./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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.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 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 06:17:54,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 06:17:54,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 06:17:54,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 06:17:54,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 06:17:54,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 06:17:54,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 06:17:54,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 06:17:54,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 06:17:54,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 06:17:54,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 06:17:54,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 06:17:54,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 06:17:54,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 06:17:54,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 06:17:54,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 06:17:54,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 06:17:54,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 06:17:54,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 06:17:54,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 06:17:54,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 06:17:54,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 06:17:54,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 06:17:54,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 06:17:54,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 06:17:54,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 06:17:54,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 06:17:54,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 06:17:54,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 06:17:54,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 06:17:54,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 06:17:54,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 06:17:54,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 06:17:54,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 06:17:54,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 06:17:54,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 06:17:54,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 06:17:54,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 06:17:54,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 06:17:54,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 06:17:54,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 06:17:54,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 06:17:54,264 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 06:17:54,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 06:17:54,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 06:17:54,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 06:17:54,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 06:17:54,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 06:17:54,266 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 06:17:54,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 06:17:54,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 06:17:54,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 06:17:54,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 06:17:54,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 06:17:54,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 06:17:54,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 06:17:54,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 06:17:54,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 06:17:54,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 06:17:54,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 06:17:54,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 06:17:54,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:17:54,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 06:17:54,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 06:17:54,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 06:17:54,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 06:17:54,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 06:17:54,270 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 06:17:54,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 06:17:54,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 06:17:54,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 06:17:54,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2021-11-04 06:17:54,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 06:17:54,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 06:17:54,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 06:17:54,484 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 06:17:54,485 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 06:17:54,486 INFO L432 ainManager$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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-04 06:17:54,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02faf9225/6b42ab3ab7344c7894a466e7d663cd59/FLAGe693cc783 [2021-11-04 06:17:55,183 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 06:17:55,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-04 06:17:55,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02faf9225/6b42ab3ab7344c7894a466e7d663cd59/FLAGe693cc783 [2021-11-04 06:17:55,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02faf9225/6b42ab3ab7344c7894a466e7d663cd59 [2021-11-04 06:17:55,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 06:17:55,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 06:17:55,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 06:17:55,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 06:17:55,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 06:17:55,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:17:55" (1/1) ... [2021-11-04 06:17:55,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b594d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:55, skipping insertion in model container [2021-11-04 06:17:55,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:17:55" (1/1) ... [2021-11-04 06:17:55,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 06:17:55,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 06:17:56,785 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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2021-11-04 06:17:56,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:17:56,888 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 06:17:57,166 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-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2021-11-04 06:17:57,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 06:17:57,268 INFO L208 MainTranslator]: Completed translation [2021-11-04 06:17:57,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:57 WrapperNode [2021-11-04 06:17:57,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 06:17:57,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 06:17:57,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 06:17:57,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 