./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.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 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 14:05:17,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 14:05:17,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 14:05:17,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 14:05:17,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 14:05:17,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 14:05:17,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 14:05:17,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 14:05:17,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 14:05:17,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 14:05:17,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 14:05:17,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 14:05:17,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 14:05:17,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 14:05:17,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 14:05:17,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 14:05:17,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 14:05:17,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 14:05:17,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 14:05:17,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 14:05:17,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 14:05:17,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 14:05:17,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 14:05:17,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 14:05:17,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 14:05:17,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 14:05:17,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 14:05:17,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 14:05:17,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 14:05:17,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 14:05:17,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 14:05:17,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 14:05:17,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 14:05:17,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 14:05:17,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 14:05:17,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 14:05:17,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 14:05:17,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 14:05:17,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 14:05:17,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 14:05:17,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 14:05:17,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 14:05:17,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 14:05:17,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 14:05:17,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 14:05:17,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 14:05:17,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 14:05:17,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 14:05:17,153 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 14:05:17,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 14:05:17,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 14:05:17,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 14:05:17,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 14:05:17,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 14:05:17,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 14:05:17,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 14:05:17,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 14:05:17,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 14:05:17,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 14:05:17,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 14:05:17,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 14:05:17,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:05:17,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 14:05:17,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 14:05:17,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 14:05:17,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 14:05:17,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 14:05:17,157 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 14:05:17,157 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 14:05:17,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 14:05:17,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 14:05:17,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b [2021-11-07 14:05:17,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 14:05:17,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 14:05:17,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 14:05:17,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 14:05:17,364 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 14:05:17,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 14:05:17,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ad94a55/edfc46aafd904527a73524808a144fe2/FLAG259faee28 [2021-11-07 14:05:17,943 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 14:05:17,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 14:05:17,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ad94a55/edfc46aafd904527a73524808a144fe2/FLAG259faee28 [2021-11-07 14:05:18,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ad94a55/edfc46aafd904527a73524808a144fe2 [2021-11-07 14:05:18,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 14:05:18,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 14:05:18,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 14:05:18,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 14:05:18,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 14:05:18,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:05:18" (1/1) ... [2021-11-07 14:05:18,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba6b045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:18, skipping insertion in model container [2021-11-07 14:05:18,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:05:18" (1/1) ... [2021-11-07 14:05:18,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 14:05:18,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 14:05:18,931 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-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-07 14:05:18,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:05:18,966 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 14:05:19,063 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-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-07 14:05:19,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:05:19,091 INFO L208 MainTranslator]: Completed translation [2021-11-07 14:05:19,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:19 WrapperNode [2021-11-07 14:05:19,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 14:05:19,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 14:05:19,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 14:05:19,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 14:05:19,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:19" (1/1) ... [2021-11-07 14:05:19,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:19" (1/1) ... [2021-11-07 14:05:19,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 14:05:19,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 14:05:19,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 14:05:19,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 14:05:19,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:19" (1/1) ... [2021-11-07 14:05:19,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:19" (1/1) ... [2021-11-07 14:05:19,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:19" (1/1) ... [2021-11-07 14:05:19,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:19" (1/1) ... [2021-11-07 14:05:19,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:19" (1/1) ... [2021-11-07 14:05:19,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:19" (1/1) ... [2021-11-07 14:05:19,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:19" (1/1) ... [2021-11-07 14:05:19,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 14:05:19,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 14:05:19,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 14:05:19,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 14:05:19,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:19" (1/1) ... [2021-11-07 14:05:19,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:05:19,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:05:19,317 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) [2021-11-07 14:05:19,320 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 [2021-11-07 14:05:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 14:05:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 14:05:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 14:05:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 14:05:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 14:05:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 14:05:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 14:05:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 14:05:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 14:05:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 14:05:19,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 14:05:20,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 14:05:20,233 INFO L299 CfgBuilder]: Removed 188 assume(true) statements. [2021-11-07 14:05:20,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:05:20 BoogieIcfgContainer [2021-11-07 14:05:20,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 