./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--usb--class--cdc-wdm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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--usb--class--cdc-wdm.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 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 21:38:58,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 21:38:58,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 21:38:58,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 21:38:58,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 21:38:58,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 21:38:58,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 21:38:58,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 21:38:58,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 21:38:58,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 21:38:58,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 21:38:58,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 21:38:58,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 21:38:58,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 21:38:58,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 21:38:58,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 21:38:58,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 21:38:58,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 21:38:58,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 21:38:58,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 21:38:58,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 21:38:58,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 21:38:58,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 21:38:58,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 21:38:58,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 21:38:58,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 21:38:58,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 21:38:58,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 21:38:58,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 21:38:58,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 21:38:58,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 21:38:58,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 21:38:58,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 21:38:58,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 21:38:58,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 21:38:58,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 21:38:58,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 21:38:58,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 21:38:58,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 21:38:58,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 21:38:58,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 21:38:58,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 21:38:58,261 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 21:38:58,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 21:38:58,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 21:38:58,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 21:38:58,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 21:38:58,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 21:38:58,263 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 21:38:58,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 21:38:58,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 21:38:58,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 21:38:58,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 21:38:58,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 21:38:58,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 21:38:58,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 21:38:58,265 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 21:38:58,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 21:38:58,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 21:38:58,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 21:38:58,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 21:38:58,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 21:38:58,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 21:38:58,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 21:38:58,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 21:38:58,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 21:38:58,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 21:38:58,267 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 21:38:58,267 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 21:38:58,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 21:38:58,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 21:38:58,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4de76b02991c4f8780142b48e1370b1ba073d7148b74e77b2c83d6f21359d59e [2021-11-02 21:38:58,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 21:38:58,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 21:38:58,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 21:38:58,497 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 21:38:58,498 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 21:38:58,499 INFO L432 ainManager$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--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2021-11-02 21:38:58,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f739ad46/be5c2dee6d0a4f278d43158f67c4209d/FLAG774eb4be9 [2021-11-02 21:38:59,079 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 21:38:59,080 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--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2021-11-02 21:38:59,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f739ad46/be5c2dee6d0a4f278d43158f67c4209d/FLAG774eb4be9 [2021-11-02 21:38:59,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f739ad46/be5c2dee6d0a4f278d43158f67c4209d [2021-11-02 21:38:59,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 21:38:59,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 21:38:59,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 21:38:59,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 21:38:59,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 21:38:59,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:38:59" (1/1) ... [2021-11-02 21:38:59,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c96ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:38:59, skipping insertion in model container [2021-11-02 21:38:59,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:38:59" (1/1) ... [2021-11-02 21:38:59,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 21:38:59,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 21:39:00,235 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--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2021-11-02 21:39:00,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 21:39:00,337 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 21:39:00,657 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--usb--class--cdc-wdm.ko-entry_point.cil.out.i[185536,185549] [2021-11-02 21:39:00,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 21:39:00,784 INFO L208 MainTranslator]: Completed translation [2021-11-02 21:39:00,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:39:00 WrapperNode [2021-11-02 21:39:00,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 21:39:00,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 21:39:00,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 21:39:00,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 21:39:00,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:39:00" (1/1) ... [2021-11-02 21:39:00,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:39:00" (1/1) ... [2021-11-02 21:39:01,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 21:39:01,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 21:39:01,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 21:39:01,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 21:39:01,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:39:00" (1/1) ... [2021-11-02 21:39:01,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:39:00" (1/1) ... [2021-11-02 21:39:01,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:39:00" (1/1) ... [2021-11-02 21:39:01,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:39:00" (1/1) ... [2021-11-02 21:39:01,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:39:00" (1/1) ... [2021-11-02 21:39:01,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:39:00" (1/1) ... [2021-11-02 21:39:01,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:39:00" (1/1) ... [2021-11-02 21:39:01,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 21:39:01,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 21:39:01,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 21:39:01,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 21:39:01,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:39:00" (1/1) ... [2021-11-02 21:39:01,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 21:39:01,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:39:01,468 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) [2021-11-02 21:39:01,487 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 [2021-11-02 21:39:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 21:39:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 21:39:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 21:39:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 21:39:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 21:39:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 21:39:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 21:39:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 21:39:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 21:39:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 21:39:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 21:39:01,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 21:39:07,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 21:39:07,333 INFO L299 CfgBuilder]: Removed 1477 assume(true) statements. [2021-11-02 21:39:07,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:39:07 BoogieIcfgContainer [2021-11-02 21:39:07,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 21:39:07,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 21:39:07,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 21:39:07,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 21:39:07,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:38:59" (1/3) ... [2021-11-02 21:39:07,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501f5aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:39:07, skipping insertion in model container [2021-11-02 21:39:07,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:39:00" (2/3) ... [2021-11-02 21:39:07,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501f5aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:39:07, skipping insertion in model container [2021-11-02 21:39:07,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:39:07" (3/3) ... [2021-11-02 21:39:07,343 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2021-11-02 21:39:07,347 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 21:39:07,348 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-02 21:39:07,397 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 21:39:07,403 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 [2021-11-02 21:39:07,403 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-02 21:39:07,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 1220 states, 1181 states have (on average 1.3742591024555462) internal successors, (1623), 1219 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:07,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 21:39:07,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:39:07,448 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] [2021-11-02 21:39:07,449 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:39:07,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:39:07,453 INFO L85 PathProgramCache]: Analyzing trace with hash -285552863, now seen corresponding path program 1 times [2021-11-02 21:39:07,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:39:07,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597724624] [2021-11-02 21:39:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:39:07,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:39:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:39:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 21:39:07,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:39:07,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597724624] [2021-11-02 21:39:07,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597724624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:39:07,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:39:07,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:39:07,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323613524] [2021-11-02 21:39:07,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 21:39:07,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:39:07,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 21:39:07,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 21:39:07,911 INFO L87 Difference]: Start difference. First operand has 1220 states, 1181 states have (on average 1.3742591024555462) internal successors, (1623), 1219 states have internal predecessors, (1623), 0 states have call successors, (0), 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 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:09,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:39:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:39:12,109 INFO L93 Difference]: Finished difference Result 2436 states and 3241 transitions. [2021-11-02 21:39:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 21:39:12,112 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-02 21:39:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:39:12,133 INFO L225 Difference]: With dead ends: 2436 [2021-11-02 21:39:12,133 INFO L226 Difference]: Without dead ends: 1211 [2021-11-02 21:39:12,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 21:39:12,145 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3764.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4069.75ms IncrementalHoareTripleChecker+Time [2021-11-02 21:39:12,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 1559 Unknown, 0 Unchecked, 5.26ms Time], IncrementalHoareTripleChecker [0 Valid, 1558 Invalid, 1 Unknown, 0 Unchecked, 4069.75ms Time] [2021-11-02 21:39:12,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-02 21:39:12,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1211. [2021-11-02 21:39:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1173 states have (on average 1.3213981244671782) internal successors, (1550), 1210 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1550 transitions. [2021-11-02 21:39:12,220 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1550 transitions. Word has length 69 [2021-11-02 21:39:12,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:39:12,220 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 1550 transitions. [2021-11-02 21:39:12,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:12,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1550 transitions. [2021-11-02 21:39:12,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 21:39:12,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:39:12,224 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] [2021-11-02 21:39:12,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 21:39:12,277 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:39:12,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:39:12,278 INFO L85 PathProgramCache]: Analyzing trace with hash 738566293, now seen corresponding path program 1 times [2021-11-02 21:39:12,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:39:12,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713764998] [2021-11-02 21:39:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:39:12,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:39:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:39:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 21:39:12,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:39:12,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713764998] [2021-11-02 21:39:12,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713764998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:39:12,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:39:12,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:39:12,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702860215] [2021-11-02 21:39:12,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:39:12,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:39:12,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:39:12,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:12,572 INFO L87 Difference]: Start difference. First operand 1211 states and 1550 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:14,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:39:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:39:18,197 INFO L93 Difference]: Finished difference Result 2395 states and 3077 transitions. [2021-11-02 21:39:18,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:39:18,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-02 21:39:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:39:18,202 INFO L225 Difference]: With dead ends: 2395 [2021-11-02 21:39:18,203 INFO L226 Difference]: Without dead ends: 1216 [2021-11-02 21:39:18,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:18,206 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 3093 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5016.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.19ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3093 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5503.64ms IncrementalHoareTripleChecker+Time [2021-11-02 21:39:18,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3102 Unknown, 0 Unchecked, 12.19ms Time], IncrementalHoareTripleChecker [8 Valid, 3093 Invalid, 1 Unknown, 0 Unchecked, 5503.64ms Time] [2021-11-02 21:39:18,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-11-02 21:39:18,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1216. [2021-11-02 21:39:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 1178 states have (on average 1.3200339558573855) internal successors, (1555), 1215 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1555 transitions. [2021-11-02 21:39:18,228 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1555 transitions. Word has length 69 [2021-11-02 21:39:18,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:39:18,229 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 1555 transitions. [2021-11-02 21:39:18,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1555 transitions. [2021-11-02 21:39:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 21:39:18,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:39:18,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:39:18,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 21:39:18,231 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:39:18,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:39:18,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1977861716, now seen corresponding path program 1 times [2021-11-02 21:39:18,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:39:18,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777701700] [2021-11-02 21:39:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:39:18,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:39:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:39:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 21:39:18,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:39:18,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777701700] [2021-11-02 21:39:18,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777701700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:39:18,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:39:18,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:39:18,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165283255] [2021-11-02 21:39:18,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:39:18,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:39:18,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:39:18,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:18,370 INFO L87 Difference]: Start difference. First operand 1216 states and 1555 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:20,397 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 [] [2021-11-02 21:39:23,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:39:23,936 INFO L93 Difference]: Finished difference Result 2388 states and 3065 transitions. [2021-11-02 21:39:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:39:23,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 21:39:23,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:39:23,940 INFO L225 Difference]: With dead ends: 2388 [2021-11-02 21:39:23,940 INFO L226 Difference]: Without dead ends: 1220 [2021-11-02 21:39:23,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.12ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:23,942 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 3094 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4955.