./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f37aa3f5f53d7516c3aab2329ab9f19add00a9b7f37383228b3b0ae48d55a761 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 02:46:21,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 02:46:21,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 02:46:21,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 02:46:21,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 02:46:21,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 02:46:21,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 02:46:21,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 02:46:21,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 02:46:21,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 02:46:21,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 02:46:21,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 02:46:21,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 02:46:21,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 02:46:21,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 02:46:21,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 02:46:21,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 02:46:21,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 02:46:21,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 02:46:21,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 02:46:21,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 02:46:21,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 02:46:21,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 02:46:21,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 02:46:21,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 02:46:21,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 02:46:21,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 02:46:21,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 02:46:21,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 02:46:21,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 02:46:21,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 02:46:21,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 02:46:21,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 02:46:21,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 02:46:21,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 02:46:21,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 02:46:21,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 02:46:21,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 02:46:21,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 02:46:21,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 02:46:21,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 02:46:21,198 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 02:46:21,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 02:46:21,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 02:46:21,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 02:46:21,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 02:46:21,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 02:46:21,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 02:46:21,228 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 02:46:21,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 02:46:21,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 02:46:21,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 02:46:21,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 02:46:21,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 02:46:21,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 02:46:21,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 02:46:21,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 02:46:21,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 02:46:21,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 02:46:21,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 02:46:21,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 02:46:21,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 02:46:21,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 02:46:21,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 02:46:21,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 02:46:21,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 02:46:21,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 02:46:21,230 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 02:46:21,230 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 02:46:21,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 02:46:21,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 02:46:21,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f37aa3f5f53d7516c3aab2329ab9f19add00a9b7f37383228b3b0ae48d55a761 [2021-11-04 02:46:21,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 02:46:21,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 02:46:21,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 02:46:21,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 02:46:21,452 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 02:46:21,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2021-11-04 02:46:21,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84ca8300d/5b311858dda34929acd8b14318df142f/FLAGfe4c3b865 [2021-11-04 02:46:22,061 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 02:46:22,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2021-11-04 02:46:22,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84ca8300d/5b311858dda34929acd8b14318df142f/FLAGfe4c3b865 [2021-11-04 02:46:22,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84ca8300d/5b311858dda34929acd8b14318df142f [2021-11-04 02:46:22,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 02:46:22,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 02:46:22,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 02:46:22,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 02:46:22,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 02:46:22,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:46:22" (1/1) ... [2021-11-04 02:46:22,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55812345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:22, skipping insertion in model container [2021-11-04 02:46:22,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:46:22" (1/1) ... [2021-11-04 02:46:22,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 02:46:22,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 02:46:23,114 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i[148417,148430] [2021-11-04 02:46:23,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 02:46:23,191 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 02:46:23,365 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i[148417,148430] [2021-11-04 02:46:23,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 02:46:23,416 INFO L208 MainTranslator]: Completed translation [2021-11-04 02:46:23,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:23 WrapperNode [2021-11-04 02:46:23,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 02:46:23,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 02:46:23,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 02:46:23,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 02:46:23,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:23" (1/1) ... [2021-11-04 02:46:23,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:23" (1/1) ... [2021-11-04 02:46:24,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 02:46:24,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 02:46:24,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 02:46:24,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 02:46:24,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:23" (1/1) ... [2021-11-04 02:46:24,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:23" (1/1) ... [2021-11-04 02:46:24,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:23" (1/1) ... [2021-11-04 02:46:24,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:23" (1/1) ... [2021-11-04 02:46:25,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:23" (1/1) ... [2021-11-04 02:46:25,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:23" (1/1) ... [2021-11-04 02:46:25,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:23" (1/1) ... [2021-11-04 02:46:25,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 02:46:25,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 02:46:25,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 02:46:25,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 02:46:25,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:23" (1/1) ... [2021-11-04 02:46:25,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 02:46:25,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:46:25,494 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 02:46:25,501 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 02:46:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 02:46:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 02:46:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 02:46:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 