14:05:20,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 14:05:20,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 14:05:20,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 14:05:20,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:05:18" (1/3) ... [2021-11-07 14:05:20,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28627739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:05:20, skipping insertion in model container [2021-11-07 14:05:20,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:05:19" (2/3) ... [2021-11-07 14:05:20,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28627739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:05:20, skipping insertion in model container [2021-11-07 14:05:20,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:05:20" (3/3) ... [2021-11-07 14:05:20,240 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 14:05:20,244 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 14:05:20,244 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 14:05:20,273 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 14:05:20,277 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 [2021-11-07 14:05:20,278 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 14:05:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 168 states have (on average 1.3988095238095237) internal successors, (235), 173 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:20,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 14:05:20,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:20,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:20,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:20,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:20,298 INFO L85 PathProgramCache]: Analyzing trace with hash -21777128, now seen corresponding path program 1 times [2021-11-07 14:05:20,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:20,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616203549] [2021-11-07 14:05:20,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:20,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:05:20,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:20,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616203549] [2021-11-07 14:05:20,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616203549] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:20,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:20,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:05:20,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658886469] [2021-11-07 14:05:20,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:20,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 14:05:20,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:20,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 14:05:20,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:05:20,599 INFO L87 Difference]: Start difference. First operand has 174 states, 168 states have (on average 1.3988095238095237) internal successors, (235), 173 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:20,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:20,626 INFO L93 Difference]: Finished difference Result 344 states and 465 transitions. [2021-11-07 14:05:20,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 14:05:20,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-07 14:05:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:20,634 INFO L225 Difference]: With dead ends: 344 [2021-11-07 14:05:20,635 INFO L226 Difference]: Without dead ends: 166 [2021-11-07 14:05:20,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:05:20,640 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:20,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 14:05:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-07 14:05:20,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-07 14:05:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.31055900621118) internal successors, (211), 165 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2021-11-07 14:05:20,674 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 17 [2021-11-07 14:05:20,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:20,675 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2021-11-07 14:05:20,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:20,675 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2021-11-07 14:05:20,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 14:05:20,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:20,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:20,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 14:05:20,676 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:20,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:20,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1032894378, now seen corresponding path program 1 times [2021-11-07 14:05:20,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:20,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793430836] [2021-11-07 14:05:20,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:20,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:05:20,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:20,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793430836] [2021-11-07 14:05:20,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793430836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:20,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:20,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:05:20,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988311614] [2021-11-07 14:05:20,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:20,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:05:20,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:20,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:05:20,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:20,753 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:20,800 INFO L93 Difference]: Finished difference Result 455 states and 589 transitions. [2021-11-07 14:05:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:05:20,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-07 14:05:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:20,837 INFO L225 Difference]: With dead ends: 455 [2021-11-07 14:05:20,837 INFO L226 Difference]: Without dead ends: 296 [2021-11-07 14:05:20,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.15ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:20,839 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 178 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.42ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.70ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:20,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 397 Invalid, 16 Unknown, 0 Unchecked, 2.42ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 25.70ms Time] [2021-11-07 14:05:20,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-07 14:05:20,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-11-07 14:05:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 291 states have (on average 1.3127147766323024) internal successors, (382), 295 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 382 transitions. [2021-11-07 14:05:20,877 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 382 transitions. Word has length 17 [2021-11-07 14:05:20,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:20,877 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 382 transitions. [2021-11-07 14:05:20,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:20,878 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 382 transitions. [2021-11-07 14:05:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 14:05:20,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:20,879 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] [2021-11-07 14:05:20,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 14:05:20,879 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:20,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:20,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1262223031, now seen corresponding path program 1 times [2021-11-07 14:05:20,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:20,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383863959] [2021-11-07 14:05:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:20,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:05:20,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:20,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383863959] [2021-11-07 14:05:20,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383863959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:20,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:20,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 14:05:20,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65930750] [2021-11-07 14:05:20,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:20,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 14:05:20,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 14:05:20,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:05:20,972 INFO L87 Difference]: Start difference. First operand 296 states and 382 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:21,047 INFO L93 Difference]: Finished difference Result 750 states and 965 transitions. [2021-11-07 14:05:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 14:05:21,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-07 14:05:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:21,051 INFO L225 Difference]: With dead ends: 750 [2021-11-07 14:05:21,051 INFO L226 Difference]: Without dead ends: 461 [2021-11-07 14:05:21,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.97ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:05:21,058 