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.72ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3094 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5449.87ms IncrementalHoareTripleChecker+Time [2021-11-02 21:39:23,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3101 Unknown, 0 Unchecked, 8.72ms Time], IncrementalHoareTripleChecker [6 Valid, 3094 Invalid, 1 Unknown, 0 Unchecked, 5449.87ms Time] [2021-11-02 21:39:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-02 21:39:23,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2021-11-02 21:39:23,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1182 states have (on average 1.3189509306260576) internal successors, (1559), 1219 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1559 transitions. [2021-11-02 21:39:23,978 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1559 transitions. Word has length 74 [2021-11-02 21:39:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:39:23,979 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 1559 transitions. [2021-11-02 21:39:23,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1559 transitions. [2021-11-02 21:39:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 21:39:23,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:39:23,984 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] [2021-11-02 21:39:23,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 21:39:23,984 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:39:23,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:39:23,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1383564200, now seen corresponding path program 1 times [2021-11-02 21:39:23,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:39:23,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111553716] [2021-11-02 21:39:23,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:39:23,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:39:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:39:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:39:24,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:39:24,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111553716] [2021-11-02 21:39:24,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111553716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:39:24,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:39:24,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:39:24,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888867363] [2021-11-02 21:39:24,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:39:24,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:39:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:39:24,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:24,180 INFO L87 Difference]: Start difference. First operand 1220 states and 1559 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:26,204 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 [] [2021-11-02 21:39:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:39:30,283 INFO L93 Difference]: Finished difference Result 3487 states and 4486 transitions. [2021-11-02 21:39:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:39:30,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-02 21:39:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:39:30,309 INFO L225 Difference]: With dead ends: 3487 [2021-11-02 21:39:30,309 INFO L226 Difference]: Without dead ends: 2335 [2021-11-02 21:39:30,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:30,315 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1445 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3087 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5360.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.60ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3087 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5971.66ms IncrementalHoareTripleChecker+Time [2021-11-02 21:39:30,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 0 Invalid, 3091 Unknown, 0 Unchecked, 8.60ms Time], IncrementalHoareTripleChecker [3 Valid, 3087 Invalid, 1 Unknown, 0 Unchecked, 5971.66ms Time] [2021-11-02 21:39:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-11-02 21:39:30,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2271. [2021-11-02 21:39:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2233 states have (on average 1.329601433049709) internal successors, (2969), 2270 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 2969 transitions. [2021-11-02 21:39:30,379 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 2969 transitions. Word has length 78 [2021-11-02 21:39:30,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:39:30,381 INFO L470 AbstractCegarLoop]: Abstraction has 2271 states and 2969 transitions. [2021-11-02 21:39:30,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 2969 transitions. [2021-11-02 21:39:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 21:39:30,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:39:30,382 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] [2021-11-02 21:39:30,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 21:39:30,383 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:39:30,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:39:30,385 INFO L85 PathProgramCache]: Analyzing trace with hash -65187952, now seen corresponding path program 1 times [2021-11-02 21:39:30,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:39:30,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694492141] [2021-11-02 21:39:30,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:39:30,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:39:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:39:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:39:30,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:39:30,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694492141] [2021-11-02 21:39:30,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694492141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:39:30,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:39:30,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:39:30,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510192655] [2021-11-02 21:39:30,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:39:30,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:39:30,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:39:30,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:30,563 INFO L87 Difference]: Start difference. First operand 2271 states and 2969 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:32,592 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 [] [2021-11-02 21:39:36,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:39:36,578 INFO L93 Difference]: Finished difference Result 5542 states and 7229 transitions. [2021-11-02 21:39:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:39:36,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-02 21:39:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:39:36,603 INFO L225 Difference]: With dead ends: 5542 [2021-11-02 21:39:36,606 INFO L226 Difference]: Without dead ends: 3339 [2021-11-02 21:39:36,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:36,625 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 703 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5341.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5860.10ms IncrementalHoareTripleChecker+Time [2021-11-02 21:39:36,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [703 Valid, 0 Invalid, 3103 Unknown, 0 Unchecked, 6.54ms Time], IncrementalHoareTripleChecker [1 Valid, 3101 Invalid, 1 Unknown, 0 Unchecked, 5860.10ms Time] [2021-11-02 21:39:36,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2021-11-02 21:39:36,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3287. [2021-11-02 21:39:36,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3249 states have (on average 1.3234841489689135) internal successors, (4300), 3286 states have internal predecessors, (4300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 4300 transitions. [2021-11-02 21:39:36,681 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 4300 transitions. Word has length 79 [2021-11-02 21:39:36,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:39:36,682 INFO L470 AbstractCegarLoop]: Abstraction has 3287 states and 4300 transitions. [2021-11-02 21:39:36,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 4300 transitions. [2021-11-02 21:39:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 21:39:36,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:39:36,686 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] [2021-11-02 21:39:36,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 21:39:36,693 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:39:36,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:39:36,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1595769926, now seen corresponding path program 1 times [2021-11-02 21:39:36,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:39:36,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976659613] [2021-11-02 21:39:36,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:39:36,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:39:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:39:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:39:36,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:39:36,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976659613] [2021-11-02 21:39:36,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976659613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:39:36,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:39:36,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:39:36,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745324402] [2021-11-02 21:39:36,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:39:36,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:39:36,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:39:36,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:36,865 INFO L87 Difference]: Start difference. First operand 3287 states and 4300 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 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) [2021-11-02 21:39:39,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:39:41,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:39:41,212 INFO L93 Difference]: Finished difference Result 3287 states and 4300 transitions. [2021-11-02 21:39:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:39:41,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 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 [2021-11-02 21:39:41,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:39:41,226 INFO L225 Difference]: With dead ends: 3287 [2021-11-02 21:39:41,226 INFO L226 Difference]: Without dead ends: 3285 [2021-11-02 21:39:41,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:41,228 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1463 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3905.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4259.03ms IncrementalHoareTripleChecker+Time [2021-11-02 21:39:41,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1463 Valid, 0 Invalid, 1548 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [0 Valid, 1547 Invalid, 1 Unknown, 0 Unchecked, 4259.03ms Time] [2021-11-02 21:39:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2021-11-02 21:39:41,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 3285. [2021-11-02 21:39:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3285 states, 3248 states have (on average 1.3232758620689655) internal successors, (4298), 3284 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3285 states to 3285 states and 4298 transitions. [2021-11-02 21:39:41,293 INFO L78 Accepts]: Start accepts. Automaton has 3285 states and 4298 transitions. Word has length 87 [2021-11-02 21:39:41,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:39:41,294 INFO L470 AbstractCegarLoop]: Abstraction has 3285 states and 4298 transitions. [2021-11-02 21:39:41,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 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) [2021-11-02 21:39:41,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3285 states and 4298 transitions. [2021-11-02 21:39:41,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 21:39:41,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:39:41,295 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] [2021-11-02 21:39:41,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 21:39:41,296 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:39:41,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:39:41,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1858990689, now seen corresponding path program 1 times [2021-11-02 21:39:41,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:39:41,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044718367] [2021-11-02 21:39:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:39:41,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:39:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:39:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:39:41,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:39:41,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044718367] [2021-11-02 21:39:41,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044718367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:39:41,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:39:41,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:39:41,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301846779] [2021-11-02 21:39:41,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:39:41,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:39:41,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:39:41,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:41,419 INFO L87 Difference]: Start difference. First operand 3285 states and 4298 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) [2021-11-02 21:39:43,442 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 [] [2021-11-02 21:39:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:39:48,251 INFO L93 Difference]: Finished difference Result 8139 states and 10743 transitions. [2021-11-02 21:39:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:39:48,251 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 [2021-11-02 21:39:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:39:48,266 INFO L225 Difference]: With dead ends: 8139 [2021-11-02 21:39:48,266 INFO L226 Difference]: Without dead ends: 4922 [2021-11-02 21:39:48,271 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 [2021-11-02 21:39:48,272 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 950 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 3875 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6018.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.58ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3875 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6639.88ms IncrementalHoareTripleChecker+Time [2021-11-02 21:39:48,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 0 Invalid, 3878 Unknown, 0 Unchecked, 6.58ms Time], IncrementalHoareTripleChecker [2 Valid, 3875 Invalid, 1 Unknown, 0 Unchecked, 6639.88ms Time] [2021-11-02 21:39:48,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4922 states. [2021-11-02 21:39:48,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4922 to 4869. [2021-11-02 21:39:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4869 states, 4832 states have (on average 1.341473509933775) internal successors, (6482), 4868 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4869 states to 4869 states and 6482 transitions. [2021-11-02 21:39:48,439 INFO L78 Accepts]: Start accepts. Automaton has 4869 states and 6482 transitions. Word has length 87 [2021-11-02 21:39:48,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:39:48,439 INFO L470 AbstractCegarLoop]: Abstraction has 4869 states and 6482 transitions. [2021-11-02 21:39:48,439 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) [2021-11-02 21:39:48,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4869 states and 6482 transitions. [2021-11-02 21:39:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 21:39:48,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:39:48,440 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] [2021-11-02 21:39:48,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 21:39:48,441 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:39:48,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:39:48,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2070729988, now seen corresponding path program 1 times [2021-11-02 21:39:48,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:39:48,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196094987] [2021-11-02 21:39:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:39:48,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:39:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:39:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:39:48,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:39:48,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196094987] [2021-11-02 21:39:48,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196094987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:39:48,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:39:48,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:39:48,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336419507] [2021-11-02 21:39:48,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:39:48,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:39:48,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:39:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:48,588 INFO L87 Difference]: Start difference. First operand 4869 states and 6482 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:50,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:39:52,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:39:52,828 INFO L93 Difference]: Finished difference Result 4869 states and 6482 transitions. [2021-11-02 21:39:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:39:52,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-02 21:39:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:39:52,841 INFO L225 Difference]: With dead ends: 4869 [2021-11-02 21:39:52,841 INFO L226 Difference]: Without dead ends: 4867 [2021-11-02 21:39:52,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:52,842 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1460 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3806.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4129.25ms IncrementalHoareTripleChecker+Time [2021-11-02 21:39:52,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1460 Valid, 0 Invalid, 1546 Unknown, 0 Unchecked, 2.61ms Time], IncrementalHoareTripleChecker [0 Valid, 1545 Invalid, 1 Unknown, 0 Unchecked, 4129.25ms Time] [2021-11-02 21:39:52,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2021-11-02 21:39:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4867. [2021-11-02 21:39:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4867 states, 4831 states have (on average 1.3413371972676464) internal successors, (6480), 4866 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 6480 transitions. [2021-11-02 21:39:52,928 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 6480 transitions. Word has length 88 [2021-11-02 21:39:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:39:52,928 INFO L470 AbstractCegarLoop]: Abstraction has 4867 states and 6480 transitions. [2021-11-02 21:39:52,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 6480 transitions. [2021-11-02 21:39:52,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 21:39:52,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:39:52,929 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] [2021-11-02 21:39:52,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 21:39:52,930 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:39:52,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:39:52,930 INFO L85 PathProgramCache]: Analyzing trace with hash 231889680, now seen corresponding path program 1 times [2021-11-02 21:39:52,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:39:52,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569131593] [2021-11-02 21:39:52,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:39:52,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:39:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:39:53,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:39:53,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:39:53,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569131593] [2021-11-02 21:39:53,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569131593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:39:53,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:39:53,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:39:53,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076721183] [2021-11-02 21:39:53,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:39:53,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:39:53,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:39:53,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:53,069 INFO L87 Difference]: Start difference. First operand 4867 states and 6480 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:55,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:39:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:39:57,308 INFO L93 Difference]: Finished difference Result 4867 states and 6480 transitions. [2021-11-02 21:39:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:39:57,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-02 21:39:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:39:57,325 INFO L225 Difference]: With dead ends: 4867 [2021-11-02 21:39:57,328 INFO L226 Difference]: Without dead ends: 4865 [2021-11-02 21:39:57,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:57,331 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1457 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3717.