02:46:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 02:46:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 02:46:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 02:46:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 02:46:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 02:46:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 02:46:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 02:46:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 02:46:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 02:46:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 02:46:25,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 02:46:29,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 02:46:29,658 INFO L299 CfgBuilder]: Removed 7586 assume(true) statements. [2021-11-04 02:46:29,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:46:29 BoogieIcfgContainer [2021-11-04 02:46:29,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 02:46:29,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 02:46:29,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 02:46:29,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 02:46:29,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 02:46:22" (1/3) ... [2021-11-04 02:46:29,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4517b2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:46:29, skipping insertion in model container [2021-11-04 02:46:29,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:46:23" (2/3) ... [2021-11-04 02:46:29,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4517b2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:46:29, skipping insertion in model container [2021-11-04 02:46:29,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:46:29" (3/3) ... [2021-11-04 02:46:29,673 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2021-11-04 02:46:29,678 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 02:46:29,678 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-04 02:46:29,733 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 02:46:29,738 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 02:46:29,738 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-04 02:46:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 6878 states, 6865 states have (on average 1.3296431172614713) internal successors, (9128), 6877 states have internal predecessors, (9128), 0 states have call successors, (0), 0 states 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 02:46:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-04 02:46:29,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:46:29,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 02:46:29,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:46:29,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:46:29,822 INFO L85 PathProgramCache]: Analyzing trace with hash -179431811, now seen corresponding path program 1 times [2021-11-04 02:46:29,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:46:29,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929846587] [2021-11-04 02:46:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:46:29,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:46:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:46:30,214 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 02:46:30,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:46:30,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929846587] [2021-11-04 02:46:30,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929846587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:46:30,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 02:46:30,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 02:46:30,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966074659] [2021-11-04 02:46:30,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:46:30,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:46:30,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:46:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:46:30,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:46:30,256 INFO L87 Difference]: Start difference. First operand has 6878 states, 6865 states have (on average 1.3296431172614713) internal successors, (9128), 6877 states have internal predecessors, (9128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 02:46:31,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:46:33,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:46:37,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:01,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:47:01,087 INFO L93 Difference]: Finished difference Result 19997 states and 26541 transitions. [2021-11-04 02:47:01,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:47:01,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-11-04 02:47:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:47:01,166 INFO L225 Difference]: With dead ends: 19997 [2021-11-04 02:47:01,166 INFO L226 Difference]: Without dead ends: 13114 [2021-11-04 02:47:01,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:47:01,185 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8556 mSDsluCounter, 8626 mSDsCounter, 0 mSdLazyCounter, 17298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27466.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8556 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.04ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30153.14ms IncrementalHoareTripleChecker+Time [2021-11-04 02:47:01,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8556 Valid, 0 Invalid, 17300 Unknown, 0 Unchecked, 44.04ms Time], IncrementalHoareTripleChecker [2 Valid, 17298 Invalid, 0 Unknown, 0 Unchecked, 30153.14ms Time] [2021-11-04 02:47:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13114 states. [2021-11-04 02:47:01,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13114 to 13092. [2021-11-04 02:47:01,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13092 states, 13080 states have (on average 1.3134556574923548) internal successors, (17180), 13091 states have internal predecessors, (17180), 0 states have call successors, (0), 0 states 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 02:47:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13092 states to 13092 states and 17180 transitions. [2021-11-04 02:47:01,584 INFO L78 Accepts]: Start accepts. Automaton has 13092 states and 17180 transitions. Word has length 13 [2021-11-04 02:47:01,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:47:01,585 INFO L470 AbstractCegarLoop]: Abstraction has 13092 states and 17180 transitions. [2021-11-04 02:47:01,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 02:47:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 13092 states and 17180 transitions. [2021-11-04 02:47:01,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-04 02:47:01,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:47:01,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 02:47:01,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 02:47:01,595 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:47:01,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:47:01,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1960540172, now seen corresponding path program 1 times [2021-11-04 02:47:01,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:47:01,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827004277] [2021-11-04 02:47:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:47:01,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:47:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:47:01,722 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 02:47:01,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:47:01,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827004277] [2021-11-04 02:47:01,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827004277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:47:01,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 02:47:01,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 02:47:01,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077937318] [2021-11-04 02:47:01,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:47:01,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:47:01,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:47:01,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:47:01,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:47:01,727 INFO L87 Difference]: Start difference. First operand 13092 states and 17180 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 02:47:05,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:10,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:30,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:47:30,240 INFO L93 Difference]: Finished difference Result 35271 states and 46303 transitions. [2021-11-04 02:47:30,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:47:30,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-04 02:47:30,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:47:30,302 INFO L225 Difference]: With dead ends: 35271 [2021-11-04 02:47:30,303 INFO L226 Difference]: Without dead ends: 22182 [2021-11-04 02:47:30,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:47:30,327 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7970 mSDsluCounter, 6671 mSDsCounter, 0 mSdLazyCounter, 15413 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25470.