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 606 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.80ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.99ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:21,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 844 Invalid, 24 Unknown, 0 Unchecked, 4.80ms Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 30.99ms Time] [2021-11-07 14:05:21,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-07 14:05:21,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 299. [2021-11-07 14:05:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.3061224489795917) internal successors, (384), 298 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 384 transitions. [2021-11-07 14:05:21,091 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 384 transitions. Word has length 29 [2021-11-07 14:05:21,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:21,091 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 384 transitions. [2021-11-07 14:05:21,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,094 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 384 transitions. [2021-11-07 14:05:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 14:05:21,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:21,098 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] [2021-11-07 14:05:21,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 14:05:21,099 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:21,100 INFO L85 PathProgramCache]: Analyzing trace with hash 512843913, now seen corresponding path program 1 times [2021-11-07 14:05:21,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:21,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559308461] [2021-11-07 14:05:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:21,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:05:21,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:21,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559308461] [2021-11-07 14:05:21,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559308461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:21,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:21,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:05:21,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601520845] [2021-11-07 14:05:21,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:21,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:05:21,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:21,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:05:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:21,187 INFO L87 Difference]: Start difference. First operand 299 states and 384 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:21,233 INFO L93 Difference]: Finished difference Result 881 states and 1137 transitions. [2021-11-07 14:05:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:05:21,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-07 14:05:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:21,236 INFO L225 Difference]: With dead ends: 881 [2021-11-07 14:05:21,236 INFO L226 Difference]: Without dead ends: 589 [2021-11-07 14:05:21,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:21,241 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 180 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.53ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:21,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 402 Invalid, 14 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 19.53ms Time] [2021-11-07 14:05:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-11-07 14:05:21,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 577. [2021-11-07 14:05:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 572 states have (on average 1.3041958041958042) internal successors, (746), 576 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 746 transitions. [2021-11-07 14:05:21,268 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 746 transitions. Word has length 29 [2021-11-07 14:05:21,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:21,269 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 746 transitions. [2021-11-07 14:05:21,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,269 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 746 transitions. [2021-11-07 14:05:21,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 14:05:21,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:21,271 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] [2021-11-07 14:05:21,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 14:05:21,272 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:21,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:21,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1281701350, now seen corresponding path program 1 times [2021-11-07 14:05:21,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:21,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070892504] [2021-11-07 14:05:21,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:21,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:05:21,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:21,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070892504] [2021-11-07 14:05:21,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070892504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:21,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:21,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:05:21,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812762921] [2021-11-07 14:05:21,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:21,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:05:21,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:21,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:05:21,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:21,387 INFO L87 Difference]: Start difference. First operand 577 states and 746 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:21,400 INFO L93 Difference]: Finished difference Result 577 states and 746 transitions. [2021-11-07 14:05:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:05:21,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-07 14:05:21,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:21,403 INFO L225 Difference]: With dead ends: 577 [2021-11-07 14:05:21,404 INFO L226 Difference]: Without dead ends: 575 [2021-11-07 14:05:21,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:21,405 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 181 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.85ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:21,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 208 Invalid, 1 Unknown, 0 Unchecked, 0.48ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.85ms Time] [2021-11-07 14:05:21,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-11-07 14:05:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2021-11-07 14:05:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 571 states have (on average 1.3029772329246936) internal successors, (744), 574 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 744 transitions. [2021-11-07 14:05:21,424 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 744 transitions. Word has length 30 [2021-11-07 14:05:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:21,424 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 744 transitions. [2021-11-07 14:05:21,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 744 transitions. [2021-11-07 14:05:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 14:05:21,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:21,429 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] [2021-11-07 14:05:21,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 14:05:21,429 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:21,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:21,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1078029645, now seen corresponding path program 1 times [2021-11-07 14:05:21,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:21,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244636574] [2021-11-07 14:05:21,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:21,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:05:21,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:21,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244636574] [2021-11-07 14:05:21,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244636574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:21,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:21,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:05:21,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370166720] [2021-11-07 14:05:21,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:21,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:05:21,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:21,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:05:21,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:21,517 INFO L87 Difference]: Start difference. First operand 575 states and 744 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:21,532 INFO L93 Difference]: Finished difference Result 575 states and 744 transitions. [2021-11-07 14:05:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:05:21,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-07 14:05:21,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:21,534 INFO L225 Difference]: With dead ends: 575 [2021-11-07 14:05:21,534 INFO L226 Difference]: Without dead ends: 573 [2021-11-07 14:05:21,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:21,535 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.66ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:21,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 