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4122.70ms IncrementalHoareTripleChecker+Time [2021-11-02 21:39:57,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1457 Valid, 0 Invalid, 1544 Unknown, 0 Unchecked, 2.10ms Time], IncrementalHoareTripleChecker [0 Valid, 1543 Invalid, 1 Unknown, 0 Unchecked, 4122.70ms Time] [2021-11-02 21:39:57,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2021-11-02 21:39:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4865. [2021-11-02 21:39:57,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4865 states, 4830 states have (on average 1.34120082815735) internal successors, (6478), 4864 states have internal predecessors, (6478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4865 states to 4865 states and 6478 transitions. [2021-11-02 21:39:57,440 INFO L78 Accepts]: Start accepts. Automaton has 4865 states and 6478 transitions. Word has length 89 [2021-11-02 21:39:57,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:39:57,441 INFO L470 AbstractCegarLoop]: Abstraction has 4865 states and 6478 transitions. [2021-11-02 21:39:57,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:57,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4865 states and 6478 transitions. [2021-11-02 21:39:57,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 21:39:57,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:39:57,445 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] [2021-11-02 21:39:57,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 21:39:57,446 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:39:57,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:39:57,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1401344634, now seen corresponding path program 1 times [2021-11-02 21:39:57,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:39:57,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311756814] [2021-11-02 21:39:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:39:57,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:39:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:39:57,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:39:57,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:39:57,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311756814] [2021-11-02 21:39:57,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311756814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:39:57,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:39:57,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:39:57,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105758683] [2021-11-02 21:39:57,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:39:57,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:39:57,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:39:57,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:39:57,575 INFO L87 Difference]: Start difference. First operand 4865 states and 6478 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:39:59,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:40:03,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:40:03,308 INFO L93 Difference]: Finished difference Result 13993 states and 18741 transitions. [2021-11-02 21:40:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:40:03,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-02 21:40:03,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:40:03,333 INFO L225 Difference]: With dead ends: 13993 [2021-11-02 21:40:03,334 INFO L226 Difference]: Without dead ends: 9196 [2021-11-02 21:40:03,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:03,344 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1365 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 2945 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4942.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2945 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5494.34ms IncrementalHoareTripleChecker+Time [2021-11-02 21:40:03,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1365 Valid, 0 Invalid, 2961 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [15 Valid, 2945 Invalid, 1 Unknown, 0 Unchecked, 5494.34ms Time] [2021-11-02 21:40:03,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9196 states. [2021-11-02 21:40:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9196 to 8879. [2021-11-02 21:40:03,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8879 states, 8844 states have (on average 1.347241067390321) internal successors, (11915), 8878 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:03,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8879 states to 8879 states and 11915 transitions. [2021-11-02 21:40:03,529 INFO L78 Accepts]: Start accepts. Automaton has 8879 states and 11915 transitions. Word has length 90 [2021-11-02 21:40:03,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:40:03,529 INFO L470 AbstractCegarLoop]: Abstraction has 8879 states and 11915 transitions. [2021-11-02 21:40:03,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:03,529 INFO L276 IsEmpty]: Start isEmpty. Operand 8879 states and 11915 transitions. [2021-11-02 21:40:03,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 21:40:03,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:40:03,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:40:03,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 21:40:03,531 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:40:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:40:03,531 INFO L85 PathProgramCache]: Analyzing trace with hash -492000806, now seen corresponding path program 1 times [2021-11-02 21:40:03,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:40:03,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497958008] [2021-11-02 21:40:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:40:03,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:40:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:40:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:40:03,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:40:03,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497958008] [2021-11-02 21:40:03,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497958008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:40:03,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:40:03,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:40:03,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132099857] [2021-11-02 21:40:03,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:40:03,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:40:03,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:40:03,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:03,685 INFO L87 Difference]: Start difference. First operand 8879 states and 11915 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:05,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:40:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:40:07,994 INFO L93 Difference]: Finished difference Result 8879 states and 11915 transitions. [2021-11-02 21:40:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:40:07,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 21:40:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:40:08,026 INFO L225 Difference]: With dead ends: 8879 [2021-11-02 21:40:08,026 INFO L226 Difference]: Without dead ends: 8869 [2021-11-02 21:40:08,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:08,033 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1181 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 1793 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3779.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1793 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4166.06ms IncrementalHoareTripleChecker+Time [2021-11-02 21:40:08,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 0 Invalid, 1802 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [8 Valid, 1793 Invalid, 1 Unknown, 0 Unchecked, 4166.06ms Time] [2021-11-02 21:40:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8869 states. [2021-11-02 21:40:08,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8869 to 8869. [2021-11-02 21:40:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8869 states, 8839 states have (on average 1.3437040389184296) internal successors, (11877), 8868 states have internal predecessors, (11877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:08,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8869 states to 8869 states and 11877 transitions. [2021-11-02 21:40:08,219 INFO L78 Accepts]: Start accepts. Automaton has 8869 states and 11877 transitions. Word has length 91 [2021-11-02 21:40:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:40:08,219 INFO L470 AbstractCegarLoop]: Abstraction has 8869 states and 11877 transitions. [2021-11-02 21:40:08,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 8869 states and 11877 transitions. [2021-11-02 21:40:08,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 21:40:08,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:40:08,221 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] [2021-11-02 21:40:08,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 21:40:08,222 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:40:08,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:40:08,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1927854096, now seen corresponding path program 1 times [2021-11-02 21:40:08,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:40:08,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308811209] [2021-11-02 21:40:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:40:08,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:40:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:40:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:40:08,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:40:08,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308811209] [2021-11-02 21:40:08,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308811209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:40:08,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:40:08,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:40:08,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109886601] [2021-11-02 21:40:08,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:40:08,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:40:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:40:08,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:08,410 INFO L87 Difference]: Start difference. First operand 8869 states and 11877 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:10,440 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 [] [2021-11-02 21:40:14,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:40:14,407 INFO L93 Difference]: Finished difference Result 25375 states and 34171 transitions. [2021-11-02 21:40:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:40:14,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-02 21:40:14,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:40:14,429 INFO L225 Difference]: With dead ends: 25375 [2021-11-02 21:40:14,430 INFO L226 Difference]: Without dead ends: 16566 [2021-11-02 21:40:14,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:14,440 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1335 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5095.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.94ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5632.13ms IncrementalHoareTripleChecker+Time [2021-11-02 21:40:14,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 0 Invalid, 3047 Unknown, 0 Unchecked, 3.94ms Time], IncrementalHoareTripleChecker [28 Valid, 3018 Invalid, 1 Unknown, 0 Unchecked, 5632.13ms Time] [2021-11-02 21:40:14,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16566 states. [2021-11-02 21:40:14,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16566 to 15610. [2021-11-02 21:40:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15610 states, 15580 states have (on average 1.3480744544287548) internal successors, (21003), 15609 states have internal predecessors, (21003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15610 states to 15610 states and 21003 transitions. [2021-11-02 21:40:14,729 INFO L78 Accepts]: Start accepts. Automaton has 15610 states and 21003 transitions. Word has length 92 [2021-11-02 21:40:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:40:14,730 INFO L470 AbstractCegarLoop]: Abstraction has 15610 states and 21003 transitions. [2021-11-02 21:40:14,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:14,730 INFO L276 IsEmpty]: Start isEmpty. Operand 15610 states and 21003 transitions. [2021-11-02 21:40:14,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 21:40:14,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:40:14,732 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] [2021-11-02 21:40:14,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 21:40:14,733 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:40:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:40:14,733 INFO L85 PathProgramCache]: Analyzing trace with hash -848848089, now seen corresponding path program 1 times [2021-11-02 21:40:14,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:40:14,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846863155] [2021-11-02 21:40:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:40:14,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:40:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:40:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:40:14,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:40:14,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846863155] [2021-11-02 21:40:14,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846863155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:40:14,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:40:14,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:40:14,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034792277] [2021-11-02 21:40:14,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:40:14,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:40:14,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:40:14,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:14,913 INFO L87 Difference]: Start difference. First operand 15610 states and 21003 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:16,936 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 [] [2021-11-02 21:40:20,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:40:20,544 INFO L93 Difference]: Finished difference Result 23731 states and 31916 transitions. [2021-11-02 21:40:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:40:20,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-02 21:40:20,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:40:20,557 INFO L225 Difference]: With dead ends: 23731 [2021-11-02 21:40:20,557 INFO L226 Difference]: Without dead ends: 8187 [2021-11-02 21:40:20,572 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 [2021-11-02 21:40:20,575 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 3073 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4843.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.30ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3073 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5417.39ms IncrementalHoareTripleChecker+Time [2021-11-02 21:40:20,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 3075 Unknown, 0 Unchecked, 3.30ms Time], IncrementalHoareTripleChecker [1 Valid, 3073 Invalid, 1 Unknown, 0 Unchecked, 5417.39ms Time] [2021-11-02 21:40:20,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2021-11-02 21:40:20,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 8130. [2021-11-02 21:40:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8130 states, 8100 states have (on average 1.3482716049382717) internal successors, (10921), 8129 states have internal predecessors, (10921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:20,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8130 states to 8130 states and 10921 transitions. [2021-11-02 21:40:20,818 INFO L78 Accepts]: Start accepts. Automaton has 8130 states and 10921 transitions. Word has length 113 [2021-11-02 21:40:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:40:20,818 INFO L470 AbstractCegarLoop]: Abstraction has 8130 states and 10921 transitions. [2021-11-02 21:40:20,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand 8130 states and 10921 transitions. [2021-11-02 21:40:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-02 21:40:20,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:40:20,821 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] [2021-11-02 21:40:20,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 21:40:20,821 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:40:20,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:40:20,822 INFO L85 PathProgramCache]: Analyzing trace with hash -2116476241, now seen corresponding path program 1 times [2021-11-02 21:40:20,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:40:20,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610153547] [2021-11-02 21:40:20,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:40:20,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:40:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:40:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:40:20,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:40:20,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610153547] [2021-11-02 21:40:20,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610153547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:40:20,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:40:20,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:40:20,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643136841] [2021-11-02 21:40:20,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:40:20,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:40:20,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:40:20,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:20,964 INFO L87 Difference]: Start difference. First operand 8130 states and 10921 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:23,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:40:26,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:40:26,767 INFO L93 Difference]: Finished difference Result 18545 states and 24983 transitions. [2021-11-02 21:40:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:40:26,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-02 21:40:26,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:40:26,779 INFO L225 Difference]: With dead ends: 18545 [2021-11-02 21:40:26,779 INFO L226 Difference]: Without dead ends: 10606 [2021-11-02 21:40:26,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:26,786 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 991 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 2949 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4930.