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7970 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.20ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15413 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27747.14ms IncrementalHoareTripleChecker+Time [2021-11-04 02:47:30,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7970 Valid, 0 Invalid, 15418 Unknown, 0 Unchecked, 26.20ms Time], IncrementalHoareTripleChecker [3 Valid, 15413 Invalid, 2 Unknown, 0 Unchecked, 27747.14ms Time] [2021-11-04 02:47:30,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22182 states. [2021-11-04 02:47:30,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22182 to 22166. [2021-11-04 02:47:30,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22166 states, 22154 states have (on average 1.3140742078180012) internal successors, (29112), 22165 states have internal predecessors, (29112), 0 states have call successors, (0), 0 states 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 02:47:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22166 states to 22166 states and 29112 transitions. [2021-11-04 02:47:30,769 INFO L78 Accepts]: Start accepts. Automaton has 22166 states and 29112 transitions. Word has length 15 [2021-11-04 02:47:30,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:47:30,769 INFO L470 AbstractCegarLoop]: Abstraction has 22166 states and 29112 transitions. [2021-11-04 02:47:30,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 02:47:30,770 INFO L276 IsEmpty]: Start isEmpty. Operand 22166 states and 29112 transitions. [2021-11-04 02:47:30,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-04 02:47:30,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:47:30,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 02:47:30,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 02:47:30,771 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:47:30,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:47:30,772 INFO L85 PathProgramCache]: Analyzing trace with hash 143070602, now seen corresponding path program 1 times [2021-11-04 02:47:30,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:47:30,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382983266] [2021-11-04 02:47:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:47:30,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:47:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:47:30,853 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 02:47:30,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:47:30,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382983266] [2021-11-04 02:47:30,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382983266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:47:30,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 02:47:30,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 02:47:30,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468494567] [2021-11-04 02:47:30,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:47:30,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:47:30,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:47:30,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:47:30,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:47:30,856 INFO L87 Difference]: Start difference. First operand 22166 states and 29112 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 02:47:32,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:34,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:47:58,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:47:58,527 INFO L93 Difference]: Finished difference Result 62522 states and 82134 transitions. [2021-11-04 02:47:58,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:47:58,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-04 02:47:58,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:47:58,639 INFO L225 Difference]: With dead ends: 62522 [2021-11-04 02:47:58,639 INFO L226 Difference]: Without dead ends: 40359 [2021-11-04 02:47:58,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:47:58,701 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7995 mSDsluCounter, 6681 mSDsCounter, 0 mSdLazyCounter, 15342 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24524.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7995 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.98ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15342 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26836.20ms IncrementalHoareTripleChecker+Time [2021-11-04 02:47:58,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7995 Valid, 0 Invalid, 15344 Unknown, 0 Unchecked, 18.98ms Time], IncrementalHoareTripleChecker [1 Valid, 15342 Invalid, 1 Unknown, 0 Unchecked, 26836.20ms Time] [2021-11-04 02:47:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40359 states. [2021-11-04 02:47:59,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40359 to 40321. [2021-11-04 02:47:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40321 states, 40309 states have (on average 1.3146443722245653) internal successors, (52992), 40320 states have internal predecessors, (52992), 0 states have call successors, (0), 0 states 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 02:47:59,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40321 states to 40321 states and 52992 transitions. [2021-11-04 02:47:59,593 INFO L78 Accepts]: Start accepts. Automaton has 40321 states and 52992 transitions. Word has length 16 [2021-11-04 02:47:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:47:59,593 INFO L470 AbstractCegarLoop]: Abstraction has 40321 states and 52992 transitions. [2021-11-04 02:47:59,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 02:47:59,594 INFO L276 IsEmpty]: Start isEmpty. Operand 40321 states and 52992 transitions. [2021-11-04 02:47:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-04 02:47:59,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:47:59,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 02:47:59,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 02:47:59,597 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:47:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:47:59,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1587883540, now seen corresponding path program 1 times [2021-11-04 02:47:59,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:47:59,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695105606] [2021-11-04 02:47:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:47:59,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:47:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:47:59,686 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 02:47:59,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:47:59,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695105606] [2021-11-04 02:47:59,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695105606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:47:59,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 02:47:59,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 02:47:59,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42393069] [2021-11-04 02:47:59,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:47:59,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:47:59,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:47:59,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:47:59,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:47:59,689 INFO L87 Difference]: Start difference. First operand 40321 states and 52992 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 02:48:01,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:48:04,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:48:25,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:48:25,520 INFO L93 Difference]: Finished difference Result 80657 states and 106007 transitions. [2021-11-04 02:48:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:48:25,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-04 02:48:25,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:48:25,604 INFO L225 Difference]: With dead ends: 80657 [2021-11-04 02:48:25,604 INFO L226 Difference]: Without dead ends: 40339 [2021-11-04 02:48:25,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:48:25,667 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 8638 mSDsCounter, 0 mSdLazyCounter, 17287 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23252.