206 Invalid, 1 Unknown, 0 Unchecked, 0.47ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.66ms Time] [2021-11-07 14:05:21,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-07 14:05:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2021-11-07 14:05:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 570 states have (on average 1.3017543859649123) internal successors, (742), 572 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 742 transitions. [2021-11-07 14:05:21,552 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 742 transitions. Word has length 31 [2021-11-07 14:05:21,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:21,553 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 742 transitions. [2021-11-07 14:05:21,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,553 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 742 transitions. [2021-11-07 14:05:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 14:05:21,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:21,554 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] [2021-11-07 14:05:21,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 14:05:21,554 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:21,554 INFO L85 PathProgramCache]: Analyzing trace with hash 940825924, now seen corresponding path program 1 times [2021-11-07 14:05:21,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:21,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086715300] [2021-11-07 14:05:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:21,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:21,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:05:21,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:21,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086715300] [2021-11-07 14:05:21,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086715300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:21,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:21,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:05:21,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482916755] [2021-11-07 14:05:21,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:21,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:05:21,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:21,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:05:21,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:21,601 INFO L87 Difference]: Start difference. First operand 573 states and 742 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:21,617 INFO L93 Difference]: Finished difference Result 573 states and 742 transitions. [2021-11-07 14:05:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:05:21,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-07 14:05:21,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:21,620 INFO L225 Difference]: With dead ends: 573 [2021-11-07 14:05:21,620 INFO L226 Difference]: Without dead ends: 571 [2021-11-07 14:05:21,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:21,621 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.62ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:21,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 204 Invalid, 1 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.62ms Time] [2021-11-07 14:05:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-07 14:05:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-11-07 14:05:21,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 569 states have (on average 1.3005272407732864) internal successors, (740), 570 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 740 transitions. [2021-11-07 14:05:21,639 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 740 transitions. Word has length 32 [2021-11-07 14:05:21,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:21,639 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 740 transitions. [2021-11-07 14:05:21,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 740 transitions. [2021-11-07 14:05:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 14:05:21,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:21,640 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] [2021-11-07 14:05:21,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 14:05:21,641 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:21,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash -899160867, now seen corresponding path program 1 times [2021-11-07 14:05:21,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:21,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908894219] [2021-11-07 14:05:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:21,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:21,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:05:21,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:21,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908894219] [2021-11-07 14:05:21,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908894219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:21,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:21,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:05:21,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044987179] [2021-11-07 14:05:21,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:21,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:05:21,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:21,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:05:21,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:21,701 INFO L87 Difference]: Start difference. First operand 571 states and 740 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 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) [2021-11-07 14:05:21,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:21,716 INFO L93 Difference]: Finished difference Result 571 states and 740 transitions. [2021-11-07 14:05:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:05:21,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 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 [2021-11-07 14:05:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:21,718 INFO L225 Difference]: With dead ends: 571 [2021-11-07 14:05:21,718 INFO L226 Difference]: Without dead ends: 562 [2021-11-07 14:05:21,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:21,719 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 172 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:21,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 14:05:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-07 14:05:21,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-11-07 14:05:21,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 1.2994652406417113) internal successors, (729), 561 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 729 transitions. [2021-11-07 14:05:21,746 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 729 transitions. Word has length 33 [2021-11-07 14:05:21,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:21,748 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 729 transitions. [2021-11-07 14:05:21,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 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) [2021-11-07 14:05:21,748 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 729 transitions. [2021-11-07 14:05:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 14:05:21,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:21,751 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:21,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 14:05:21,751 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1288304928, now seen corresponding path program 1 times [2021-11-07 14:05:21,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:21,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691747737] [2021-11-07 14:05:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:21,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:21,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:05:21,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:21,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691747737] [2021-11-07 14:05:21,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691747737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:21,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:21,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:05:21,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387256277] [2021-11-07 14:05:21,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:21,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:05:21,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:05:21,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:21,834 INFO L87 Difference]: Start difference. First operand 562 states and 729 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:21,871 INFO L93 Difference]: Finished difference Result 1175 states and 1533 transitions. [2021-11-07 14:05:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:05:21,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-07 14:05:21,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:21,874 INFO L225 Difference]: With dead ends: 1175 [2021-11-07 14:05:21,874 INFO L226 Difference]: Without dead ends: 620 [2021-11-07 14:05:21,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:05:21,879 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 26 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.79ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:21,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 383 Invalid, 12 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 16.79ms Time] [2021-11-07 14:05:21,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-11-07 