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.41ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2949 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5460.02ms IncrementalHoareTripleChecker+Time [2021-11-02 21:40:26,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 0 Invalid, 2970 Unknown, 0 Unchecked, 4.41ms Time], IncrementalHoareTripleChecker [20 Valid, 2949 Invalid, 1 Unknown, 0 Unchecked, 5460.02ms Time] [2021-11-02 21:40:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10606 states. [2021-11-02 21:40:27,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10606 to 10509. [2021-11-02 21:40:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10509 states, 10479 states have (on average 1.3473613894455578) internal successors, (14119), 10508 states have internal predecessors, (14119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10509 states to 10509 states and 14119 transitions. [2021-11-02 21:40:27,030 INFO L78 Accepts]: Start accepts. Automaton has 10509 states and 14119 transitions. Word has length 116 [2021-11-02 21:40:27,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:40:27,030 INFO L470 AbstractCegarLoop]: Abstraction has 10509 states and 14119 transitions. [2021-11-02 21:40:27,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:27,030 INFO L276 IsEmpty]: Start isEmpty. Operand 10509 states and 14119 transitions. [2021-11-02 21:40:27,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 21:40:27,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:40:27,032 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:40:27,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 21:40:27,033 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:40:27,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:40:27,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1412012122, now seen corresponding path program 1 times [2021-11-02 21:40:27,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:40:27,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122971044] [2021-11-02 21:40:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:40:27,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:40:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:40:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 21:40:27,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:40:27,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122971044] [2021-11-02 21:40:27,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122971044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:40:27,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:40:27,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:40:27,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151394132] [2021-11-02 21:40:27,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:40:27,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:40:27,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:40:27,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:27,162 INFO L87 Difference]: Start difference. First operand 10509 states and 14119 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:29,187 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 [] [2021-11-02 21:40:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:40:32,638 INFO L93 Difference]: Finished difference Result 10509 states and 14119 transitions. [2021-11-02 21:40:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:40:32,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-02 21:40:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:40:32,651 INFO L225 Difference]: With dead ends: 10509 [2021-11-02 21:40:32,651 INFO L226 Difference]: Without dead ends: 10501 [2021-11-02 21:40:32,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:32,654 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 239 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 2798 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4810.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.86ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2798 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5256.60ms IncrementalHoareTripleChecker+Time [2021-11-02 21:40:32,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 0 Invalid, 2805 Unknown, 0 Unchecked, 3.86ms Time], IncrementalHoareTripleChecker [6 Valid, 2798 Invalid, 1 Unknown, 0 Unchecked, 5256.60ms Time] [2021-11-02 21:40:32,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10501 states. [2021-11-02 21:40:32,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10501 to 10501. [2021-11-02 21:40:32,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10501 states, 10475 states have (on average 1.3457756563245824) internal successors, (14097), 10500 states have internal predecessors, (14097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:32,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10501 states to 10501 states and 14097 transitions. [2021-11-02 21:40:32,829 INFO L78 Accepts]: Start accepts. Automaton has 10501 states and 14097 transitions. Word has length 119 [2021-11-02 21:40:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:40:32,829 INFO L470 AbstractCegarLoop]: Abstraction has 10501 states and 14097 transitions. [2021-11-02 21:40:32,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:32,829 INFO L276 IsEmpty]: Start isEmpty. Operand 10501 states and 14097 transitions. [2021-11-02 21:40:32,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 21:40:32,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:40:32,831 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] [2021-11-02 21:40:32,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 21:40:32,831 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:40:32,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:40:32,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1849179054, now seen corresponding path program 1 times [2021-11-02 21:40:32,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:40:32,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678883707] [2021-11-02 21:40:32,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:40:32,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:40:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:40:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 21:40:32,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:40:32,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678883707] [2021-11-02 21:40:32,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678883707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:40:32,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:40:32,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:40:32,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563320804] [2021-11-02 21:40:32,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:40:32,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:40:32,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:40:32,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:32,942 INFO L87 Difference]: Start difference. First operand 10501 states and 14097 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:34,966 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 [] [2021-11-02 21:40:38,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:40:38,985 INFO L93 Difference]: Finished difference Result 24382 states and 32945 transitions. [2021-11-02 21:40:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:40:38,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-02 21:40:38,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:40:39,010 INFO L225 Difference]: With dead ends: 24382 [2021-11-02 21:40:39,011 INFO L226 Difference]: Without dead ends: 14072 [2021-11-02 21:40:39,028 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 [2021-11-02 21:40:39,028 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1120 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5125.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.56ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5698.51ms IncrementalHoareTripleChecker+Time [2021-11-02 21:40:39,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 0 Invalid, 3048 Unknown, 0 Unchecked, 4.56ms Time], IncrementalHoareTripleChecker [9 Valid, 3038 Invalid, 1 Unknown, 0 Unchecked, 5698.51ms Time] [2021-11-02 21:40:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14072 states. [2021-11-02 21:40:39,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14072 to 13815. [2021-11-02 21:40:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13815 states, 13789 states have (on average 1.355573283051708) internal successors, (18692), 13814 states have internal predecessors, (18692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13815 states to 13815 states and 18692 transitions. [2021-11-02 21:40:39,369 INFO L78 Accepts]: Start accepts. Automaton has 13815 states and 18692 transitions. Word has length 121 [2021-11-02 21:40:39,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:40:39,369 INFO L470 AbstractCegarLoop]: Abstraction has 13815 states and 18692 transitions. [2021-11-02 21:40:39,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:39,370 INFO L276 IsEmpty]: Start isEmpty. Operand 13815 states and 18692 transitions. [2021-11-02 21:40:39,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-02 21:40:39,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:40:39,372 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] [2021-11-02 21:40:39,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 21:40:39,372 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:40:39,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:40:39,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1139305928, now seen corresponding path program 1 times [2021-11-02 21:40:39,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:40:39,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160707437] [2021-11-02 21:40:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:40:39,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:40:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:40:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 21:40:39,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:40:39,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160707437] [2021-11-02 21:40:39,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160707437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:40:39,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:40:39,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:40:39,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489258188] [2021-11-02 21:40:39,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:40:39,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:40:39,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:40:39,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:39,524 INFO L87 Difference]: Start difference. First operand 13815 states and 18692 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:41,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:40:46,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:40:46,263 INFO L93 Difference]: Finished difference Result 27531 states and 37260 transitions. [2021-11-02 21:40:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:40:46,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 128 [2021-11-02 21:40:46,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:40:46,288 INFO L225 Difference]: With dead ends: 27531 [2021-11-02 21:40:46,288 INFO L226 Difference]: Without dead ends: 13907 [2021-11-02 21:40:46,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:40:46,314 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1280 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 3955 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5663.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.85ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3955 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6302.14ms IncrementalHoareTripleChecker+Time [2021-11-02 21:40:46,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1280 Valid, 0 Invalid, 3977 Unknown, 0 Unchecked, 4.85ms Time], IncrementalHoareTripleChecker [21 Valid, 3955 Invalid, 1 Unknown, 0 Unchecked, 6302.14ms Time] [2021-11-02 21:40:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13907 states. [2021-11-02 21:40:46,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13907 to 13569. [2021-11-02 21:40:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13569 states, 13547 states have (on average 1.3544696242710563) internal successors, (18349), 13568 states have internal predecessors, (18349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13569 states to 13569 states and 18349 transitions. [2021-11-02 21:40:46,645 INFO L78 Accepts]: Start accepts. Automaton has 13569 states and 18349 transitions. Word has length 128 [2021-11-02 21:40:46,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:40:46,646 INFO L470 AbstractCegarLoop]: Abstraction has 13569 states and 18349 transitions. [2021-11-02 21:40:46,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:46,646 INFO L276 IsEmpty]: Start isEmpty. Operand 13569 states and 18349 transitions. [2021-11-02 21:40:46,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-02 21:40:46,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:40:46,653 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] [2021-11-02 21:40:46,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 21:40:46,654 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:40:46,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:40:46,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1343902563, now seen corresponding path program 1 times [2021-11-02 21:40:46,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:40:46,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359160944] [2021-11-02 21:40:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:40:46,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:40:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:40:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 21:40:46,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:40:46,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359160944] [2021-11-02 21:40:46,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359160944] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 21:40:46,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144233229] [2021-11-02 21:40:46,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:40:46,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 21:40:46,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:40:47,008 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) [2021-11-02 21:40:47,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 21:40:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:40:47,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 21:40:47,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 21:40:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 21:40:47,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 21:40:48,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 21:40:48,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144233229] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 21:40:48,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 21:40:48,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 21:40:48,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129600372] [2021-11-02 21:40:48,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 21:40:48,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:40:48,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 21:40:48,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 21:40:48,286 INFO L87 Difference]: Start difference. First operand 13569 states and 18349 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:50,312 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 [] [2021-11-02 21:40:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:40:54,415 INFO L93 Difference]: Finished difference Result 27124 states and 36702 transitions. [2021-11-02 21:40:54,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:40:54,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 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 128 [2021-11-02 21:40:54,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:40:54,438 INFO L225 Difference]: With dead ends: 27124 [2021-11-02 21:40:54,439 INFO L226 Difference]: Without dead ends: 13588 [2021-11-02 21:40:54,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.73ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 21:40:54,454 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 3057 mSolverCounterSat, 69 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5123.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.93ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3057 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5698.90ms IncrementalHoareTripleChecker+Time [2021-11-02 21:40:54,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3127 Unknown, 0 Unchecked, 5.93ms Time], IncrementalHoareTripleChecker [69 Valid, 3057 Invalid, 1 Unknown, 0 Unchecked, 5698.90ms Time] [2021-11-02 21:40:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13588 states. [2021-11-02 21:40:54,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13588 to 13588. [2021-11-02 21:40:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13588 states, 13566 states have (on average 1.3539731682146543) internal successors, (18368), 13587 states have internal predecessors, (18368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13588 states to 13588 states and 18368 transitions. [2021-11-02 21:40:54,741 INFO L78 Accepts]: Start accepts. Automaton has 13588 states and 18368 transitions. Word has length 128 [2021-11-02 21:40:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:40:54,741 INFO L470 AbstractCegarLoop]: Abstraction has 13588 states and 18368 transitions. [2021-11-02 21:40:54,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 13588 states and 18368 transitions. [2021-11-02 21:40:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-02 21:40:54,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:40:54,744 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:40:54,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 21:40:54,959 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,SelfDestructingSolverStorable17 [2021-11-02 21:40:54,960 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:40:54,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:40:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash -323582944, now seen corresponding path program 2 times [2021-11-02 21:40:54,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:40:54,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733898438] [2021-11-02 21:40:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:40:54,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:40:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:40:55,227 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-02 21:40:55,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:40:55,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733898438] [2021-11-02 21:40:55,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733898438] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 21:40:55,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457108215] [2021-11-02 21:40:55,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 21:40:55,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 21:40:55,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:40:55,229 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) [2021-11-02 21:40:55,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 21:40:55,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 21:40:55,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 21:40:55,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 21:40:55,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 21:40:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-02 21:40:56,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 21:40:56,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457108215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:40:56,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 21:40:56,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-11-02 21:40:56,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343981968] [2021-11-02 21:40:56,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:40:56,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:40:56,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:40:56,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-02 21:40:56,190 INFO L87 Difference]: Start difference. First operand 13588 states and 18368 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:40:58,218 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 [] [2021-11-02 21:41:09,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:41:09,373 INFO L93 Difference]: Finished difference Result 62474 states and 84588 transitions. [2021-11-02 21:41:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:41:09,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 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 147 [2021-11-02 21:41:09,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:41:09,453 INFO L225 Difference]: With dead ends: 62474 [2021-11-02 21:41:09,454 INFO L226 Difference]: Without dead ends: 49096 [2021-11-02 21:41:09,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 73.26ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-02 21:41:09,484 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7178 mSDsluCounter, 8067 mSDsCounter, 0 mSdLazyCounter, 10896 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10670.