06:17:57,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:57" (1/1) ... [2021-11-04 06:17:57,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:57" (1/1) ... [2021-11-04 06:17:57,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 06:17:57,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 06:17:57,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 06:17:57,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 06:17:57,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:57" (1/1) ... [2021-11-04 06:17:57,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:57" (1/1) ... [2021-11-04 06:17:57,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:57" (1/1) ... [2021-11-04 06:17:57,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:57" (1/1) ... [2021-11-04 06:17:58,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:57" (1/1) ... [2021-11-04 06:17:58,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:57" (1/1) ... [2021-11-04 06:17:58,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:57" (1/1) ... [2021-11-04 06:17:58,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 06:17:58,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 06:17:58,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 06:17:58,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 06:17:58,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:57" (1/1) ... [2021-11-04 06:17:58,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 06:17:58,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:17:58,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 06:17:58,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 06:17:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 06:17:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 06:17:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 06:17:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 06:17:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 06:17:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 06:17:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 06:17:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 06:17:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 06:17:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 06:17:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 06:17:58,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 06:18:11,302 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 06:18:11,302 INFO L299 CfgBuilder]: Removed 1850 assume(true) statements. [2021-11-04 06:18:11,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:18:11 BoogieIcfgContainer [2021-11-04 06:18:11,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 06:18:11,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 06:18:11,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 06:18:11,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 06:18:11,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 06:17:55" (1/3) ... [2021-11-04 06:18:11,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b34d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:18:11, skipping insertion in model container [2021-11-04 06:18:11,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:17:57" (2/3) ... [2021-11-04 06:18:11,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b34d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:18:11, skipping insertion in model container [2021-11-04 06:18:11,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:18:11" (3/3) ... [2021-11-04 06:18:11,314 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2021-11-04 06:18:11,321 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 06:18:11,321 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2021-11-04 06:18:11,373 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 06:18:11,379 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 06:18:11,379 INFO L340 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2021-11-04 06:18:11,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 1939 states, 1885 states have (on average 1.4482758620689655) internal successors, (2730), 1938 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:18:11,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-04 06:18:11,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:18:11,439 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] [2021-11-04 06:18:11,439 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 06:18:11,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:18:11,444 INFO L85 PathProgramCache]: Analyzing trace with hash 515534990, now seen corresponding path program 1 times [2021-11-04 06:18:11,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:18:11,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173860960] [2021-11-04 06:18:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:18:11,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:18:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:18:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:18:12,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:18:12,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173860960] [2021-11-04 06:18:12,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173860960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:18:12,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:18:12,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:18:12,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797301909] [2021-11-04 06:18:12,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:18:12,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 06:18:12,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:18:12,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 06:18:12,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 06:18:12,128 INFO L87 Difference]: Start difference. First operand has 1939 states, 1885 states have (on average 1.4482758620689655) internal successors, (2730), 1938 states have internal predecessors, (2730), 0 states have call successors, (0), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:18:14,284 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 [] [2021-11-04 06:18:30,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:18:30,512 INFO L93 Difference]: Finished difference Result 3874 states and 5455 transitions. [2021-11-04 06:18:30,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 06:18:30,514 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-04 06:18:30,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:18:30,531 INFO L225 Difference]: With dead ends: 3874 [2021-11-04 06:18:30,531 INFO L226 Difference]: Without dead ends: 1915 [2021-11-04 06:18:30,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 06:18:30,543 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16472.