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17287 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25036.13ms IncrementalHoareTripleChecker+Time [2021-11-04 02:48:25,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 17289 Unknown, 0 Unchecked, 20.08ms Time], IncrementalHoareTripleChecker [0 Valid, 17287 Invalid, 2 Unknown, 0 Unchecked, 25036.13ms Time] [2021-11-04 02:48:25,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40339 states. [2021-11-04 02:48:26,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40339 to 40323. [2021-11-04 02:48:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40323 states, 40311 states have (on average 1.3146287613802685) internal successors, (52994), 40322 states have internal predecessors, (52994), 0 states have call successors, (0), 0 states 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 02:48:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40323 states to 40323 states and 52994 transitions. [2021-11-04 02:48:26,528 INFO L78 Accepts]: Start accepts. Automaton has 40323 states and 52994 transitions. Word has length 23 [2021-11-04 02:48:26,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:48:26,528 INFO L470 AbstractCegarLoop]: Abstraction has 40323 states and 52994 transitions. [2021-11-04 02:48:26,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 02:48:26,529 INFO L276 IsEmpty]: Start isEmpty. Operand 40323 states and 52994 transitions. [2021-11-04 02:48:26,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-04 02:48:26,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:48:26,535 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 02:48:26,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 02:48:26,536 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:48:26,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:48:26,536 INFO L85 PathProgramCache]: Analyzing trace with hash -345508526, now seen corresponding path program 1 times [2021-11-04 02:48:26,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:48:26,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69767508] [2021-11-04 02:48:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:48:26,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:48:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:48:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:48:26,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:48:26,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69767508] [2021-11-04 02:48:26,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69767508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:48:26,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 02:48:26,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 02:48:26,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783934300] [2021-11-04 02:48:26,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:48:26,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:48:26,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:48:26,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:48:26,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:48:26,634 INFO L87 Difference]: Start difference. First operand 40323 states and 52994 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 02:48:30,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:48:33,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:48:57,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:48:57,966 INFO L93 Difference]: Finished difference Result 91833 states and 121054 transitions. [2021-11-04 02:48:57,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:48:57,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-04 02:48:57,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:48:58,074 INFO L225 Difference]: With dead ends: 91833 [2021-11-04 02:48:58,075 INFO L226 Difference]: Without dead ends: 51513 [2021-11-04 02:48:58,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 02:48:58,142 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3421 mSDsluCounter, 8586 mSDsCounter, 0 mSdLazyCounter, 17400 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27825.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3421 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.88ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17400 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30223.65ms IncrementalHoareTripleChecker+Time [2021-11-04 02:48:58,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3421 Valid, 0 Invalid, 17404 Unknown, 0 Unchecked, 24.88ms Time], IncrementalHoareTripleChecker [2 Valid, 17400 Invalid, 2 Unknown, 0 Unchecked, 30223.65ms Time] [2021-11-04 02:48:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51513 states. [2021-11-04 02:48:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51513 to 51475. [2021-11-04 02:48:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51475 states, 51463 states have (on average 1.3218040145347143) internal successors, (68024), 51474 states have internal predecessors, (68024), 0 states have call successors, (0), 0 states 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 02:48:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51475 states to 51475 states and 68024 transitions. [2021-11-04 02:48:59,151 INFO L78 Accepts]: Start accepts. Automaton has 51475 states and 68024 transitions. Word has length 27 [2021-11-04 02:48:59,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:48:59,152 INFO L470 AbstractCegarLoop]: Abstraction has 51475 states and 68024 transitions. [2021-11-04 02:48:59,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 02:48:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 51475 states and 68024 transitions. [2021-11-04 02:48:59,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-04 02:48:59,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:48:59,153 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] [2021-11-04 02:48:59,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 02:48:59,153 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:48:59,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:48:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1974321421, now seen corresponding path program 1 times [2021-11-04 02:48:59,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:48:59,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337422367] [2021-11-04 02:48:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:48:59,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:48:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:48:59,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:48:59,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:48:59,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337422367] [2021-11-04 02:48:59,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337422367] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:48:59,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497122652] [2021-11-04 02:48:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:48:59,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:48:59,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:48:59,252 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 02:48:59,296 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 02:48:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:48:59,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 02:48:59,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:48:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:48:59,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:48:59,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497122652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:48:59,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:48:59,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:48:59,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380095518] [2021-11-04 02:48:59,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:48:59,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:48:59,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:48:59,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:48:59,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:48:59,791 INFO L87 Difference]: Start difference. First operand 51475 states and 68024 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 02:49:04,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:49:06,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:49:08,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:49:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:49:28,600 INFO L93 Difference]: Finished difference Result 105359 states and 139209 transitions. [2021-11-04 02:49:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:49:28,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-04 02:49:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:49:28,704 INFO L225 Difference]: With dead ends: 105359 [2021-11-04 02:49:28,705 INFO L226 Difference]: Without dead ends: 53887 [2021-11-04 02:49:28,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.90ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:49:28,759 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 787 mSDsluCounter, 8636 mSDsCounter, 0 mSdLazyCounter, 17289 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25835.