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7178 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.26ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 10896 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11991.27ms IncrementalHoareTripleChecker+Time [2021-11-02 21:41:09,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7178 Valid, 0 Invalid, 10909 Unknown, 0 Unchecked, 28.26ms Time], IncrementalHoareTripleChecker [12 Valid, 10896 Invalid, 1 Unknown, 0 Unchecked, 11991.27ms Time] [2021-11-02 21:41:09,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49096 states. [2021-11-02 21:41:10,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49096 to 13508. [2021-11-02 21:41:10,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13508 states, 13490 states have (on average 1.352853965900667) internal successors, (18250), 13507 states have internal predecessors, (18250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13508 states to 13508 states and 18250 transitions. [2021-11-02 21:41:10,115 INFO L78 Accepts]: Start accepts. Automaton has 13508 states and 18250 transitions. Word has length 147 [2021-11-02 21:41:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:41:10,116 INFO L470 AbstractCegarLoop]: Abstraction has 13508 states and 18250 transitions. [2021-11-02 21:41:10,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 13508 states and 18250 transitions. [2021-11-02 21:41:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-02 21:41:10,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:41:10,119 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:41:10,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 21:41:10,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 21:41:10,334 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:41:10,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:41:10,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1841910766, now seen corresponding path program 1 times [2021-11-02 21:41:10,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:41:10,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502945744] [2021-11-02 21:41:10,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:41:10,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:41:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:41:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-02 21:41:10,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:41:10,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502945744] [2021-11-02 21:41:10,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502945744] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 21:41:10,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684669622] [2021-11-02 21:41:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:41:10,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 21:41:10,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:41:10,562 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) [2021-11-02 21:41:10,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 21:41:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:41:11,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 21:41:11,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 21:41:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-02 21:41:11,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 21:41:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-02 21:41:11,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684669622] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 21:41:11,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 21:41:11,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-11-02 21:41:11,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778473140] [2021-11-02 21:41:11,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 21:41:11,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:41:11,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 21:41:11,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=148, Unknown=0, NotChecked=0, Total=272 [2021-11-02 21:41:11,989 INFO L87 Difference]: Start difference. First operand 13508 states and 18250 transitions. Second operand has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:14,013 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 [] [2021-11-02 21:41:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:41:18,718 INFO L93 Difference]: Finished difference Result 27008 states and 36519 transitions. [2021-11-02 21:41:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 21:41:18,718 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 states have internal predecessors, (140), 0 states have call successors, (0), 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 152 [2021-11-02 21:41:18,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:41:18,740 INFO L225 Difference]: With dead ends: 27008 [2021-11-02 21:41:18,741 INFO L226 Difference]: Without dead ends: 13536 [2021-11-02 21:41:18,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 160.28ms TimeCoverageRelationStatistics Valid=124, Invalid=148, Unknown=0, NotChecked=0, Total=272 [2021-11-02 21:41:18,759 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 4607 mSolverCounterSat, 131 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5664.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.25ms SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 4607 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6255.94ms IncrementalHoareTripleChecker+Time [2021-11-02 21:41:18,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 4739 Unknown, 0 Unchecked, 6.25ms Time], IncrementalHoareTripleChecker [131 Valid, 4607 Invalid, 1 Unknown, 0 Unchecked, 6255.94ms Time] [2021-11-02 21:41:18,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13536 states. [2021-11-02 21:41:19,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13536 to 13536. [2021-11-02 21:41:19,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13518 states have (on average 1.3521230951324161) internal successors, (18278), 13535 states have internal predecessors, (18278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 18278 transitions. [2021-11-02 21:41:19,319 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 18278 transitions. Word has length 152 [2021-11-02 21:41:19,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:41:19,319 INFO L470 AbstractCegarLoop]: Abstraction has 13536 states and 18278 transitions. [2021-11-02 21:41:19,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:19,320 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 18278 transitions. [2021-11-02 21:41:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-02 21:41:19,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:41:19,322 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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] [2021-11-02 21:41:19,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 21:41:19,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 21:41:19,544 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:41:19,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:41:19,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1465182674, now seen corresponding path program 2 times [2021-11-02 21:41:19,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:41:19,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144031477] [2021-11-02 21:41:19,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:41:19,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:41:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:41:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:41:19,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:41:19,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144031477] [2021-11-02 21:41:19,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144031477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:41:19,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:41:19,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:41:19,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515191789] [2021-11-02 21:41:19,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:41:19,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:41:19,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:41:19,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:41:19,748 INFO L87 Difference]: Start difference. First operand 13536 states and 18278 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:21,772 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 [] [2021-11-02 21:41:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:41:30,432 INFO L93 Difference]: Finished difference Result 31997 states and 43150 transitions. [2021-11-02 21:41:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 21:41:30,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 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 180 [2021-11-02 21:41:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:41:30,466 INFO L225 Difference]: With dead ends: 31997 [2021-11-02 21:41:30,467 INFO L226 Difference]: Without dead ends: 18699 [2021-11-02 21:41:30,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.65ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 21:41:30,487 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3238 mSDsluCounter, 4519 mSDsCounter, 0 mSdLazyCounter, 7178 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8909.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3238 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7178 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9841.37ms IncrementalHoareTripleChecker+Time [2021-11-02 21:41:30,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3238 Valid, 0 Invalid, 7179 Unknown, 0 Unchecked, 17.01ms Time], IncrementalHoareTripleChecker [0 Valid, 7178 Invalid, 1 Unknown, 0 Unchecked, 9841.37ms Time] [2021-11-02 21:41:30,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18699 states. [2021-11-02 21:41:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18699 to 13572. [2021-11-02 21:41:31,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13572 states, 13554 states have (on average 1.3511878412276819) internal successors, (18314), 13571 states have internal predecessors, (18314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13572 states to 13572 states and 18314 transitions. [2021-11-02 21:41:31,025 INFO L78 Accepts]: Start accepts. Automaton has 13572 states and 18314 transitions. Word has length 180 [2021-11-02 21:41:31,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:41:31,026 INFO L470 AbstractCegarLoop]: Abstraction has 13572 states and 18314 transitions. [2021-11-02 21:41:31,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand 13572 states and 18314 transitions. [2021-11-02 21:41:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-02 21:41:31,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:41:31,030 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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] [2021-11-02 21:41:31,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 21:41:31,030 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:41:31,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:41:31,031 INFO L85 PathProgramCache]: Analyzing trace with hash 416430971, now seen corresponding path program 1 times [2021-11-02 21:41:31,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:41:31,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301342585] [2021-11-02 21:41:31,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:41:31,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:41:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:41:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:41:31,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:41:31,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301342585] [2021-11-02 21:41:31,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301342585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:41:31,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:41:31,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:41:31,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107841518] [2021-11-02 21:41:31,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:41:31,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:41:31,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:41:31,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:41:31,225 INFO L87 Difference]: Start difference. First operand 13572 states and 18314 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:33,250 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 [] [2021-11-02 21:41:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:41:42,719 INFO L93 Difference]: Finished difference Result 50962 states and 68902 transitions. [2021-11-02 21:41:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 21:41:42,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 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 189 [2021-11-02 21:41:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:41:42,780 INFO L225 Difference]: With dead ends: 50962 [2021-11-02 21:41:42,780 INFO L226 Difference]: Without dead ends: 37628 [2021-11-02 21:41:42,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.62ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 21:41:42,805 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6366 mSDsluCounter, 5375 mSDsCounter, 0 mSdLazyCounter, 8188 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9015.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6366 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.88ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8188 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10046.63ms IncrementalHoareTripleChecker+Time [2021-11-02 21:41:42,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6366 Valid, 0 Invalid, 8193 Unknown, 0 Unchecked, 19.88ms Time], IncrementalHoareTripleChecker [4 Valid, 8188 Invalid, 1 Unknown, 0 Unchecked, 10046.63ms Time] [2021-11-02 21:41:42,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37628 states. [2021-11-02 21:41:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37628 to 13572. [2021-11-02 21:41:43,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13572 states, 13554 states have (on average 1.3503024937287886) internal successors, (18302), 13571 states have internal predecessors, (18302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:43,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13572 states to 13572 states and 18302 transitions. [2021-11-02 21:41:43,492 INFO L78 Accepts]: Start accepts. Automaton has 13572 states and 18302 transitions. Word has length 189 [2021-11-02 21:41:43,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:41:43,492 INFO L470 AbstractCegarLoop]: Abstraction has 13572 states and 18302 transitions. [2021-11-02 21:41:43,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand 13572 states and 18302 transitions. [2021-11-02 21:41:43,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-02 21:41:43,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:41:43,495 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:41:43,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 21:41:43,496 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:41:43,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:41:43,496 INFO L85 PathProgramCache]: Analyzing trace with hash -324355274, now seen corresponding path program 1 times [2021-11-02 21:41:43,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:41:43,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303187725] [2021-11-02 21:41:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:41:43,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:41:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:41:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:41:43,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:41:43,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303187725] [2021-11-02 21:41:43,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303187725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:41:43,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:41:43,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 21:41:43,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255408365] [2021-11-02 21:41:43,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 21:41:43,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:41:43,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 21:41:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 21:41:43,767 INFO L87 Difference]: Start difference. First operand 13572 states and 18302 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:45,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:41:59,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:41:59,096 INFO L93 Difference]: Finished difference Result 36176 states and 48686 transitions. [2021-11-02 21:41:59,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 21:41:59,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 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 190 [2021-11-02 21:41:59,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:41:59,125 INFO L225 Difference]: With dead ends: 36176 [2021-11-02 21:41:59,126 INFO L226 Difference]: Without dead ends: 22842 [2021-11-02 21:41:59,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 105.33ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-11-02 21:41:59,140 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5379 mSDsluCounter, 9544 mSDsCounter, 0 mSdLazyCounter, 13236 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12585.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5379 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.32ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13236 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13992.90ms IncrementalHoareTripleChecker+Time [2021-11-02 21:41:59,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5379 Valid, 0 Invalid, 13243 Unknown, 0 Unchecked, 26.32ms Time], IncrementalHoareTripleChecker [6 Valid, 13236 Invalid, 1 Unknown, 0 Unchecked, 13992.90ms Time] [2021-11-02 21:41:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22842 states. [2021-11-02 21:41:59,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22842 to 13764. [2021-11-02 21:41:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13764 states, 13746 states have (on average 1.3454095736941656) internal successors, (18494), 13763 states have internal predecessors, (18494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13764 states to 13764 states and 18494 transitions. [2021-11-02 21:41:59,844 INFO L78 Accepts]: Start accepts. Automaton has 13764 states and 18494 transitions. Word has length 190 [2021-11-02 21:41:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:41:59,845 INFO L470 AbstractCegarLoop]: Abstraction has 13764 states and 18494 transitions. [2021-11-02 21:41:59,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:41:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 13764 states and 18494 transitions. [2021-11-02 21:41:59,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-02 21:41:59,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:41:59,847 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:41:59,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 21:41:59,848 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:41:59,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:41:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1509933084, now seen corresponding path program 1 times [2021-11-02 21:41:59,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:41:59,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839092538] [2021-11-02 21:41:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:41:59,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:41:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:42:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:42:00,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:42:00,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839092538] [2021-11-02 21:42:00,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839092538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:42:00,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:42:00,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:42:00,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942095304] [2021-11-02 21:42:00,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:42:00,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:42:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:42:00,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:42:00,059 INFO L87 Difference]: Start difference. First operand 13764 states and 18494 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:02,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:42:10,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:42:10,293 INFO L93 Difference]: Finished difference Result 32523 states and 43586 transitions. [2021-11-02 21:42:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 21:42:10,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 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 [2021-11-02 21:42:10,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:42:10,321 INFO L225 Difference]: With dead ends: 32523 [2021-11-02 21:42:10,322 INFO L226 Difference]: Without dead ends: 18997 [2021-11-02 21:42:10,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 38.94ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 21:42:10,342 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2875 mSDsluCounter, 4599 mSDsCounter, 0 mSdLazyCounter, 7138 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8303.