14:05:21,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 612. [2021-11-07 14:05:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.309328968903437) internal successors, (800), 611 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 800 transitions. [2021-11-07 14:05:21,922 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 800 transitions. Word has length 86 [2021-11-07 14:05:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:21,922 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 800 transitions. [2021-11-07 14:05:21,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 800 transitions. [2021-11-07 14:05:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 14:05:21,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:21,924 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:21,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 14:05:21,924 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1355240599, now seen corresponding path program 1 times [2021-11-07 14:05:21,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:21,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160818680] [2021-11-07 14:05:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:21,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:05:21,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:21,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160818680] [2021-11-07 14:05:21,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160818680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:21,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:21,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 14:05:21,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358984694] [2021-11-07 14:05:21,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:21,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 14:05:21,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:21,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 14:05:21,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:05:21,984 INFO L87 Difference]: Start difference. First operand 612 states and 800 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:22,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:22,046 INFO L93 Difference]: Finished difference Result 1880 states and 2484 transitions. [2021-11-07 14:05:22,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 14:05:22,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 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 94 [2021-11-07 14:05:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:22,051 INFO L225 Difference]: With dead ends: 1880 [2021-11-07 14:05:22,051 INFO L226 Difference]: Without dead ends: 1275 [2021-11-07 14:05:22,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.65ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:05:22,052 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 402 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.74ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.94ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:22,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 1053 Invalid, 18 Unknown, 0 Unchecked, 1.74ms Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 12.94ms Time] [2021-11-07 14:05:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-11-07 14:05:22,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 624. [2021-11-07 14:05:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 1.303370786516854) internal successors, (812), 623 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 812 transitions. [2021-11-07 14:05:22,080 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 812 transitions. Word has length 94 [2021-11-07 14:05:22,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:22,081 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 812 transitions. [2021-11-07 14:05:22,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:22,081 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 812 transitions. [2021-11-07 14:05:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 14:05:22,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:22,082 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:22,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 14:05:22,083 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:22,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:22,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1473601232, now seen corresponding path program 1 times [2021-11-07 14:05:22,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:22,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796868621] [2021-11-07 14:05:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:22,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:05:22,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:22,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796868621] [2021-11-07 14:05:22,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796868621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:22,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:22,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:05:22,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118669910] [2021-11-07 14:05:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:22,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:05:22,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:05:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:05:22,164 INFO L87 Difference]: Start difference. First operand 624 states and 812 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:22,244 INFO L93 Difference]: Finished difference Result 1694 states and 2206 transitions. [2021-11-07 14:05:22,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:05:22,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 14:05:22,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:22,248 INFO L225 Difference]: With dead ends: 1694 [2021-11-07 14:05:22,248 INFO L226 Difference]: Without dead ends: 1069 [2021-11-07 14:05:22,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:05:22,250 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 136 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.09ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.77ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:22,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 675 Invalid, 34 Unknown, 0 Unchecked, 1.09ms Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 21.77ms Time] [2021-11-07 14:05:22,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-07 14:05:22,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 624. [2021-11-07 14:05:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 1.2969502407704654) internal successors, (808), 623 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 808 transitions. [2021-11-07 14:05:22,279 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 808 transitions. Word has length 96 [2021-11-07 14:05:22,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:22,279 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 808 transitions. [2021-11-07 14:05:22,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:22,279 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 808 transitions. [2021-11-07 14:05:22,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 14:05:22,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:22,280 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:22,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 14:05:22,281 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:22,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:22,281 INFO L85 PathProgramCache]: Analyzing trace with hash -369507124, now seen corresponding path program 1 times [2021-11-07 14:05:22,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:22,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725235350] [2021-11-07 14:05:22,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:22,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:05:22,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:22,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725235350] [2021-11-07 14:05:22,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725235350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:22,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:22,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 14:05:22,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104447642] [2021-11-07 14:05:22,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:22,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 14:05:22,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:22,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 14:05:22,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 14:05:22,402 INFO L87 Difference]: Start difference. First operand 624 states and 808 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:22,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:22,677 INFO L93 Difference]: Finished difference Result 2276 states and 2960 transitions. [2021-11-07 14:05:22,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 14:05:22,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-07 14:05:22,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:22,683 INFO L225 Difference]: With dead ends: 2276 [2021-11-07 14:05:22,683 INFO L226 Difference]: Without dead ends: 1659 [2021-11-07 14:05:22,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 117.68ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-11-07 14:05:22,685 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 943 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.92ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.02ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:22,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 1899 Invalid, 131 Unknown, 0 Unchecked, 