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.83ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17289 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27794.81ms IncrementalHoareTripleChecker+Time [2021-11-04 02:49:28,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 0 Invalid, 17292 Unknown, 0 Unchecked, 19.83ms Time], IncrementalHoareTripleChecker [2 Valid, 17289 Invalid, 1 Unknown, 0 Unchecked, 27794.81ms Time] [2021-11-04 02:49:28,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53887 states. [2021-11-04 02:49:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53887 to 51483. [2021-11-04 02:49:29,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51483 states, 51471 states have (on average 1.3217539973965922) internal successors, (68032), 51482 states have internal predecessors, (68032), 0 states have call successors, (0), 0 states 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 02:49:29,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51483 states to 51483 states and 68032 transitions. [2021-11-04 02:49:29,770 INFO L78 Accepts]: Start accepts. Automaton has 51483 states and 68032 transitions. Word has length 27 [2021-11-04 02:49:29,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:49:29,771 INFO L470 AbstractCegarLoop]: Abstraction has 51483 states and 68032 transitions. [2021-11-04 02:49:29,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 02:49:29,771 INFO L276 IsEmpty]: Start isEmpty. Operand 51483 states and 68032 transitions. [2021-11-04 02:49:29,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-04 02:49:29,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:49:29,772 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] [2021-11-04 02:49:29,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 02:49:29,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-04 02:49:29,992 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:49:29,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:49:29,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1290763118, now seen corresponding path program 1 times [2021-11-04 02:49:29,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:49:29,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423470583] [2021-11-04 02:49:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:49:29,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:49:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:49:30,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 02:49:30,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:49:30,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423470583] [2021-11-04 02:49:30,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423470583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:49:30,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059113097] [2021-11-04 02:49:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:49:30,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:49:30,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:49:30,072 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 02:49:30,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 02:49:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:49:30,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:49:30,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:49:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:49:30,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:49:30,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059113097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:49:30,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:49:30,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:49:30,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084697421] [2021-11-04 02:49:30,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:49:30,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:49:30,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:49:30,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:49:30,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:49:30,580 INFO L87 Difference]: Start difference. First operand 51483 states and 68032 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 02:49:35,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:49:37,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:50:05,105 INFO L93 Difference]: Finished difference Result 128810 states and 170214 transitions. [2021-11-04 02:50:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:50:05,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-04 02:50:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:50:05,272 INFO L225 Difference]: With dead ends: 128810 [2021-11-04 02:50:05,272 INFO L226 Difference]: Without dead ends: 77330 [2021-11-04 02:50:05,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.61ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:50:05,346 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7995 mSDsluCounter, 7853 mSDsCounter, 0 mSdLazyCounter, 17861 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30238.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7995 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17861 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33029.62ms IncrementalHoareTripleChecker+Time [2021-11-04 02:50:05,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7995 Valid, 0 Invalid, 17863 Unknown, 0 Unchecked, 26.71ms Time], IncrementalHoareTripleChecker [1 Valid, 17861 Invalid, 1 Unknown, 0 Unchecked, 33029.62ms Time] [2021-11-04 02:50:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77330 states. [2021-11-04 02:50:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77330 to 53887. [2021-11-04 02:50:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53887 states, 53875 states have (on average 1.3212807424593969) internal successors, (71184), 53886 states have internal predecessors, (71184), 0 states have call successors, (0), 0 states 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 02:50:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53887 states to 53887 states and 71184 transitions. [2021-11-04 02:50:06,879 INFO L78 Accepts]: Start accepts. Automaton has 53887 states and 71184 transitions. Word has length 28 [2021-11-04 02:50:06,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:50:06,879 INFO L470 AbstractCegarLoop]: Abstraction has 53887 states and 71184 transitions. [2021-11-04 02:50:06,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 02:50:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 53887 states and 71184 transitions. [2021-11-04 02:50:06,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-04 02:50:06,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:50:06,881 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] [2021-11-04 02:50:06,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-04 02:50:07,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-04 02:50:07,096 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:50:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:50:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash 630789130, now seen corresponding path program 1 times [2021-11-04 02:50:07,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:50:07,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122176558] [2021-11-04 02:50:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:50:07,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:50:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:50:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:50:07,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:50:07,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122176558] [2021-11-04 02:50:07,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122176558] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:50:07,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769879801] [2021-11-04 02:50:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:50:07,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:50:07,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:50:07,191 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:50:07,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 02:50:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:50:07,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:50:07,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:50:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 02:50:07,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:50:07,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769879801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:50:07,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:50:07,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:50:07,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648301105] [2021-11-04 02:50:07,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:50:07,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:50:07,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:50:07,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:50:07,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:50:07,691 INFO L87 Difference]: Start difference. First operand 53887 states and 71184 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 02:50:11,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:14,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:50:43,095 INFO L93 Difference]: Finished difference Result 102845 states and 135950 transitions. [2021-11-04 02:50:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:50:43,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-04 02:50:43,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:50:43,336 INFO L225 Difference]: With dead ends: 102845 [2021-11-04 02:50:43,336 INFO L226 Difference]: Without dead ends: 102833 [2021-11-04 02:50:43,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.76ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:50:43,377 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7361 mSDsluCounter, 8636 mSDsCounter, 0 mSdLazyCounter, 17295 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30710.