:01,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 06:54:01,805 INFO L276 IsEmpty]: Start isEmpty. Operand 31471 states and 47084 transitions. [2021-11-04 06:54:01,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-04 06:54:01,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:54:01,809 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:54:01,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-04 06:54:01,809 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:54:01,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:54:01,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1247100886, now seen corresponding path program 1 times [2021-11-04 06:54:01,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:54:01,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517043160] [2021-11-04 06:54:01,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:54:01,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:54:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:54:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-04 06:54:02,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:54:02,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517043160] [2021-11-04 06:54:02,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517043160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:54:02,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:54:02,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:54:02,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834794698] [2021-11-04 06:54:02,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:54:02,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:54:02,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:54:02,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:54:02,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:54:02,036 INFO L87 Difference]: Start difference. First operand 31471 states and 47084 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 06:54:04,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:54:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:54:25,364 INFO L93 Difference]: Finished difference Result 85564 states and 128888 transitions. [2021-11-04 06:54:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:54:25,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 185 [2021-11-04 06:54:25,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:54:25,447 INFO L225 Difference]: With dead ends: 85564 [2021-11-04 06:54:25,447 INFO L226 Difference]: Without dead ends: 54203 [2021-11-04 06:54:25,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:54:25,474 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3470 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 8268 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16732.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3470 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19639.49ms IncrementalHoareTripleChecker+Time [2021-11-04 06:54:25,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3470 Valid, 0 Invalid, 8269 Unknown, 0 Unchecked, 13.12ms Time], IncrementalHoareTripleChecker [0 Valid, 8268 Invalid, 1 Unknown, 0 Unchecked, 19639.49ms Time] [2021-11-04 06:54:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54203 states. [2021-11-04 06:54:27,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54203 to 31423. [2021-11-04 06:54:27,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31423 states, 31400 states have (on average 1.4964331210191082) internal successors, (46988), 31422 states have internal predecessors, (46988), 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 06:54:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31423 states to 31423 states and 46988 transitions. [2021-11-04 06:54:27,761 INFO L78 Accepts]: Start accepts. Automaton has 31423 states and 46988 transitions. Word has length 185 [2021-11-04 06:54:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:54:27,761 INFO L470 AbstractCegarLoop]: Abstraction has 31423 states and 46988 transitions. [2021-11-04 06:54:27,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 06:54:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 31423 states and 46988 transitions. [2021-11-04 06:54:27,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-04 06:54:27,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:54:27,765 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:54:27,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-04 06:54:27,765 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:54:27,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:54:27,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1923038560, now seen corresponding path program 1 times [2021-11-04 06:54:27,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:54:27,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018147870] [2021-11-04 06:54:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:54:27,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:54:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:54:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-04 06:54:28,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:54:28,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018147870] [2021-11-04 06:54:28,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018147870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:54:28,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:54:28,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-04 06:54:28,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093483469] [2021-11-04 06:54:28,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:54:28,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-04 06:54:28,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:54:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-04 06:54:28,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-11-04 06:54:28,279 INFO L87 Difference]: Start difference. First operand 31423 states and 46988 transitions. Second operand has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 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 06:54:30,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:54:42,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 06:56:32,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:56:32,752 INFO L93 Difference]: Finished difference Result 163372 states and 245497 transitions. [2021-11-04 06:56:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-04 06:56:32,752 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 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 185 [2021-11-04 06:56:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:56:32,968 INFO L225 Difference]: With dead ends: 163372 [2021-11-04 06:56:32,969 INFO L226 Difference]: Without dead ends: 131911 [2021-11-04 06:56:33,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1382.32ms TimeCoverageRelationStatistics Valid=1001, Invalid=2905, Unknown=0, NotChecked=0, Total=3906 [2021-11-04 06:56:33,017 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 122676 mSDsluCounter, 73219 mSDsCounter, 0 mSdLazyCounter, 78380 mSolverCounterSat, 54 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98026.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122676 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 78436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 270.56ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 78380 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113020.10ms IncrementalHoareTripleChecker+Time [2021-11-04 06:56:33,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122676 Valid, 0 Invalid, 78436 Unknown, 0 Unchecked, 270.56ms Time], IncrementalHoareTripleChecker [54 Valid, 78380 Invalid, 2 Unknown, 0 Unchecked, 113020.10ms Time] [2021-11-04 06:56:33,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131911 states. [2021-11-04 06:56:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131911 to 15416. [2021-11-04 06:56:35,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15416 states, 15393 states have (on average 1.5031507828233612) internal successors, (23138), 15415 states have internal predecessors, (23138), 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 06:56:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15416 states to 15416 states and 23138 transitions. [2021-11-04 06:56:35,138 INFO L78 Accepts]: Start accepts. Automaton has 15416 states and 23138 transitions. Word has length 185 [2021-11-04 06:56:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:56:35,139 INFO L470 AbstractCegarLoop]: Abstraction has 15416 states and 23138 transitions. [2021-11-04 06:56:35,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 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 06:56:35,139 INFO L276 IsEmpty]: Start isEmpty. Operand 15416 states and 23138 transitions. [2021-11-04 06:56:35,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-04 06:56:35,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:56:35,142 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:35,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-04 06:56:35,142 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:56:35,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:56:35,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1285573462, now seen corresponding path program 1 times [2021-11-04 06:56:35,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:56:35,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66831607] [2021-11-04 06:56:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:56:35,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:56:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:56:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-04 