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2875 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7138 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9226.54ms IncrementalHoareTripleChecker+Time [2021-11-02 21:42:10,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2875 Valid, 0 Invalid, 7139 Unknown, 0 Unchecked, 13.57ms Time], IncrementalHoareTripleChecker [0 Valid, 7138 Invalid, 1 Unknown, 0 Unchecked, 9226.54ms Time] [2021-11-02 21:42:10,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18997 states. [2021-11-02 21:42:11,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18997 to 13848. [2021-11-02 21:42:11,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13848 states, 13830 states have (on average 1.3433116413593638) internal successors, (18578), 13847 states have internal predecessors, (18578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13848 states to 13848 states and 18578 transitions. [2021-11-02 21:42:11,041 INFO L78 Accepts]: Start accepts. Automaton has 13848 states and 18578 transitions. Word has length 193 [2021-11-02 21:42:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:42:11,042 INFO L470 AbstractCegarLoop]: Abstraction has 13848 states and 18578 transitions. [2021-11-02 21:42:11,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 13848 states and 18578 transitions. [2021-11-02 21:42:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-02 21:42:11,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:42:11,044 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:42:11,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 21:42:11,044 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:42:11,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:42:11,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1435508210, now seen corresponding path program 1 times [2021-11-02 21:42:11,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:42:11,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451831058] [2021-11-02 21:42:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:42:11,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:42:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:42:11,251 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:42:11,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:42:11,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451831058] [2021-11-02 21:42:11,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451831058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:42:11,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:42:11,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:42:11,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334385458] [2021-11-02 21:42:11,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:42:11,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:42:11,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:42:11,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:42:11,253 INFO L87 Difference]: Start difference. First operand 13848 states and 18578 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:13,280 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 [] [2021-11-02 21:42:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:42:21,036 INFO L93 Difference]: Finished difference Result 32685 states and 43742 transitions. [2021-11-02 21:42:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 21:42:21,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 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 197 [2021-11-02 21:42:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:42:21,072 INFO L225 Difference]: With dead ends: 32685 [2021-11-02 21:42:21,072 INFO L226 Difference]: Without dead ends: 19075 [2021-11-02 21:42:21,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 39.02ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 21:42:21,092 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2899 mSDsluCounter, 4571 mSDsCounter, 0 mSdLazyCounter, 7106 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7821.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2899 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.37ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7106 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8639.73ms IncrementalHoareTripleChecker+Time [2021-11-02 21:42:21,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2899 Valid, 0 Invalid, 7109 Unknown, 0 Unchecked, 12.37ms Time], IncrementalHoareTripleChecker [2 Valid, 7106 Invalid, 1 Unknown, 0 Unchecked, 8639.73ms Time] [2021-11-02 21:42:21,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19075 states. [2021-11-02 21:42:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19075 to 13806. [2021-11-02 21:42:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13806 states, 13788 states have (on average 1.3439222512329563) internal successors, (18530), 13805 states have internal predecessors, (18530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:21,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13806 states to 13806 states and 18530 transitions. [2021-11-02 21:42:21,994 INFO L78 Accepts]: Start accepts. Automaton has 13806 states and 18530 transitions. Word has length 197 [2021-11-02 21:42:21,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:42:21,995 INFO L470 AbstractCegarLoop]: Abstraction has 13806 states and 18530 transitions. [2021-11-02 21:42:21,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:21,995 INFO L276 IsEmpty]: Start isEmpty. Operand 13806 states and 18530 transitions. [2021-11-02 21:42:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-02 21:42:21,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:42:21,998 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:42:21,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 21:42:21,999 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:42:21,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:42:21,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1036216531, now seen corresponding path program 1 times [2021-11-02 21:42:21,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:42:22,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623046757] [2021-11-02 21:42:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:42:22,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:42:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:42:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-02 21:42:22,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:42:22,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623046757] [2021-11-02 21:42:22,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623046757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:42:22,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:42:22,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:42:22,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410203247] [2021-11-02 21:42:22,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:42:22,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:42:22,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:42:22,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:42:22,254 INFO L87 Difference]: Start difference. First operand 13806 states and 18530 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 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) [2021-11-02 21:42:24,286 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 [] [2021-11-02 21:42:36,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:42:36,045 INFO L93 Difference]: Finished difference Result 32501 states and 43649 transitions. [2021-11-02 21:42:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:42:36,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 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) Word has length 210 [2021-11-02 21:42:36,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:42:36,106 INFO L225 Difference]: With dead ends: 32501 [2021-11-02 21:42:36,107 INFO L226 Difference]: Without dead ends: 32411 [2021-11-02 21:42:36,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.92ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 21:42:36,120 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5226 mSDsluCounter, 7104 mSDsCounter, 0 mSdLazyCounter, 9945 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10888.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5226 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.08ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9945 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12035.12ms IncrementalHoareTripleChecker+Time [2021-11-02 21:42:36,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5226 Valid, 0 Invalid, 9952 Unknown, 0 Unchecked, 18.08ms Time], IncrementalHoareTripleChecker [6 Valid, 9945 Invalid, 1 Unknown, 0 Unchecked, 12035.12ms Time] [2021-11-02 21:42:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32411 states. [2021-11-02 21:42:36,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32411 to 13718. [2021-11-02 21:42:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13718 states, 13700 states have (on average 1.3432846715328468) internal successors, (18403), 13717 states have internal predecessors, (18403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13718 states to 13718 states and 18403 transitions. [2021-11-02 21:42:36,988 INFO L78 Accepts]: Start accepts. Automaton has 13718 states and 18403 transitions. Word has length 210 [2021-11-02 21:42:36,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:42:36,988 INFO L470 AbstractCegarLoop]: Abstraction has 13718 states and 18403 transitions. [2021-11-02 21:42:36,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 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) [2021-11-02 21:42:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 13718 states and 18403 transitions. [2021-11-02 21:42:36,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-02 21:42:36,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:42:36,991 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:42:36,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 21:42:36,991 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:42:36,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:42:36,991 INFO L85 PathProgramCache]: Analyzing trace with hash 335151953, now seen corresponding path program 1 times [2021-11-02 21:42:36,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:42:36,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916486072] [2021-11-02 21:42:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:42:36,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:42:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:42:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-02 21:42:37,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:42:37,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916486072] [2021-11-02 21:42:37,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916486072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:42:37,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:42:37,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:42:37,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408034346] [2021-11-02 21:42:37,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:42:37,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:42:37,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:42:37,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:42:37,143 INFO L87 Difference]: Start difference. First operand 13718 states and 18403 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 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) [2021-11-02 21:42:39,169 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 [] [2021-11-02 21:42:44,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:42:44,985 INFO L93 Difference]: Finished difference Result 24142 states and 32356 transitions. [2021-11-02 21:42:44,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:42:44,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 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) Word has length 210 [2021-11-02 21:42:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:42:45,001 INFO L225 Difference]: With dead ends: 24142 [2021-11-02 21:42:45,001 INFO L226 Difference]: Without dead ends: 10662 [2021-11-02 21:42:45,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:42:45,017 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1348 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 3914 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6372.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.48ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7045.25ms IncrementalHoareTripleChecker+Time [2021-11-02 21:42:45,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 0 Invalid, 3926 Unknown, 0 Unchecked, 6.48ms Time], IncrementalHoareTripleChecker [11 Valid, 3914 Invalid, 1 Unknown, 0 Unchecked, 7045.25ms Time] [2021-11-02 21:42:45,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10662 states. [2021-11-02 21:42:45,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10662 to 10519. [2021-11-02 21:42:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10519 states, 10509 states have (on average 1.338091159958131) internal successors, (14062), 10518 states have internal predecessors, (14062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:45,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10519 states to 10519 states and 14062 transitions. [2021-11-02 21:42:45,546 INFO L78 Accepts]: Start accepts. Automaton has 10519 states and 14062 transitions. Word has length 210 [2021-11-02 21:42:45,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:42:45,546 INFO L470 AbstractCegarLoop]: Abstraction has 10519 states and 14062 transitions. [2021-11-02 21:42:45,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 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) [2021-11-02 21:42:45,547 INFO L276 IsEmpty]: Start isEmpty. Operand 10519 states and 14062 transitions. [2021-11-02 21:42:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-02 21:42:45,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:42:45,556 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:42:45,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 21:42:45,557 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:42:45,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:42:45,557 INFO L85 PathProgramCache]: Analyzing trace with hash -214714796, now seen corresponding path program 1 times [2021-11-02 21:42:45,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:42:45,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288269357] [2021-11-02 21:42:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:42:45,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:42:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:42:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-02 21:42:45,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:42:45,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288269357] [2021-11-02 21:42:45,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288269357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:42:45,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:42:45,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:42:45,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800343312] [2021-11-02 21:42:45,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:42:45,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:42:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:42:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:42:45,806 INFO L87 Difference]: Start difference. First operand 10519 states and 14062 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:47,830 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 [] [2021-11-02 21:42:57,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:42:57,460 INFO L93 Difference]: Finished difference Result 24187 states and 32319 transitions. [2021-11-02 21:42:57,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 21:42:57,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 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 215 [2021-11-02 21:42:57,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:42:57,485 INFO L225 Difference]: With dead ends: 24187 [2021-11-02 21:42:57,485 INFO L226 Difference]: Without dead ends: 13906 [2021-11-02 21:42:57,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.71ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 21:42:57,500 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3091 mSDsluCounter, 5481 mSDsCounter, 0 mSdLazyCounter, 8293 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9628.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3091 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.05ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8293 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10603.50ms IncrementalHoareTripleChecker+Time [2021-11-02 21:42:57,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3091 Valid, 0 Invalid, 8297 Unknown, 0 Unchecked, 18.05ms Time], IncrementalHoareTripleChecker [3 Valid, 8293 Invalid, 1 Unknown, 0 Unchecked, 10603.50ms Time] [2021-11-02 21:42:57,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13906 states. [2021-11-02 21:42:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13906 to 7147. [2021-11-02 21:42:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 7137 states have (on average 1.33319321843912) internal successors, (9515), 7146 states have internal predecessors, (9515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:57,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9515 transitions. [2021-11-02 21:42:57,999 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9515 transitions. Word has length 215 [2021-11-02 21:42:57,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:42:58,000 INFO L470 AbstractCegarLoop]: Abstraction has 7147 states and 9515 transitions. [2021-11-02 21:42:58,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:58,000 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9515 transitions. [2021-11-02 21:42:58,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-02 21:42:58,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:42:58,005 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:42:58,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 21:42:58,005 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:42:58,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:42:58,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1356234869, now seen corresponding path program 1 times [2021-11-02 21:42:58,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:42:58,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989858802] [2021-11-02 21:42:58,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:42:58,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:42:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:42:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:42:58,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:42:58,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989858802] [2021-11-02 21:42:58,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989858802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:42:58,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:42:58,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:42:58,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163325646] [2021-11-02 21:42:58,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:42:58,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:42:58,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:42:58,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:42:58,215 INFO L87 Difference]: Start difference. First operand 7147 states and 9515 transitions. Second operand has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:00,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:43:12,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:43:12,315 INFO L93 Difference]: Finished difference Result 19837 states and 26539 transitions. [2021-11-02 21:43:12,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:43:12,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 0 states have call successors, (0), 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 261 [2021-11-02 21:43:12,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:43:12,335 INFO L225 Difference]: With dead ends: 19837 [2021-11-02 21:43:12,335 INFO L226 Difference]: Without dead ends: 12928 [2021-11-02 21:43:12,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.33ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 21:43:12,349 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6014 mSDsluCounter, 7437 mSDsCounter, 0 mSdLazyCounter, 9947 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11675.