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7361 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.46ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17295 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33648.95ms IncrementalHoareTripleChecker+Time [2021-11-04 02:50:43,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7361 Valid, 0 Invalid, 17299 Unknown, 0 Unchecked, 30.46ms Time], IncrementalHoareTripleChecker [2 Valid, 17295 Invalid, 2 Unknown, 0 Unchecked, 33648.95ms Time] [2021-11-04 02:50:43,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102833 states. [2021-11-04 02:50:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102833 to 53887. [2021-11-04 02:50:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53887 states, 53875 states have (on average 1.3212436194895592) internal successors, (71182), 53886 states have internal predecessors, (71182), 0 states have call successors, (0), 0 states 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 02:50:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53887 states to 53887 states and 71182 transitions. [2021-11-04 02:50:45,054 INFO L78 Accepts]: Start accepts. Automaton has 53887 states and 71182 transitions. Word has length 33 [2021-11-04 02:50:45,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:50:45,055 INFO L470 AbstractCegarLoop]: Abstraction has 53887 states and 71182 transitions. [2021-11-04 02:50:45,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 02:50:45,055 INFO L276 IsEmpty]: Start isEmpty. Operand 53887 states and 71182 transitions. [2021-11-04 02:50:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-04 02:50:45,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:50:45,056 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] [2021-11-04 02:50:45,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-04 02:50:45,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:50:45,272 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:50:45,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:50:45,272 INFO L85 PathProgramCache]: Analyzing trace with hash 630848712, now seen corresponding path program 1 times [2021-11-04 02:50:45,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:50:45,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451748790] [2021-11-04 02:50:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:50:45,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:50:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:50:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:50:45,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:50:45,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451748790] [2021-11-04 02:50:45,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451748790] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:50:45,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646853410] [2021-11-04 02:50:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:50:45,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:50:45,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:50:45,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:50:45,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 02:50:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:50:45,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:50:45,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:50:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 02:50:46,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:50:46,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646853410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:50:46,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:50:46,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:50:46,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181139581] [2021-11-04 02:50:46,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:50:46,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:50:46,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:50:46,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:50:46,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:50:46,072 INFO L87 Difference]: Start difference. First operand 53887 states and 71182 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 02:50:49,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:50:52,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:51:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:51:19,507 INFO L93 Difference]: Finished difference Result 82573 states and 109082 transitions. [2021-11-04 02:51:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:51:19,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-04 02:51:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:51:19,670 INFO L225 Difference]: With dead ends: 82573 [2021-11-04 02:51:19,670 INFO L226 Difference]: Without dead ends: 82571 [2021-11-04 02:51:19,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.99ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:51:19,697 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7332 mSDsluCounter, 8631 mSDsCounter, 0 mSdLazyCounter, 17277 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28887.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7332 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.86ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17277 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31848.43ms IncrementalHoareTripleChecker+Time [2021-11-04 02:51:19,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7332 Valid, 0 Invalid, 17280 Unknown, 0 Unchecked, 23.86ms Time], IncrementalHoareTripleChecker [1 Valid, 17277 Invalid, 2 Unknown, 0 Unchecked, 31848.43ms Time] [2021-11-04 02:51:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82571 states. [2021-11-04 02:51:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82571 to 82555. [2021-11-04 02:51:21,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82555 states, 82543 states have (on average 1.3213961208097598) internal successors, (109072), 82554 states have internal predecessors, (109072), 0 states have call successors, (0), 0 states 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 02:51:21,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82555 states to 82555 states and 109072 transitions. [2021-11-04 02:51:21,885 INFO L78 Accepts]: Start accepts. Automaton has 82555 states and 109072 transitions. Word has length 33 [2021-11-04 02:51:21,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:51:21,886 INFO L470 AbstractCegarLoop]: Abstraction has 82555 states and 109072 transitions. [2021-11-04 02:51:21,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 02:51:21,886 INFO L276 IsEmpty]: Start isEmpty. Operand 82555 states and 109072 transitions. [2021-11-04 02:51:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-04 02:51:21,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:51:21,888 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 02:51:21,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-04 02:51:22,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:51:22,096 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:51:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:51:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1918506258, now seen corresponding path program 1 times [2021-11-04 02:51:22,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:51:22,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188068755] [2021-11-04 02:51:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:51:22,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:51:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:51:22,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:51:22,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:51:22,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188068755] [2021-11-04 02:51:22,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188068755] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:51:22,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681408836] [2021-11-04 02:51:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:51:22,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:51:22,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:51:22,201 