06:56:35,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:56:35,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66831607] [2021-11-04 06:56:35,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66831607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:56:35,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:56:35,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 06:56:35,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898551868] [2021-11-04 06:56:35,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:56:35,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 06:56:35,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:56:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 06:56:35,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 06:56:35,333 INFO L87 Difference]: Start difference. First operand 15416 states and 23138 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 06:56:37,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:57:32,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:57:32,408 INFO L93 Difference]: Finished difference Result 60842 states and 91502 transitions. [2021-11-04 06:57:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 06:57:32,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 193 [2021-11-04 06:57:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:57:32,471 INFO L225 Difference]: With dead ends: 60842 [2021-11-04 06:57:32,471 INFO L226 Difference]: Without dead ends: 45551 [2021-11-04 06:57:32,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.44ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-04 06:57:32,493 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 20396 mSDsluCounter, 21821 mSDsCounter, 0 mSdLazyCounter, 30239 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45183.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20396 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.33ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30239 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52643.11ms IncrementalHoareTripleChecker+Time [2021-11-04 06:57:32,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20396 Valid, 0 Invalid, 30243 Unknown, 0 Unchecked, 63.33ms Time], IncrementalHoareTripleChecker [3 Valid, 30239 Invalid, 1 Unknown, 0 Unchecked, 52643.11ms Time] [2021-11-04 06:57:32,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45551 states. [2021-11-04 06:57:34,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45551 to 15288. [2021-11-04 06:57:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15288 states, 15267 states have (on average 1.503962795572149) internal successors, (22961), 15287 states have internal predecessors, (22961), 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 06:57:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15288 states to 15288 states and 22961 transitions. [2021-11-04 06:57:34,173 INFO L78 Accepts]: Start accepts. Automaton has 15288 states and 22961 transitions. Word has length 193 [2021-11-04 06:57:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:57:34,174 INFO L470 AbstractCegarLoop]: Abstraction has 15288 states and 22961 transitions. [2021-11-04 06:57:34,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 06:57:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 15288 states and 22961 transitions. [2021-11-04 06:57:34,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-04 06:57:34,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:57:34,177 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:34,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-04 06:57:34,178 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:57:34,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:57:34,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1414003692, now seen corresponding path program 1 times [2021-11-04 06:57:34,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:57:34,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121632786] [2021-11-04 06:57:34,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:57:34,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:57:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:57:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-04 06:57:34,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:57:34,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121632786] [2021-11-04 06:57:34,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121632786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:57:34,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:57:34,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 06:57:34,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197403145] [2021-11-04 06:57:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:57:34,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 06:57:34,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:57:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 06:57:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 06:57:34,328 INFO L87 Difference]: Start difference. First operand 15288 states and 22961 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 06:57:36,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:57:42,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 06:59:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:59:02,713 INFO L93 Difference]: Finished difference Result 68102 states and 102465 transitions. [2021-11-04 06:59:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-04 06:59:02,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 193 [2021-11-04 06:59:02,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:59:02,811 INFO L225 Difference]: With dead ends: 68102 [2021-11-04 06:59:02,811 INFO L226 Difference]: Without dead ends: 68086 [2021-11-04 06:59:02,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 23.92ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-04 06:59:02,828 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14477 mSDsluCounter, 32391 mSDsCounter, 0 mSdLazyCounter, 46695 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68973.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14477 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 90.47ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 46695 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81047.48ms IncrementalHoareTripleChecker+Time [2021-11-04 06:59:02,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14477 Valid, 0 Invalid, 46709 Unknown, 0 Unchecked, 90.47ms Time], IncrementalHoareTripleChecker [12 Valid, 46695 Invalid, 2 Unknown, 0 Unchecked, 81047.48ms Time] [2021-11-04 06:59:02,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68086 states. [2021-11-04 06:59:04,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68086 to 15272. [2021-11-04 06:59:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15272 states, 15253 states have (on average 1.503704189339802) internal successors, (22936), 15271 states have internal predecessors, (22936), 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 06:59:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15272 states to 15272 states and 22936 transitions. [2021-11-04 06:59:04,706 INFO L78 Accepts]: Start accepts. Automaton has 15272 states and 22936 transitions. Word has length 193 [2021-11-04 06:59:04,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:59:04,706 INFO L470 AbstractCegarLoop]: Abstraction has 15272 states and 22936 transitions. [2021-11-04 06:59:04,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 06:59:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 15272 states and 22936 transitions. [2021-11-04 06:59:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-04 06:59:04,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:59:04,709 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:04,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-04 06:59:04,710 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-04 06:59:04,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:59:04,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1370091449, now seen corresponding path program 1 times [2021-11-04 06:59:04,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:59:04,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749416291] [2021-11-04 06:59:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:59:04,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:59:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:59:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-04 06:59:04,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:59:04,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749416291] [2021-11-04 06:59:04,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749416291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:59:04,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:59:04,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-04 06:59:04,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419360010] [2021-11-04 06:59:04,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:59:04,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 06:59:04,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:59:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 06:59:04,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-04 06:59:04,957 INFO L87 Difference]: Start difference. First operand 15272 states and 22936 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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 06:59:06,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15