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6014 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9947 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12898.09ms IncrementalHoareTripleChecker+Time [2021-11-02 21:43:12,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6014 Valid, 0 Invalid, 9950 Unknown, 0 Unchecked, 25.97ms Time], IncrementalHoareTripleChecker [2 Valid, 9947 Invalid, 1 Unknown, 0 Unchecked, 12898.09ms Time] [2021-11-02 21:43:12,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12928 states. [2021-11-02 21:43:12,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12928 to 7165. [2021-11-02 21:43:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7165 states, 7155 states have (on average 1.3323549965059398) internal successors, (9533), 7164 states have internal predecessors, (9533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7165 states to 7165 states and 9533 transitions. [2021-11-02 21:43:12,871 INFO L78 Accepts]: Start accepts. Automaton has 7165 states and 9533 transitions. Word has length 261 [2021-11-02 21:43:12,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:43:12,871 INFO L470 AbstractCegarLoop]: Abstraction has 7165 states and 9533 transitions. [2021-11-02 21:43:12,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:12,872 INFO L276 IsEmpty]: Start isEmpty. Operand 7165 states and 9533 transitions. [2021-11-02 21:43:12,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-02 21:43:12,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:43:12,876 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:43:12,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 21:43:12,876 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:43:12,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:43:12,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2083262556, now seen corresponding path program 1 times [2021-11-02 21:43:12,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:43:12,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966224062] [2021-11-02 21:43:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:43:12,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:43:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:43:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:43:13,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:43:13,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966224062] [2021-11-02 21:43:13,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966224062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:43:13,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:43:13,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:43:13,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442934533] [2021-11-02 21:43:13,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:43:13,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:43:13,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:43:13,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:43:13,069 INFO L87 Difference]: Start difference. First operand 7165 states and 9533 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:15,094 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 [] [2021-11-02 21:43:19,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:43:19,119 INFO L93 Difference]: Finished difference Result 14098 states and 18784 transitions. [2021-11-02 21:43:19,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:43:19,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 263 [2021-11-02 21:43:19,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:43:19,132 INFO L225 Difference]: With dead ends: 14098 [2021-11-02 21:43:19,132 INFO L226 Difference]: Without dead ends: 7171 [2021-11-02 21:43:19,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:43:19,143 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 2981 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5022.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2981 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5515.91ms IncrementalHoareTripleChecker+Time [2021-11-02 21:43:19,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2982 Unknown, 0 Unchecked, 5.40ms Time], IncrementalHoareTripleChecker [0 Valid, 2981 Invalid, 1 Unknown, 0 Unchecked, 5515.91ms Time] [2021-11-02 21:43:19,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7171 states. [2021-11-02 21:43:19,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7171 to 7171. [2021-11-02 21:43:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7171 states, 7161 states have (on average 1.3320765256249127) internal successors, (9539), 7170 states have internal predecessors, (9539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:19,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7171 states to 7171 states and 9539 transitions. [2021-11-02 21:43:19,681 INFO L78 Accepts]: Start accepts. Automaton has 7171 states and 9539 transitions. Word has length 263 [2021-11-02 21:43:19,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:43:19,681 INFO L470 AbstractCegarLoop]: Abstraction has 7171 states and 9539 transitions. [2021-11-02 21:43:19,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:19,682 INFO L276 IsEmpty]: Start isEmpty. Operand 7171 states and 9539 transitions. [2021-11-02 21:43:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-02 21:43:19,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:43:19,685 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:43:19,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 21:43:19,686 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:43:19,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:43:19,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2067743838, now seen corresponding path program 1 times [2021-11-02 21:43:19,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:43:19,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003637711] [2021-11-02 21:43:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:43:19,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:43:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:43:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:43:20,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:43:20,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003637711] [2021-11-02 21:43:20,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003637711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:43:20,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:43:20,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 21:43:20,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667268140] [2021-11-02 21:43:20,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 21:43:20,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:43:20,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 21:43:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 21:43:20,198 INFO L87 Difference]: Start difference. First operand 7171 states and 9539 transitions. Second operand has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:22,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:43:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:43:41,856 INFO L93 Difference]: Finished difference Result 27871 states and 37373 transitions. [2021-11-02 21:43:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 21:43:41,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 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 263 [2021-11-02 21:43:41,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:43:41,889 INFO L225 Difference]: With dead ends: 27871 [2021-11-02 21:43:41,889 INFO L226 Difference]: Without dead ends: 20938 [2021-11-02 21:43:41,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 166.45ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-02 21:43:41,903 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10297 mSDsluCounter, 13949 mSDsCounter, 0 mSdLazyCounter, 17379 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17593.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10297 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.73ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 17379 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19444.95ms IncrementalHoareTripleChecker+Time [2021-11-02 21:43:41,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10297 Valid, 0 Invalid, 17407 Unknown, 0 Unchecked, 55.73ms Time], IncrementalHoareTripleChecker [27 Valid, 17379 Invalid, 1 Unknown, 0 Unchecked, 19444.95ms Time] [2021-11-02 21:43:41,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20938 states. [2021-11-02 21:43:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20938 to 7201. [2021-11-02 21:43:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7201 states, 7191 states have (on average 1.330691141704909) internal successors, (9569), 7200 states have internal predecessors, (9569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7201 states to 7201 states and 9569 transitions. [2021-11-02 21:43:42,562 INFO L78 Accepts]: Start accepts. Automaton has 7201 states and 9569 transitions. Word has length 263 [2021-11-02 21:43:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:43:42,563 INFO L470 AbstractCegarLoop]: Abstraction has 7201 states and 9569 transitions. [2021-11-02 21:43:42,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 7201 states and 9569 transitions. [2021-11-02 21:43:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-02 21:43:42,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:43:42,567 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:43:42,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 21:43:42,568 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:43:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:43:42,568 INFO L85 PathProgramCache]: Analyzing trace with hash 84011610, now seen corresponding path program 1 times [2021-11-02 21:43:42,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:43:42,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101824151] [2021-11-02 21:43:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:43:42,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:43:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:43:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:43:42,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:43:42,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101824151] [2021-11-02 21:43:42,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101824151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:43:42,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:43:42,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 21:43:42,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160334348] [2021-11-02 21:43:42,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 21:43:42,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:43:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 21:43:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 21:43:42,912 INFO L87 Difference]: Start difference. First operand 7201 states and 9569 transitions. Second operand has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:44,939 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 [] [2021-11-02 21:43:59,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:43:59,016 INFO L93 Difference]: Finished difference Result 24261 states and 32425 transitions. [2021-11-02 21:43:59,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 21:43:59,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 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 265 [2021-11-02 21:43:59,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:43:59,035 INFO L225 Difference]: With dead ends: 24261 [2021-11-02 21:43:59,035 INFO L226 Difference]: Without dead ends: 17298 [2021-11-02 21:43:59,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.05ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 21:43:59,042 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6352 mSDsluCounter, 8839 mSDsCounter, 0 mSdLazyCounter, 11206 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12884.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6352 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.52ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11206 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14227.44ms IncrementalHoareTripleChecker+Time [2021-11-02 21:43:59,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6352 Valid, 0 Invalid, 11237 Unknown, 0 Unchecked, 37.52ms Time], IncrementalHoareTripleChecker [30 Valid, 11206 Invalid, 1 Unknown, 0 Unchecked, 14227.44ms Time] [2021-11-02 21:43:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17298 states. [2021-11-02 21:43:59,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17298 to 7225. [2021-11-02 21:43:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7225 states, 7215 states have (on average 1.3295911295911296) internal successors, (9593), 7224 states have internal predecessors, (9593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7225 states to 7225 states and 9593 transitions. [2021-11-02 21:43:59,595 INFO L78 Accepts]: Start accepts. Automaton has 7225 states and 9593 transitions. Word has length 265 [2021-11-02 21:43:59,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:43:59,595 INFO L470 AbstractCegarLoop]: Abstraction has 7225 states and 9593 transitions. [2021-11-02 21:43:59,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:59,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7225 states and 9593 transitions. [2021-11-02 21:43:59,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-02 21:43:59,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:43:59,599 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:43:59,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 21:43:59,599 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:43:59,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:43:59,599 INFO L85 PathProgramCache]: Analyzing trace with hash -28746754, now seen corresponding path program 1 times [2021-11-02 21:43:59,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:43:59,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416701181] [2021-11-02 21:43:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:43:59,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:43:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:43:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:43:59,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:43:59,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416701181] [2021-11-02 21:43:59,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416701181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:43:59,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:43:59,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 21:43:59,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239165185] [2021-11-02 21:43:59,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 21:43:59,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:43:59,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 21:43:59,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 21:43:59,889 INFO L87 Difference]: Start difference. First operand 7225 states and 9593 transitions. Second operand has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:44:01,913 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 [] [2021-11-02 21:44:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:44:14,057 INFO L93 Difference]: Finished difference Result 22448 states and 29948 transitions. [2021-11-02 21:44:14,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:44:14,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 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 267 [2021-11-02 21:44:14,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:44:14,079 INFO L225 Difference]: With dead ends: 22448 [2021-11-02 21:44:14,079 INFO L226 Difference]: Without dead ends: 15461 [2021-11-02 21:44:14,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.39ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 21:44:14,090 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4759 mSDsluCounter, 8082 mSDsCounter, 0 mSdLazyCounter, 10449 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11374.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.42ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 10449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12526.15ms IncrementalHoareTripleChecker+Time [2021-11-02 21:44:14,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 0 Invalid, 10477 Unknown, 0 Unchecked, 29.42ms Time], IncrementalHoareTripleChecker [27 Valid, 10449 Invalid, 1 Unknown, 0 Unchecked, 12526.15ms Time] [2021-11-02 21:44:14,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15461 states. [2021-11-02 21:44:14,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15461 to 7249. [2021-11-02 21:44:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7249 states, 7239 states have (on average 1.3284984113827876) internal successors, (9617), 7248 states have internal predecessors, (9617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:44:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7249 states to 7249 states and 9617 transitions. [2021-11-02 21:44:14,756 INFO L78 Accepts]: Start accepts. Automaton has 7249 states and 9617 transitions. Word has length 267 [2021-11-02 21:44:14,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:44:14,756 INFO L470 AbstractCegarLoop]: Abstraction has 7249 states and 9617 transitions. [2021-11-02 21:44:14,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:44:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 7249 states and 9617 transitions. [2021-11-02 21:44:14,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-02 21:44:14,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:44:14,760 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:44:14,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-02 21:44:14,760 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:44:14,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:44:14,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1180079494, now seen corresponding path program 1 times [2021-11-02 21:44:14,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:44:14,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236001491] [2021-11-02 21:44:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:44:14,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:44:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:44:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:44:15,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:44:15,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236001491] [2021-11-02 21:44:15,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236001491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:44:15,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:44:15,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:44:15,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759621237] [2021-11-02 21:44:15,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:44:15,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:44:15,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:44:15,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:44:15,078 INFO L87 Difference]: Start difference. First operand 7249 states and 9617 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:44:17,104 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 [] [2021-11-02 21:44:33,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:44:33,943 INFO L93 Difference]: Finished difference Result 34183 states and 45541 transitions. [2021-11-02 21:44:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:44:33,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2021-11-02 21:44:33,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:44:33,984 INFO L225 Difference]: With dead ends: 34183 [2021-11-02 21:44:33,985 INFO L226 Difference]: Without dead ends: 27172 [2021-11-02 21:44:33,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.19ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 21:44:33,999 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4455 mSDsluCounter, 7908 mSDsCounter, 0 mSdLazyCounter, 11263 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14366.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4455 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.76ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 11263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16043.62ms IncrementalHoareTripleChecker+Time [2021-11-02 21:44:33,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4455 Valid, 0 Invalid, 11281 Unknown, 0 Unchecked, 38.76ms Time], IncrementalHoareTripleChecker [17 Valid, 11263 Invalid, 1 Unknown, 0 Unchecked, 16043.62ms Time] [2021-11-02 21:44:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27172 states. [2021-11-02 21:44:34,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27172 to 7267. [2021-11-02 21:44:34,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7267 states, 7257 states have (on average 1.3276836158192091) internal successors, (9635), 7266 states have internal predecessors, (9635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:44:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7267 states to 7267 states and 9635 transitions. [2021-11-02 21:44:34,770 INFO L78 Accepts]: Start accepts. Automaton has 7267 states and 9635 transitions. Word has length 269 [2021-11-02 21:44:34,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:44:34,771 INFO L470 AbstractCegarLoop]: Abstraction has 7267 states and 9635 transitions. [2021-11-02 21:44:34,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:44:34,771 INFO L276 IsEmpty]: Start isEmpty. Operand 7267 states and 9635 transitions. [2021-11-02 21:44:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-02 21:44:34,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:44:34,774 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:44:34,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 21:44:34,775 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:44:34,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:44:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash 656739614, now seen corresponding path program 1 times [2021-11-02 21:44:34,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:44:34,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730722015] [2021-11-02 21:44:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:44:34,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:44:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:44:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:44:35,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:44:35,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730722015] [2021-11-02 21:44:35,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730722015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:44:35,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:44:35,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:44:35,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062564066] [2021-11-02 21:44:35,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:44:35,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:44:35,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:44:35,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:44:35,066 INFO L87 Difference]: Start difference. First operand 7267 states and 9635 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:44:37,091 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 [] [2021-11-02 21:44:53,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:44:53,134 INFO L93 Difference]: Finished difference Result 34201 states and 45553 transitions. [2021-11-02 21:44:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:44:53,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2021-11-02 21:44:53,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:44:53,183 INFO L225 Difference]: With dead ends: 34201 [2021-11-02 21:44:53,183 INFO L226 Difference]: Without dead ends: 27172 [2021-11-02 21:44:53,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.34ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 21:44:53,198 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4455 mSDsluCounter, 7908 mSDsCounter, 0 mSdLazyCounter, 11263 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13719.