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:51:22,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 02:51:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:51:22,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:51:22,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:51:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 02:51:22,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:51:22,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681408836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:51:22,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:51:22,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:51:22,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751290493] [2021-11-04 02:51:22,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:51:22,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:51:22,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:51:22,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:51:22,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:51:22,706 INFO L87 Difference]: Start difference. First operand 82555 states and 109072 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 02:51:26,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:51:28,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:51:31,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:51:58,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:51:58,811 INFO L93 Difference]: Finished difference Result 132497 states and 175134 transitions. [2021-11-04 02:51:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:51:58,812 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 02:51:58,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:51:59,121 INFO L225 Difference]: With dead ends: 132497 [2021-11-04 02:51:59,121 INFO L226 Difference]: Without dead ends: 132495 [2021-11-04 02:51:59,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.23ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:51:59,160 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7972 mSDsluCounter, 8635 mSDsCounter, 0 mSdLazyCounter, 17282 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30428.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7972 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17282 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33341.37ms IncrementalHoareTripleChecker+Time [2021-11-04 02:51:59,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7972 Valid, 0 Invalid, 17284 Unknown, 0 Unchecked, 24.13ms Time], IncrementalHoareTripleChecker [1 Valid, 17282 Invalid, 1 Unknown, 0 Unchecked, 33341.37ms Time] [2021-11-04 02:51:59,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132495 states. [2021-11-04 02:52:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132495 to 132477. [2021-11-04 02:52:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132477 states, 132465 states have (on average 1.3220322349299816) internal successors, (175123), 132476 states have internal predecessors, (175123), 0 states have call successors, (0), 0 states 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 02:52:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132477 states to 132477 states and 175123 transitions. [2021-11-04 02:52:03,059 INFO L78 Accepts]: Start accepts. Automaton has 132477 states and 175123 transitions. Word has length 34 [2021-11-04 02:52:03,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:52:03,059 INFO L470 AbstractCegarLoop]: Abstraction has 132477 states and 175123 transitions. [2021-11-04 02:52:03,060 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 02:52:03,060 INFO L276 IsEmpty]: Start isEmpty. Operand 132477 states and 175123 transitions. [2021-11-04 02:52:03,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-04 02:52:03,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:52:03,062 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] [2021-11-04 02:52:03,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-04 02:52:03,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-04 02:52:03,276 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:52:03,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:52:03,276 INFO L85 PathProgramCache]: Analyzing trace with hash 655868306, now seen corresponding path program 1 times [2021-11-04 02:52:03,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:52:03,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051624547] [2021-11-04 02:52:03,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:52:03,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:52:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:52:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:52:03,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:52:03,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051624547] [2021-11-04 02:52:03,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051624547] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:52:03,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962020] [2021-11-04 02:52:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:52:03,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:52:03,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:52:03,380 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:52:03,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 02:52:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:52:03,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:52:03,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:52:03,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 02:52:03,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:52:03,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:52:03,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:52:03,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:52:03,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888706976] [2021-11-04 02:52:03,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:52:03,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:52:03,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:52:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:52:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:52:03,874 INFO L87 Difference]: Start difference. First operand 132477 states and 175123 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 02:52:05,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:09,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:12,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:52:43,272 INFO L93 Difference]: Finished difference Result 132497 states and 175135 transitions. [2021-11-04 02:52:43,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:52:43,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-04 02:52:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:52:43,644 INFO L225 Difference]: With dead ends: 132497 [2021-11-04 02:52:43,645 INFO L226 Difference]: Without dead ends: 132495 [2021-11-04 02:52:43,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.49ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:52:43,708 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7326 mSDsluCounter, 8637 mSDsCounter, 0 mSdLazyCounter, 17283 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33175.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7326 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17283 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36303.30ms IncrementalHoareTripleChecker+Time [2021-11-04 02:52:43,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7326 Valid, 0 Invalid, 17286 Unknown, 0 Unchecked, 28.70ms Time], IncrementalHoareTripleChecker [1 Valid, 17283 Invalid, 2 Unknown, 0 Unchecked, 36303.30ms Time] [2021-11-04 02:52:43,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132495 states. [2021-11-04 02:52:47,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132495 to 132479. [2021-11-04 02:52:47,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132479 states, 132467 states have (on average 1.3220273728551262) internal successors, (175125), 132478 states have internal predecessors, (175125), 0 states have call successors, (0), 0 states 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 02:52:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132479 states to 132479 states and 175125 transitions. [2021-11-04 02:52:47,921 INFO L78 Accepts]: Start accepts. Automaton has 132479 states and 175125 transitions. Word has length 35 [2021-11-04 02:52:47,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:52:47,921 INFO L470 AbstractCegarLoop]: Abstraction has 132479 states and 175125 transitions. [2021-11-04 02:52:47,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 02:52:47,922 INFO L276 IsEmpty]: Start isEmpty. Operand 132479 states and 175125 transitions. [2021-11-04 02:52:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-04 02:52:47,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:52:47,923 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] [2021-11-04 02:52:47,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-04 02:52:48,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:52:48,143 