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17980.95ms IncrementalHoareTripleChecker+Time [2021-11-04 06:18:30,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 2598 Unknown, 0 Unchecked, 29.24ms Time], IncrementalHoareTripleChecker [0 Valid, 2597 Invalid, 1 Unknown, 0 Unchecked, 17980.95ms Time] [2021-11-04 06:18:30,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2021-11-04 06:18:30,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1915. [2021-11-04 06:18:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1862 states have (on average 1.3823845327604727) internal successors, (2574), 1914 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:18:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2574 transitions. [2021-11-04 06:18:30,637 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2574 transitions. Word has length 34 [2021-11-04 06:18:30,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:18:30,637 INFO L470 AbstractCegarLoop]: Abstraction has 1915 states and 2574 transitions. [2021-11-04 06:18:30,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:18:30,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2574 transitions. [2021-11-04 06:18:30,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-04 06:18:30,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:18:30,643 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] [2021-11-04 06:18:30,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 06:18:30,643 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 06:18:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:18:30,644 INFO L85 PathProgramCache]: Analyzing trace with hash -354019178, now seen corresponding path program 1 times [2021-11-04 06:18:30,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:18:30,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358438307] [2021-11-04 06:18:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:18:30,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:18:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:18:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:18:31,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:18:31,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358438307] [2021-11-04 06:18:31,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358438307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:18:31,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:18:31,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:18:31,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590903569] [2021-11-04 06:18:31,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:18:31,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:18:31,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:18:31,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:18:31,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:18:31,086 INFO L87 Difference]: Start difference. First operand 1915 states and 2574 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:18:33,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:19:05,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:19:05,781 INFO L93 Difference]: Finished difference Result 5671 states and 7645 transitions. [2021-11-04 06:19:05,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:19:05,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-04 06:19:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:19:05,798 INFO L225 Difference]: With dead ends: 5671 [2021-11-04 06:19:05,798 INFO L226 Difference]: Without dead ends: 3776 [2021-11-04 06:19:05,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.05ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:19:05,803 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2512 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 5135 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31816.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.68ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5135 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34173.56ms IncrementalHoareTripleChecker+Time [2021-11-04 06:19:05,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2512 Valid, 0 Invalid, 5139 Unknown, 0 Unchecked, 52.68ms Time], IncrementalHoareTripleChecker [3 Valid, 5135 Invalid, 1 Unknown, 0 Unchecked, 34173.56ms Time] [2021-11-04 06:19:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-11-04 06:19:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3672. [2021-11-04 06:19:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3619 states have (on average 1.3915446255871788) internal successors, (5036), 3671 states have internal predecessors, (5036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:19:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 5036 transitions. [2021-11-04 06:19:05,898 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 5036 transitions. Word has length 34 [2021-11-04 06:19:05,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:19:05,899 INFO L470 AbstractCegarLoop]: Abstraction has 3672 states and 5036 transitions. [2021-11-04 06:19:05,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:19:05,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 5036 transitions. [2021-11-04 06:19:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-04 06:19:05,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:19:05,901 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] [2021-11-04 06:19:05,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 06:19:05,901 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 06:19:05,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:19:05,902 INFO L85 PathProgramCache]: Analyzing trace with hash -199593292, now seen corresponding path program 1 times [2021-11-04 06:19:05,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:19:05,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311787891] [2021-11-04 06:19:05,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:19:05,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:19:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:19:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:19:06,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:19:06,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311787891] [2021-11-04 06:19:06,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311787891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:19:06,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:19:06,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 06:19:06,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055772389] [2021-11-04 06:19:06,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:19:06,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:19:06,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:19:06,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:19:06,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:19:06,382 INFO L87 Difference]: Start difference. First operand 3672 states and 5036 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:19:08,494 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 [] [2021-11-04 06:19:43,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:19:43,094 INFO L93 Difference]: Finished difference Result 10870 states and 14963 transitions. [2021-11-04 06:19:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:19:43,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-04 06:19:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:19:43,125 INFO L225 Difference]: With dead ends: 10870 [2021-11-04 06:19:43,126 INFO L226 Difference]: Without dead ends: 7216 [2021-11-04 06:19:43,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:19:43,133 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2378 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 5127 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33394.