3.92ms Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 90.02ms Time] [2021-11-07 14:05:22,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2021-11-07 14:05:22,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 648. [2021-11-07 14:05:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 1.285935085007728) internal successors, (832), 647 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 832 transitions. [2021-11-07 14:05:22,725 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 832 transitions. Word has length 98 [2021-11-07 14:05:22,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:22,725 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 832 transitions. [2021-11-07 14:05:22,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:22,726 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 832 transitions. [2021-11-07 14:05:22,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 14:05:22,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:22,727 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:22,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 14:05:22,727 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:22,728 INFO L85 PathProgramCache]: Analyzing trace with hash -698583888, now seen corresponding path program 1 times [2021-11-07 14:05:22,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:22,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785955658] [2021-11-07 14:05:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:22,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:05:22,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:22,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785955658] [2021-11-07 14:05:22,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785955658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:22,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:22,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 14:05:22,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633727343] [2021-11-07 14:05:22,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:22,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 14:05:22,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:22,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 14:05:22,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:05:22,886 INFO L87 Difference]: Start difference. First operand 648 states and 832 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:23,178 INFO L93 Difference]: Finished difference Result 2750 states and 3578 transitions. [2021-11-07 14:05:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 14:05:23,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-07 14:05:23,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:23,184 INFO L225 Difference]: With dead ends: 2750 [2021-11-07 14:05:23,184 INFO L226 Difference]: Without dead ends: 2109 [2021-11-07 14:05:23,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 120.68ms TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-07 14:05:23,187 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 1107 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.82ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.21ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:23,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 1811 Invalid, 111 Unknown, 0 Unchecked, 3.82ms Time], IncrementalHoareTripleChecker [10 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 107.21ms Time] [2021-11-07 14:05:23,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2021-11-07 14:05:23,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 676. [2021-11-07 14:05:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 1.28) internal successors, (864), 675 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 864 transitions. [2021-11-07 14:05:23,239 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 864 transitions. Word has length 100 [2021-11-07 14:05:23,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:23,239 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 864 transitions. [2021-11-07 14:05:23,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 864 transitions. [2021-11-07 14:05:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 14:05:23,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:23,241 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:23,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 14:05:23,241 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:23,242 INFO L85 PathProgramCache]: Analyzing trace with hash 777867468, now seen corresponding path program 1 times [2021-11-07 14:05:23,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:23,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575951517] [2021-11-07 14:05:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:23,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:05:23,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:23,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575951517] [2021-11-07 14:05:23,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575951517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:23,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:23,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:05:23,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611719442] [2021-11-07 14:05:23,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:23,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:05:23,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:23,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:05:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:05:23,363 INFO L87 Difference]: Start difference. First operand 676 states and 864 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:23,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:23,553 INFO L93 Difference]: Finished difference Result 2508 states and 3220 transitions. [2021-11-07 14:05:23,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 14:05:23,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-07 14:05:23,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:23,560 INFO L225 Difference]: With dead ends: 2508 [2021-11-07 14:05:23,560 INFO L226 Difference]: Without dead ends: 1839 [2021-11-07 14:05:23,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:05:23,562 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 395 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.75ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:23,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 928 Invalid, 48 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 81.75ms Time] [2021-11-07 14:05:23,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2021-11-07 14:05:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 692. [2021-11-07 14:05:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.2793053545586106) internal successors, (884), 691 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:23,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 884 transitions. [2021-11-07 14:05:23,614 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 884 transitions. Word has length 102 [2021-11-07 14:05:23,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:23,614 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 884 transitions. [2021-11-07 14:05:23,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:23,614 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 884 transitions. [2021-11-07 14:05:23,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 14:05:23,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:23,616 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:23,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 14:05:23,616 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:23,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:23,617 INFO L85 PathProgramCache]: Analyzing trace with hash -370954712, now seen corresponding path program 1 times [2021-11-07 14:05:23,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:23,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052457335] [2021-11-07 14:05:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:23,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:05:23,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:23,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052457335] [2021-11-07 14:05:23,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052457335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:23,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:23,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 14:05:23,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436128638] [2021-11-07 14:05:23,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:23,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 14:05:23,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:23,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 14:05:23,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:05:23,745 INFO L87 Difference]: Start difference. First operand 692 states and 884 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:23,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:23,905 INFO L93 Difference]: Finished difference Result 2488 states and 3188 transitions. [2021-11-07 14:05:23,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 14:05:23,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-07 14:05:23,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:23,911 INFO L225 Difference]: With dead ends: 2488 [2021-11-07 14:05:23,911 INFO L226 Difference]: Without dead ends: 1803 [2021-11-07 14:05:23,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.69ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:05:23,915 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 330 