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:52:48,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:52:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1142898824, now seen corresponding path program 1 times [2021-11-04 02:52:48,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:52:48,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497623463] [2021-11-04 02:52:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:52:48,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:52:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:52:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:52:48,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:52:48,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497623463] [2021-11-04 02:52:48,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497623463] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:52:48,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517736824] [2021-11-04 02:52:48,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:52:48,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:52:48,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:52:48,204 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:52:48,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 02:52:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:52:48,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 02:52:48,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:52:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 02:52:48,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:52:48,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517736824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:52:48,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:52:48,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:52:48,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558784624] [2021-11-04 02:52:48,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:52:48,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:52:48,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:52:48,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:52:48,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:52:48,723 INFO L87 Difference]: Start difference. First operand 132479 states and 175125 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 02:52:49,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:52,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:52:54,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:53:10,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:53:10,248 INFO L93 Difference]: Finished difference Result 132479 states and 175125 transitions. [2021-11-04 02:53:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:53:10,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-04 02:53:10,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:53:10,549 INFO L225 Difference]: With dead ends: 132479 [2021-11-04 02:53:10,550 INFO L226 Difference]: Without dead ends: 132455 [2021-11-04 02:53:10,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.10ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:53:10,591 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8570 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 8665 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16806.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8570 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.83ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18642.46ms IncrementalHoareTripleChecker+Time [2021-11-04 02:53:10,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8570 Valid, 0 Invalid, 8673 Unknown, 0 Unchecked, 10.83ms Time], IncrementalHoareTripleChecker [8 Valid, 8665 Invalid, 0 Unknown, 0 Unchecked, 18642.46ms Time] [2021-11-04 02:53:10,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132455 states. [2021-11-04 02:53:14,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132455 to 132455. [2021-11-04 02:53:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132455 states, 132448 states have (on average 1.3213865064025128) internal successors, (175015), 132454 states have internal predecessors, (175015), 0 states have call successors, (0), 0 states 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 02:53:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132455 states to 132455 states and 175015 transitions. [2021-11-04 02:53:14,823 INFO L78 Accepts]: Start accepts. Automaton has 132455 states and 175015 transitions. Word has length 36 [2021-11-04 02:53:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 02:53:14,823 INFO L470 AbstractCegarLoop]: Abstraction has 132455 states and 175015 transitions. [2021-11-04 02:53:14,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 02:53:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 132455 states and 175015 transitions. [2021-11-04 02:53:14,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-04 02:53:14,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 02:53:14,827 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 02:53:14,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-04 02:53:15,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:53:15,044 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 02:53:15,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 02:53:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash 3236238, now seen corresponding path program 1 times [2021-11-04 02:53:15,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 02:53:15,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623820676] [2021-11-04 02:53:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:53:15,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 02:53:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:53:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 02:53:15,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 02:53:15,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623820676] [2021-11-04 02:53:15,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623820676] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 02:53:15,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601260778] [2021-11-04 02:53:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 02:53:15,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 02:53:15,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 02:53:15,108 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 02:53:15,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 02:53:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 02:53:15,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 02:53:15,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 02:53:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 02:53:15,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 02:53:15,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601260778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 02:53:15,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 02:53:15,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 02:53:15,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080576897] [2021-11-04 02:53:15,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 02:53:15,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 02:53:15,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 02:53:15,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 02:53:15,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:53:15,633 INFO L87 Difference]: Start difference. First operand 132455 states and 175015 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 02:53:19,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:53:21,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:53:27,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 02:53:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 02:53:58,278 INFO L93 Difference]: Finished difference Result 369760 states and 488781 transitions. [2021-11-04 02:53:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 02:53:58,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-04 02:53:58,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 02:53:59,142 INFO L225 Difference]: With dead ends: 369760 [2021-11-04 02:53:59,142 INFO L226 Difference]: Without dead ends: 237308 [2021-11-04 02:53:59,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.91ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 02:53:59,346 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7952 mSDsluCounter, 8585 mSDsCounter, 0 mSdLazyCounter, 17252 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32972.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7952 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.61ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 17252 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36002.71ms IncrementalHoareTripleChecker+Time [2021-11-04 02:53:59,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7952 Valid, 0 Invalid, 17265 Unknown, 0 Unchecked, 23.61ms Time], IncrementalHoareTripleChecker [11 Valid, 17252 Invalid, 2 Unknown, 0 Unchecked, 36002.71ms Time] [2021-11-04 02:53:59,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237308 states.