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.85ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 5127 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36201.56ms IncrementalHoareTripleChecker+Time [2021-11-04 06:19:43,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2378 Valid, 0 Invalid, 5180 Unknown, 0 Unchecked, 38.85ms Time], IncrementalHoareTripleChecker [52 Valid, 5127 Invalid, 1 Unknown, 0 Unchecked, 36201.56ms Time] [2021-11-04 06:19:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2021-11-04 06:19:43,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 7060. [2021-11-04 06:19:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7060 states, 7007 states have (on average 1.3891822463251036) internal successors, (9734), 7059 states have internal predecessors, (9734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:19:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7060 states to 7060 states and 9734 transitions. [2021-11-04 06:19:43,273 INFO L78 Accepts]: Start accepts. Automaton has 7060 states and 9734 transitions. Word has length 40 [2021-11-04 06:19:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:19:43,273 INFO L470 AbstractCegarLoop]: Abstraction has 7060 states and 9734 transitions. [2021-11-04 06:19:43,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:19:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 7060 states and 9734 transitions. [2021-11-04 06:19:43,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-04 06:19:43,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:19:43,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:19:43,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 06:19:43,276 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 06:19:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:19:43,277 INFO L85 PathProgramCache]: Analyzing trace with hash -518682485, now seen corresponding path program 1 times [2021-11-04 06:19:43,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:19:43,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929382198] [2021-11-04 06:19:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:19:43,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:19:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:19:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:19:43,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:19:43,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929382198] [2021-11-04 06:19:43,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929382198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:19:43,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:19:43,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:19:43,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763445863] [2021-11-04 06:19:43,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:19:43,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:19:43,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:19:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:19:43,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:19:43,590 INFO L87 Difference]: Start difference. First operand 7060 states and 9734 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:19:45,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:20:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:20:20,191 INFO L93 Difference]: Finished difference Result 20449 states and 28105 transitions. [2021-11-04 06:20:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:20:20,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-04 06:20:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:20:20,231 INFO L225 Difference]: With dead ends: 20449 [2021-11-04 06:20:20,231 INFO L226 Difference]: Without dead ends: 13409 [2021-11-04 06:20:20,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:20:20,245 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2277 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 5148 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33101.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.01ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5148 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36059.76ms IncrementalHoareTripleChecker+Time [2021-11-04 06:20:20,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2277 Valid, 0 Invalid, 5150 Unknown, 0 Unchecked, 33.01ms Time], IncrementalHoareTripleChecker [1 Valid, 5148 Invalid, 1 Unknown, 0 Unchecked, 36059.76ms Time] [2021-11-04 06:20:20,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13409 states. [2021-11-04 06:20:20,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13409 to 13216. [2021-11-04 06:20:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13216 states, 13163 states have (on average 1.3860062295829219) internal successors, (18244), 13215 states have internal predecessors, (18244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:20:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13216 states to 13216 states and 18244 transitions. [2021-11-04 06:20:20,504 INFO L78 Accepts]: Start accepts. Automaton has 13216 states and 18244 transitions. Word has length 50 [2021-11-04 06:20:20,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:20:20,505 INFO L470 AbstractCegarLoop]: Abstraction has 13216 states and 18244 transitions. [2021-11-04 06:20:20,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:20:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 13216 states and 18244 transitions. [2021-11-04 06:20:20,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-04 06:20:20,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:20:20,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:20:20,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 06:20:20,509 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 06:20:20,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:20:20,509 INFO L85 PathProgramCache]: Analyzing trace with hash -320551080, now seen corresponding path program 1 times [2021-11-04 06:20:20,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:20:20,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399270005] [2021-11-04 06:20:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:20:20,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:20:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:20:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:20:20,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:20:20,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399270005] [2021-11-04 06:20:20,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399270005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:20:20,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:20:20,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:20:20,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574293040] [2021-11-04 06:20:20,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:20:20,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:20:20,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:20:20,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:20:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:20:20,949 INFO L87 Difference]: Start difference. First operand 13216 states and 18244 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:20:23,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:20:59,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:20:59,902 INFO L93 Difference]: Finished difference Result 38231 states and 52583 transitions. [2021-11-04 06:20:59,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:20:59,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-04 06:20:59,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:20:59,963 INFO L225 Difference]: With dead ends: 38231 [2021-11-04 06:20:59,964 INFO L226 Difference]: Without dead ends: 25035 [2021-11-04 06:20:59,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:20:59,988 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2260 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 5412 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35118.