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.15ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.59ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:23,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 1287 Invalid, 58 Unknown, 0 Unchecked, 3.15ms Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 41.59ms Time] [2021-11-07 14:05:23,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2021-11-07 14:05:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 704. [2021-11-07 14:05:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.2745376955903271) internal successors, (896), 703 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:23,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 896 transitions. [2021-11-07 14:05:23,978 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 896 transitions. Word has length 104 [2021-11-07 14:05:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:23,978 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 896 transitions. [2021-11-07 14:05:23,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 896 transitions. [2021-11-07 14:05:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 14:05:23,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:23,980 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:23,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 14:05:23,980 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:23,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1848418332, now seen corresponding path program 1 times [2021-11-07 14:05:23,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:23,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084956231] [2021-11-07 14:05:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:23,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:05:24,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:24,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084956231] [2021-11-07 14:05:24,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084956231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:24,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:24,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 14:05:24,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28198119] [2021-11-07 14:05:24,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:24,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 14:05:24,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 14:05:24,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-07 14:05:24,197 INFO L87 Difference]: Start difference. First operand 704 states and 896 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:24,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:24,909 INFO L93 Difference]: Finished difference Result 2622 states and 3350 transitions. [2021-11-07 14:05:24,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 14:05:24,909 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 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 106 [2021-11-07 14:05:24,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:24,914 INFO L225 Difference]: With dead ends: 2622 [2021-11-07 14:05:24,915 INFO L226 Difference]: Without dead ends: 1925 [2021-11-07 14:05:24,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 315.80ms TimeCoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2021-11-07 14:05:24,916 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 1812 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 197.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.57ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 240.45ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:24,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1812 Valid, 3555 Invalid, 357 Unknown, 0 Unchecked, 9.57ms Time], IncrementalHoareTripleChecker [27 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 240.45ms Time] [2021-11-07 14:05:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2021-11-07 14:05:24,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 704. [2021-11-07 14:05:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.271692745376956) internal successors, (894), 703 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 894 transitions. [2021-11-07 14:05:24,978 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 894 transitions. Word has length 106 [2021-11-07 14:05:24,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:24,978 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 894 transitions. [2021-11-07 14:05:24,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 894 transitions. [2021-11-07 14:05:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 14:05:24,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:24,979 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:24,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 14:05:24,980 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:24,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:24,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2119216531, now seen corresponding path program 1 times [2021-11-07 14:05:24,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:24,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365280606] [2021-11-07 14:05:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:24,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:05:25,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:25,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365280606] [2021-11-07 14:05:25,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365280606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:25,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:05:25,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:05:25,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322125981] [2021-11-07 14:05:25,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:25,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:05:25,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:25,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:05:25,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:05:25,133 INFO L87 Difference]: Start difference. First operand 704 states and 894 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:25,298 INFO L93 Difference]: Finished difference Result 2303 states and 2941 transitions. [2021-11-07 14:05:25,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 14:05:25,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 14:05:25,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:25,303 INFO L225 Difference]: With dead ends: 2303 [2021-11-07 14:05:25,303 INFO L226 Difference]: Without dead ends: 1606 [2021-11-07 14:05:25,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.02ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:05:25,305 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 262 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.29ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.66ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:25,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 638 Invalid, 13 Unknown, 0 Unchecked, 1.29ms Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 16.66ms Time] [2021-11-07 14:05:25,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-11-07 14:05:25,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 712. [2021-11-07 14:05:25,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.2686357243319268) internal successors, (902), 711 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 902 transitions. [2021-11-07 14:05:25,367 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 902 transitions. Word has length 122 [2021-11-07 14:05:25,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:25,368 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 902 transitions. [2021-11-07 14:05:25,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:25,368 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 902 transitions. [2021-11-07 14:05:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 14:05:25,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:25,369 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:25,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 14:05:25,369 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:25,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1474686187, now seen corresponding path program 1 times [2021-11-07 14:05:25,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:25,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548359436] [2021-11-07 14:05:25,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:25,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:05:25,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:25,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548359436] [2021-11-07 14:05:25,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548359436] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:05:25,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820314488] [2021-11-07 14:05:25,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:25,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:05:25,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:05:25,500 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) [2021-11-07 14:05:25,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 14:05:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:25,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 14:05:25,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:05:26,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:05:26,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:05:26,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820314488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:05:26,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:05:26,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-07 