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4455 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.76ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 11263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15092.84ms IncrementalHoareTripleChecker+Time [2021-11-02 21:44:53,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4455 Valid, 0 Invalid, 11281 Unknown, 0 Unchecked, 31.76ms Time], IncrementalHoareTripleChecker [17 Valid, 11263 Invalid, 1 Unknown, 0 Unchecked, 15092.84ms Time] [2021-11-02 21:44:53,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27172 states. [2021-11-02 21:44:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27172 to 7285. [2021-11-02 21:44:54,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7285 states, 7275 states have (on average 1.326872852233677) internal successors, (9653), 7284 states have internal predecessors, (9653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:44:54,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7285 states to 7285 states and 9653 transitions. [2021-11-02 21:44:54,051 INFO L78 Accepts]: Start accepts. Automaton has 7285 states and 9653 transitions. Word has length 271 [2021-11-02 21:44:54,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:44:54,052 INFO L470 AbstractCegarLoop]: Abstraction has 7285 states and 9653 transitions. [2021-11-02 21:44:54,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:44:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7285 states and 9653 transitions. [2021-11-02 21:44:54,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-02 21:44:54,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:44:54,056 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:44:54,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-02 21:44:54,056 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:44:54,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:44:54,056 INFO L85 PathProgramCache]: Analyzing trace with hash 350387746, now seen corresponding path program 1 times [2021-11-02 21:44:54,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:44:54,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250742560] [2021-11-02 21:44:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:44:54,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:44:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:44:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:44:54,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:44:54,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250742560] [2021-11-02 21:44:54,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250742560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:44:54,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:44:54,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 21:44:54,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820812455] [2021-11-02 21:44:54,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 21:44:54,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:44:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 21:44:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:44:54,351 INFO L87 Difference]: Start difference. First operand 7285 states and 9653 transitions. Second operand has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:44:56,376 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 [] [2021-11-02 21:45:11,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:45:11,533 INFO L93 Difference]: Finished difference Result 24989 states and 33253 transitions. [2021-11-02 21:45:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:45:11,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 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 273 [2021-11-02 21:45:11,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:45:11,556 INFO L225 Difference]: With dead ends: 24989 [2021-11-02 21:45:11,556 INFO L226 Difference]: Without dead ends: 17942 [2021-11-02 21:45:11,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.78ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 21:45:11,570 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3407 mSDsluCounter, 7947 mSDsCounter, 0 mSdLazyCounter, 11322 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13448.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3407 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.91ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 11322 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14820.61ms IncrementalHoareTripleChecker+Time [2021-11-02 21:45:11,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3407 Valid, 0 Invalid, 11337 Unknown, 0 Unchecked, 31.91ms Time], IncrementalHoareTripleChecker [14 Valid, 11322 Invalid, 1 Unknown, 0 Unchecked, 14820.61ms Time] [2021-11-02 21:45:11,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17942 states. [2021-11-02 21:45:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17942 to 7303. [2021-11-02 21:45:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7303 states, 7293 states have (on average 1.326066090771973) internal successors, (9671), 7302 states have internal predecessors, (9671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:45:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 9671 transitions. [2021-11-02 21:45:12,391 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 9671 transitions. Word has length 273 [2021-11-02 21:45:12,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:45:12,391 INFO L470 AbstractCegarLoop]: Abstraction has 7303 states and 9671 transitions. [2021-11-02 21:45:12,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:45:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 9671 transitions. [2021-11-02 21:45:12,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-02 21:45:12,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:45:12,395 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:45:12,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 21:45:12,396 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:45:12,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:45:12,396 INFO L85 PathProgramCache]: Analyzing trace with hash -243116666, now seen corresponding path program 1 times [2021-11-02 21:45:12,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:45:12,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115849274] [2021-11-02 21:45:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:45:12,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:45:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:45:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:45:12,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:45:12,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115849274] [2021-11-02 21:45:12,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115849274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:45:12,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:45:12,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 21:45:12,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47686463] [2021-11-02 21:45:12,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 21:45:12,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:45:12,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 21:45:12,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 21:45:12,738 INFO L87 Difference]: Start difference. First operand 7303 states and 9671 transitions. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:45:14,765 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 [] [2021-11-02 21:45:27,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:45:27,503 INFO L93 Difference]: Finished difference Result 22526 states and 30002 transitions. [2021-11-02 21:45:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:45:27,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 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 275 [2021-11-02 21:45:27,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:45:27,530 INFO L225 Difference]: With dead ends: 22526 [2021-11-02 21:45:27,530 INFO L226 Difference]: Without dead ends: 15461 [2021-11-02 21:45:27,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.67ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 21:45:27,541 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4759 mSDsluCounter, 8082 mSDsCounter, 0 mSdLazyCounter, 10449 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11578.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.53ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 10449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12701.47ms IncrementalHoareTripleChecker+Time [2021-11-02 21:45:27,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 0 Invalid, 10477 Unknown, 0 Unchecked, 28.53ms Time], IncrementalHoareTripleChecker [27 Valid, 10449 Invalid, 1 Unknown, 0 Unchecked, 12701.47ms Time] [2021-11-02 21:45:27,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15461 states. [2021-11-02 21:45:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15461 to 7327. [2021-11-02 21:45:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7327 states, 7317 states have (on average 1.3249965832991664) internal successors, (9695), 7326 states have internal predecessors, (9695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:45:28,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7327 states to 7327 states and 9695 transitions. [2021-11-02 21:45:28,404 INFO L78 Accepts]: Start accepts. Automaton has 7327 states and 9695 transitions. Word has length 275 [2021-11-02 21:45:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:45:28,404 INFO L470 AbstractCegarLoop]: Abstraction has 7327 states and 9695 transitions. [2021-11-02 21:45:28,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:45:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 7327 states and 9695 transitions. [2021-11-02 21:45:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-02 21:45:28,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:45:28,408 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:45:28,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-02 21:45:28,409 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:45:28,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:45:28,409 INFO L85 PathProgramCache]: Analyzing trace with hash -21550262, now seen corresponding path program 1 times [2021-11-02 21:45:28,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:45:28,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39312846] [2021-11-02 21:45:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:45:28,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:45:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:45:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:45:28,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:45:28,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39312846] [2021-11-02 21:45:28,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39312846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:45:28,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:45:28,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 21:45:28,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464688603] [2021-11-02 21:45:28,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 21:45:28,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:45:28,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 21:45:28,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 21:45:28,727 INFO L87 Difference]: Start difference. First operand 7327 states and 9695 transitions. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:45:30,752 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 [] [2021-11-02 21:45:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:45:43,935 INFO L93 Difference]: Finished difference Result 22550 states and 30020 transitions. [2021-11-02 21:45:43,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:45:43,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 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 277 [2021-11-02 21:45:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:45:43,958 INFO L225 Difference]: With dead ends: 22550 [2021-11-02 21:45:43,958 INFO L226 Difference]: Without dead ends: 15461 [2021-11-02 21:45:43,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.68ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 21:45:43,968 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4759 mSDsluCounter, 8082 mSDsCounter, 0 mSdLazyCounter, 10449 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11751.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.70ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 10449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13050.34ms IncrementalHoareTripleChecker+Time [2021-11-02 21:45:43,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 0 Invalid, 10477 Unknown, 0 Unchecked, 27.70ms Time], IncrementalHoareTripleChecker [27 Valid, 10449 Invalid, 1 Unknown, 0 Unchecked, 13050.34ms Time] [2021-11-02 21:45:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15461 states. [2021-11-02 21:45:44,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15461 to 7351. [2021-11-02 21:45:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7351 states, 7341 states have (on average 1.323934068927939) internal successors, (9719), 7350 states have internal predecessors, (9719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:45:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 9719 transitions. [2021-11-02 21:45:44,846 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 9719 transitions. Word has length 277 [2021-11-02 21:45:44,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:45:44,846 INFO L470 AbstractCegarLoop]: Abstraction has 7351 states and 9719 transitions. [2021-11-02 21:45:44,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:45:44,846 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 9719 transitions. [2021-11-02 21:45:44,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-02 21:45:44,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:45:44,851 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:45:44,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-02 21:45:44,851 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:45:44,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:45:44,852 INFO L85 PathProgramCache]: Analyzing trace with hash 45746150, now seen corresponding path program 1 times [2021-11-02 21:45:44,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:45:44,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856273804] [2021-11-02 21:45:44,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:45:44,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:45:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:45:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-02 21:45:45,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:45:45,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856273804] [2021-11-02 21:45:45,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856273804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:45:45,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:45:45,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 21:45:45,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122590484] [2021-11-02 21:45:45,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 21:45:45,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:45:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 21:45:45,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 21:45:45,221 INFO L87 Difference]: Start difference. First operand 7351 states and 9719 transitions. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:45:47,245 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 [] [2021-11-02 21:45:59,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:45:59,996 INFO L93 Difference]: Finished difference Result 22310 states and 29732 transitions. [2021-11-02 21:45:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 21:45:59,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 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 279 [2021-11-02 21:45:59,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:46:00,019 INFO L225 Difference]: With dead ends: 22310 [2021-11-02 21:46:00,020 INFO L226 Difference]: Without dead ends: 15197 [2021-11-02 21:46:00,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.32ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 21:46:00,029 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4663 mSDsluCounter, 8390 mSDsCounter, 0 mSdLazyCounter, 11065 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11507.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.10ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 11065 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12660.28ms IncrementalHoareTripleChecker+Time [2021-11-02 21:46:00,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4663 Valid, 0 Invalid, 11093 Unknown, 0 Unchecked, 22.10ms Time], IncrementalHoareTripleChecker [27 Valid, 11065 Invalid, 1 Unknown, 0 Unchecked, 12660.28ms Time] [2021-11-02 21:46:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15197 states. [2021-11-02 21:46:00,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15197 to 7375. [2021-11-02 21:46:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7375 states, 7365 states have (on average 1.3228784792939579) internal successors, (9743), 7374 states have internal predecessors, (9743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:46:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7375 states to 7375 states and 9743 transitions. [2021-11-02 21:46:00,939 INFO L78 Accepts]: Start accepts. Automaton has 7375 states and 9743 transitions. Word has length 279 [2021-11-02 21:46:00,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:46:00,939 INFO L470 AbstractCegarLoop]: Abstraction has 7375 states and 9743 transitions. [2021-11-02 21:46:00,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:46:00,939 INFO L276 IsEmpty]: Start isEmpty. Operand 7375 states and 9743 transitions. [2021-11-02 21:46:00,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-02 21:46:00,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:46:00,943 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:46:00,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 21:46:00,943 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 35 more)] === [2021-11-02 21:46:00,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:46:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1032831318, now seen corresponding path program 1 times [2021-11-02 21:46:00,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:46:00,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893851679] [2021-11-02 21:46:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:46:00,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:46:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:46:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-02 21:46:17,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:46:17,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893851679] [2021-11-02 21:46:17,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893851679] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 21:46:17,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956274565] [2021-11-02 21:46:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:46:17,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 21:46:17,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:46:17,301 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 21:46:17,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 21:52:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:52:47,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 4268 conjuncts, 432 conjunts are in the unsatisfiable core [2021-11-02 21:52:47,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... Killed by 15