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.55ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38346.11ms IncrementalHoareTripleChecker+Time [2021-11-04 06:20:59,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2260 Valid, 0 Invalid, 5414 Unknown, 0 Unchecked, 27.55ms Time], IncrementalHoareTripleChecker [1 Valid, 5412 Invalid, 1 Unknown, 0 Unchecked, 38346.11ms Time] [2021-11-04 06:21:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25035 states. [2021-11-04 06:21:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25035 to 24852. [2021-11-04 06:21:00,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24852 states, 24799 states have (on average 1.37981370216541) internal successors, (34218), 24851 states have internal predecessors, (34218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:21:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24852 states to 24852 states and 34218 transitions. [2021-11-04 06:21:00,434 INFO L78 Accepts]: Start accepts. Automaton has 24852 states and 34218 transitions. Word has length 62 [2021-11-04 06:21:00,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:21:00,434 INFO L470 AbstractCegarLoop]: Abstraction has 24852 states and 34218 transitions. [2021-11-04 06:21:00,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:21:00,435 INFO L276 IsEmpty]: Start isEmpty. Operand 24852 states and 34218 transitions. [2021-11-04 06:21:00,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-04 06:21:00,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:21:00,438 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] [2021-11-04 06:21:00,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 06:21:00,442 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 06:21:00,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:21:00,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1126343220, now seen corresponding path program 1 times [2021-11-04 06:21:00,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:21:00,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11516590] [2021-11-04 06:21:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:21:00,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:21:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:21:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:21:00,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:21:00,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11516590] [2021-11-04 06:21:00,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11516590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:21:00,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:21:00,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:21:00,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568992775] [2021-11-04 06:21:00,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:21:00,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:21:00,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:21:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:21:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:21:00,797 INFO L87 Difference]: Start difference. First operand 24852 states and 34218 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:21:02,906 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 [] [2021-11-04 06:21:40,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:21:40,031 INFO L93 Difference]: Finished difference Result 59410 states and 81429 transitions. [2021-11-04 06:21:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:21:40,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-04 06:21:40,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:21:40,088 INFO L225 Difference]: With dead ends: 59410 [2021-11-04 06:21:40,089 INFO L226 Difference]: Without dead ends: 34578 [2021-11-04 06:21:40,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:21:40,121 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1087 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 5679 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35650.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5679 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38645.33ms IncrementalHoareTripleChecker+Time [2021-11-04 06:21:40,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 0 Invalid, 5681 Unknown, 0 Unchecked, 25.87ms Time], IncrementalHoareTripleChecker [1 Valid, 5679 Invalid, 1 Unknown, 0 Unchecked, 38645.33ms Time] [2021-11-04 06:21:40,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34578 states. [2021-11-04 06:21:40,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34578 to 34532. [2021-11-04 06:21:40,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34532 states, 34479 states have (on average 1.368079120624148) internal successors, (47170), 34531 states have internal predecessors, (47170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:21:40,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34532 states to 34532 states and 47170 transitions. [2021-11-04 06:21:40,612 INFO L78 Accepts]: Start accepts. Automaton has 34532 states and 47170 transitions. Word has length 70 [2021-11-04 06:21:40,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:21:40,614 INFO L470 AbstractCegarLoop]: Abstraction has 34532 states and 47170 transitions. [2021-11-04 06:21:40,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:21:40,614 INFO L276 IsEmpty]: Start isEmpty. Operand 34532 states and 47170 transitions. [2021-11-04 06:21:40,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-04 06:21:40,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:21:40,617 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 06:21:40,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 06:21:40,618 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 06:21:40,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:21:40,618 INFO L85 PathProgramCache]: Analyzing trace with hash 742851849, now seen corresponding path program 1 times [2021-11-04 06:21:40,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:21:40,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169868092] [2021-11-04 06:21:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:21:40,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:21:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:21:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:21:40,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:21:40,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169868092] [2021-11-04 06:21:40,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169868092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:21:40,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:21:40,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:21:40,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527107756] [2021-11-04 