14:05:26,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191870524] [2021-11-07 14:05:26,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:05:26,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:05:26,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:05:26,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:05:26,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:05:26,096 INFO L87 Difference]: Start difference. First operand 712 states and 902 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:26,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:05:26,325 INFO L93 Difference]: Finished difference Result 2123 states and 2692 transitions. [2021-11-07 14:05:26,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:05:26,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 14:05:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:05:26,331 INFO L225 Difference]: With dead ends: 2123 [2021-11-07 14:05:26,331 INFO L226 Difference]: Without dead ends: 2118 [2021-11-07 14:05:26,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:05:26,332 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 272 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.54ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.37ms IncrementalHoareTripleChecker+Time [2021-11-07 14:05:26,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 754 Invalid, 21 Unknown, 0 Unchecked, 1.54ms Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 54.37ms Time] [2021-11-07 14:05:26,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2021-11-07 14:05:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 2068. [2021-11-07 14:05:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2067 states have (on average 1.2752781809385583) internal successors, (2636), 2067 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:26,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2636 transitions. [2021-11-07 14:05:26,512 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2636 transitions. Word has length 122 [2021-11-07 14:05:26,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:05:26,512 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 2636 transitions. [2021-11-07 14:05:26,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:05:26,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2636 transitions. [2021-11-07 14:05:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 14:05:26,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:05:26,515 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:05:26,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 14:05:26,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 14:05:26,735 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 14:05:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:05:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1423028811, now seen corresponding path program 1 times [2021-11-07 14:05:26,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:05:26,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987736030] [2021-11-07 14:05:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:26,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:05:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:05:27,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:05:27,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987736030] [2021-11-07 14:05:27,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987736030] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:05:27,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557337037] [2021-11-07 14:05:27,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:05:27,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:05:27,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:05:27,992 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) [2021-11-07 14:05:27,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 14:05:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:05:28,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-07 14:05:28,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:05:28,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 14:05:28,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-07 14:05:28,623 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 14:05:28,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 34 [2021-11-07 14:05:28,633 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-07 14:05:28,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-07 14:05:29,069 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-07 14:05:29,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 43 [2021-11-07 14:05:29,999 INFO L354 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-11-07 14:05:30,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 41 treesize of output 59 [2021-11-07 14:05:30,716 INFO L354 Elim1Store]: treesize reduction 40, result has 29.8 percent of original size [2021-11-07 14:05:30,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 50 [2021-11-07 14:05:45,667 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-07 14:05:45,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2021-11-07 14:05:45,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2021-11-07 14:05:46,088 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-07 14:05:46,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2021-11-07 14:05:46,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2021-11-07 14:05:46,159 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-07 14:05:46,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 68 [2021-11-07 14:05:46,174 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 14:05:46,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2021-11-07 14:05:54,726 WARN L227 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 1000 DAG size of output: 390 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-07 14:05:54,729 INFO L354 Elim1Store]: treesize reduction 6824, result has 10.2 percent of original size [2021-11-07 14:05:54,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 77 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 81 new quantified variables, introduced 159 case distinctions, treesize of input 17871223 treesize of output 7458945 [2021-11-07 14:06:15,606 WARN L227 SmtUtils]: Spent 20.86s on a formula simplification that was a NOOP. DAG size: 2503 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-07 14:06:37,815 WARN L227 SmtUtils]: Spent 22.18s on a formula simplification that was a NOOP. DAG size: 2497 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-07 14:07:58,536 WARN L227 SmtUtils]: Spent 1.29m on a formula simplification. DAG size of input: 3231 DAG size of output: 1110 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-07 14:07:58,540 INFO L354 Elim1Store]: treesize reduction 32874, result has 15.5 percent of original size [2021-11-07 14:07:58,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 77 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 385 case distinctions, treesize of input 7459546 treesize of output 7463579 [2021-11-07 14:08:20,355 WARN L227 SmtUtils]: Spent 21.79s on a formula simplification that was a NOOP. DAG size: 3407 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-07 14:08:42,422 WARN L227 SmtUtils]: Spent 21.81s on a formula simplification that was a NOOP. DAG size: 3403 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-07 14:13:04,589 WARN L227 SmtUtils]: Spent 3.81m on a formula simplification. DAG size of input: 1809 DAG size of output: 1809 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-07 14:15:23,935 WARN L227 SmtUtils]: Spent 20.32s on a formula simplification that was a NOOP. DAG size: 1788 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-07 14:16:14,838 WARN L227 SmtUtils]: Spent 10.28s on a formula simplification that was a NOOP. DAG size: 1779 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-07 14:16:54,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:16:54,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 73 [2021-11-07 14:16:54,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:16:54,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:16:54,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:16:54,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:16:54,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:16:54,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:16:54,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:16:54,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:16:54,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:16:54,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:16:54,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2021-11-07 14:18:06,058 WARN L227 SmtUtils]: Spent 21.25s on a formula simplification that was a NOOP. DAG size: 1788 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-07 14:18:56,950 WARN L227 SmtUtils]: Spent 10.19s on a formula simplification that was a NOOP. DAG size: 1779 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-07 14:19:37,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:19:37,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 73 [2021-11-07 14:19:38,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:19:38,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:19:38,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:19:38,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:19:38,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:19:38,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:19:38,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:19:38,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:19:38,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:19:38,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:19:38,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 Killed by 15