06:21:40,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:21:40,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:21:40,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:21:40,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:21:40,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:21:40,935 INFO L87 Difference]: Start difference. First operand 34532 states and 47170 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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) [2021-11-04 06:21:43,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:22:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:22:21,764 INFO L93 Difference]: Finished difference Result 85229 states and 116235 transitions. [2021-11-04 06:22:21,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:22:21,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 [2021-11-04 06:22:21,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:22:21,854 INFO L225 Difference]: With dead ends: 85229 [2021-11-04 06:22:21,854 INFO L226 Difference]: Without dead ends: 50717 [2021-11-04 06:22:21,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:22:21,896 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2440 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 5551 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36730.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2440 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.44ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 5551 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39998.23ms IncrementalHoareTripleChecker+Time [2021-11-04 06:22:21,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2440 Valid, 0 Invalid, 5564 Unknown, 0 Unchecked, 28.44ms Time], IncrementalHoareTripleChecker [12 Valid, 5551 Invalid, 1 Unknown, 0 Unchecked, 39998.23ms Time] [2021-11-04 06:22:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50717 states. [2021-11-04 06:22:22,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50717 to 50524. [2021-11-04 06:22:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50524 states, 50471 states have (on average 1.3637534425709814) internal successors, (68830), 50523 states have internal predecessors, (68830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:22:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50524 states to 50524 states and 68830 transitions. [2021-11-04 06:22:22,617 INFO L78 Accepts]: Start accepts. Automaton has 50524 states and 68830 transitions. Word has length 89 [2021-11-04 06:22:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:22:22,617 INFO L470 AbstractCegarLoop]: Abstraction has 50524 states and 68830 transitions. [2021-11-04 06:22:22,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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) [2021-11-04 06:22:22,617 INFO L276 IsEmpty]: Start isEmpty. Operand 50524 states and 68830 transitions. [2021-11-04 06:22:22,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-04 06:22:22,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:22:22,622 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 06:22:22,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 06:22:22,623 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 06:22:22,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:22:22,623 INFO L85 PathProgramCache]: Analyzing trace with hash -767985962, now seen corresponding path program 1 times [2021-11-04 06:22:22,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:22:22,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884572245] [2021-11-04 06:22:22,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:22:22,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:22:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:22:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 06:22:23,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:22:23,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884572245] [2021-11-04 06:22:23,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884572245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:22:23,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:22:23,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:22:23,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658350368] [2021-11-04 06:22:23,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:22:23,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:22:23,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:22:23,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:22:23,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:22:23,077 INFO L87 Difference]: Start difference. First operand 50524 states and 68830 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:22:25,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:23:06,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:23:06,431 INFO L93 Difference]: Finished difference Result 124619 states and 169513 transitions. [2021-11-04 06:23:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:23:06,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-04 06:23:06,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:23:06,564 INFO L225 Difference]: With dead ends: 124619 [2021-11-04 06:23:06,565 INFO L226 Difference]: Without dead ends: 74115 [2021-11-04 06:23:06,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:23:06,645 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2423 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 5541 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38250.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.87ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 5541 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42223.51ms IncrementalHoareTripleChecker+Time [2021-11-04 06:23:06,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2423 Valid, 0 Invalid, 5554 Unknown, 0 Unchecked, 25.87ms Time], IncrementalHoareTripleChecker [12 Valid, 5541 Invalid, 1 Unknown, 0 Unchecked, 42223.51ms Time] [2021-11-04 06:23:06,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74115 states. [2021-11-04 06:23:07,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74115 to 73932. [2021-11-04 06:23:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73932 states, 73879 states have (on average 1.3590059421486484) internal successors, (100402), 73931 states have internal predecessors, (100402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:23:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73932 states to 73932 states and 100402 transitions. [2021-11-04 06:23:08,104 INFO L78 Accepts]: Start accepts. Automaton has 73932 states and 100402 transitions. Word has length 101 [2021-11-04 06:23:08,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:23:08,107 INFO L470 AbstractCegarLoop]: Abstraction has 73932 states and 100402 transitions. [2021-11-04 06:23:08,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:23:08,107 INFO L276 IsEmpty]: Start isEmpty. Operand 73932 states and 100402 transitions. [2021-11-04 06:23:08,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-04 06:23:08,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:23:08,113 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-04 06:23:08,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 06:23:08,113 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 06:23:08,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:23:08,114 INFO L85 PathProgramCache]: Analyzing trace with hash -42916485, now seen corresponding path program 1 times [2021-11-04 06:23:08,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:23:08,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568176209] [2021-11-04 06:23:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:23:08,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:23:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:23:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 06:23:09,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:23:09,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568176209] [2021-11-04 06:23:09,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568176209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:23:09,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:23:09,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 06:23:09,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335147219] [2021-11-04 06:23:09,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:23:09,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 06:23:09,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:23:09,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 06:23:09,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 06:23:09,039 INFO L87 Difference]: Start difference. First operand 73932 states and 100402 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:23:11,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:25:29,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:25:29,260 INFO L93 Difference]: Finished difference Result 268198 states and 363534 transitions. [2021-11-04 06:25:29,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 06:25:29,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-04 06:25:29,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:25:29,675 INFO L225 Difference]: With dead ends: 268198 [2021-11-04 06:25:29,675 INFO L226 Difference]: Without dead ends: 194286 [2021-11-04 06:25:29,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 279.20ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-04 06:25:29,828 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13859 mSDsluCounter, 14404 mSDsCounter, 0 mSdLazyCounter, 19573 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126879.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13859 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 203.02ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19573 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136490.23ms IncrementalHoareTripleChecker+Time [2021-11-04 06:25:29,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13859 Valid, 0 Invalid, 19580 Unknown, 0 Unchecked, 203.02ms Time], IncrementalHoareTripleChecker [6 Valid, 19573 Invalid, 1 Unknown, 0 Unchecked, 136490.23ms Time] [2021-11-04 06:25:30,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194286 states. [2021-11-04 06:25:31,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194286 to 74076. [2021-11-04 06:25:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74076 states, 74023 states have (on average 1.3586317766099725) internal successors, (100570), 74075 states have internal predecessors, (100570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:25:32,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74076 states to 74076 states and 100570 transitions. [2021-11-04 06:25:32,165 INFO L78 Accepts]: Start accepts. Automaton has 74076 states and 100570 transitions. Word has length 104 [2021-11-04 06:25:32,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:25:32,165 INFO L470 AbstractCegarLoop]: Abstraction has 74076 states and 100570 transitions. [2021-11-04 06:25:32,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:25:32,166 INFO L276 IsEmpty]: Start isEmpty. Operand 74076 states and 100570 transitions. [2021-11-04 06:25:32,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-04 06:25:32,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:25:32,177 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 06:25:32,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 06:25:32,177 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 06:25:32,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:25:32,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1443296178, now seen corresponding path program 1 times [2021-11-04 06:25:32,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:25:32,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011667812] [2021-11-04 06:25:32,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:25:32,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:25:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:25:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 06:25:32,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:25:32,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011667812] [2021-11-04 06:25:32,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011667812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:25:32,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 06:25:32,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 06:25:32,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216893707] [2021-11-04 06:25:32,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:25:32,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 06:25:32,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:25:32,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 06:25:32,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:25:32,562 INFO L87 Difference]: Start difference. First operand 74076 states and 100570 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:25:34,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:26:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:26:12,855 INFO L93 Difference]: Finished difference Result 148456 states and 201768 transitions. [2021-11-04 06:26:12,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 06:26:12,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 109 [2021-11-04 06:26:12,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:26:12,989 INFO L225 Difference]: With dead ends: 148456 [2021-11-04 06:26:12,990 INFO L226 Difference]: Without dead ends: 74400 [2021-11-04 06:26:13,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 06:26:13,060 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2558 mSDsCounter, 0 mSdLazyCounter, 5141 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35576.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.15ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5141 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38859.11ms IncrementalHoareTripleChecker+Time [2021-11-04 06:26:13,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5150 Unknown, 0 Unchecked, 28.15ms Time], IncrementalHoareTripleChecker [8 Valid, 5141 Invalid, 1 Unknown, 0 Unchecked, 38859.11ms Time] [2021-11-04 06:26:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74400 states. [2021-11-04 06:26:14,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74400 to 74400. [2021-11-04 06:26:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74400 states, 74347 states have (on average 1.3570688797126986) internal successors, (100894), 74399 states have internal predecessors, (100894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:26:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74400 states to 74400 states and 100894 transitions. [2021-11-04 06:26:14,888 INFO L78 Accepts]: Start accepts. Automaton has 74400 states and 100894 transitions. Word has length 109 [2021-11-04 06:26:14,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:26:14,888 INFO L470 AbstractCegarLoop]: Abstraction has 74400 states and 100894 transitions. [2021-11-04 06:26:14,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:26:14,889 INFO L276 IsEmpty]: Start isEmpty. Operand 74400 states and 100894 transitions. [2021-11-04 06:26:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-04 06:26:14,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:26:14,896 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 06:26:14,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 06:26:14,897 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 06:26:14,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:26:14,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1757183884, now seen corresponding path program 1 times [2021-11-04 06:26:14,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:26:14,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363849075] [2021-11-04 06:26:14,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:26:14,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:26:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:26:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 06:26:15,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:26:15,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363849075] [2021-11-04 06:26:15,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363849075] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 06:26:15,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394271492] [2021-11-04 06:26:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:26:15,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 06:26:15,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:26:15,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 06:26:15,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 06:26:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:26:17,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 6874 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 06:26:17,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 06:26:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 06:26:17,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 06:26:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 06:26:18,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394271492] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 06:26:18,378 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 06:26:18,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-04 06:26:18,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221594842] [2021-11-04 06:26:18,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 06:26:18,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 06:26:18,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:26:18,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 06:26:18,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 06:26:18,379 INFO L87 Difference]: Start difference. First operand 74400 states and 100894 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:26:20,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:27:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:27:19,916 INFO L93 Difference]: Finished difference Result 149752 states and 203712 transitions. [2021-11-04 06:27:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 06:27:19,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 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 110 [2021-11-04 06:27:19,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:27:20,062 INFO L225 Difference]: With dead ends: 149752 [2021-11-04 06:27:20,062 INFO L226 Difference]: Without dead ends: 75372 [2021-11-04 06:27:20,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 378.34ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 06:27:20,113 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 5116 mSDsCounter, 0 mSdLazyCounter, 7719 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53140.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.87ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 7719 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59736.19ms IncrementalHoareTripleChecker+Time [2021-11-04 06:27:20,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 7769 Unknown, 0 Unchecked, 49.87ms Time], IncrementalHoareTripleChecker [49 Valid, 7719 Invalid, 1 Unknown, 0 Unchecked, 59736.19ms Time] [2021-11-04 06:27:20,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75372 states. [2021-11-04 06:27:21,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75372 to 75372. [2021-11-04 06:27:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75372 states, 75319 states have (on average 1.352460866448041) internal successors, (101866), 75371 states have internal predecessors, (101866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:27:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75372 states to 75372 states and 101866 transitions. [2021-11-04 06:27:21,871 INFO L78 Accepts]: Start accepts. Automaton has 75372 states and 101866 transitions. Word has length 110 [2021-11-04 06:27:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:27:21,872 INFO L470 AbstractCegarLoop]: Abstraction has 75372 states and 101866 transitions. [2021-11-04 06:27:21,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 06:27:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 75372 states and 101866 transitions. [2021-11-04 06:27:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-04 06:27:21,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:27:21,880 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:27:21,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 06:27:22,103 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,SelfDestructingSolverStorable10 [2021-11-04 06:27:22,103 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-04 06:27:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:27:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash 486021682, now seen corresponding path program 2 times [2021-11-04 06:27:22,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:27:22,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823247416] [2021-11-04 06:27:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:27:22,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:27:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:27:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 06:27:23,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:27:23,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823247416] [2021-11-04 06:27:23,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823247416] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 06:27:23,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468606483] [2021-11-04 06:27:23,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 06:27:23,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 06:27:23,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:27:23,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 06:27:23,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process Killed by 15