./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.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-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:22:17,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:22:17,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:22:17,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:22:17,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:22:17,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:22:17,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:22:17,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:22:17,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:22:17,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:22:17,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:22:17,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:22:17,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:22:17,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:22:17,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:22:17,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:22:17,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:22:17,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:22:17,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:22:17,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:22:17,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:22:17,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:22:17,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:22:17,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:22:17,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:22:17,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:22:17,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:22:17,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:22:17,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:22:17,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:22:17,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:22:17,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:22:17,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:22:17,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:22:17,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:22:17,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:22:17,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:22:17,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:22:17,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:22:17,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:22:17,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:22:17,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:22:17,338 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:22:17,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:22:17,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:22:17,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:22:17,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:22:17,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:22:17,341 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:22:17,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:22:17,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:22:17,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:22:17,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:22:17,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:22:17,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:22:17,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:22:17,343 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:22:17,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:22:17,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:22:17,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:22:17,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:22:17,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:22:17,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:22:17,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:22:17,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:22:17,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:22:17,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:22:17,345 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:22:17,345 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:22:17,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:22:17,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:22:17,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d [2021-11-07 13:22:17,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:22:17,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:22:17,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:22:17,550 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:22:17,555 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:22:17,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-07 13:22:17,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9250b1fa1/5dc52c8a11e9450b896dc5eabaddec04/FLAG612c4e422 [2021-11-07 13:22:18,225 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:22:18,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-07 13:22:18,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9250b1fa1/5dc52c8a11e9450b896dc5eabaddec04/FLAG612c4e422 [2021-11-07 13:22:18,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9250b1fa1/5dc52c8a11e9450b896dc5eabaddec04 [2021-11-07 13:22:18,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:22:18,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:22:18,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:22:18,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:22:18,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:22:18,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:22:18" (1/1) ... [2021-11-07 13:22:18,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5250c223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:18, skipping insertion in model container [2021-11-07 13:22:18,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:22:18" (1/1) ... [2021-11-07 13:22:18,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:22:18,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:22:18,894 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-07 13:22:18,894 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2021-11-07 13:22:19,050 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2021-11-07 13:22:19,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:22:19,441 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:22:19,519 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-07 13:22:19,519 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2021-11-07 13:22:19,537 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2021-11-07 13:22:19,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:22:19,750 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:22:19,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:19 WrapperNode [2021-11-07 13:22:19,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:22:19,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:22:19,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:22:19,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:22:19,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:19" (1/1) ... [2021-11-07 13:22:19,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:19" (1/1) ... [2021-11-07 13:22:19,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:22:19,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:22:19,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:22:19,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:22:19,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:19" (1/1) ... [2021-11-07 13:22:19,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:19" (1/1) ... [2021-11-07 13:22:19,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:19" (1/1) ... [2021-11-07 13:22:19,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:19" (1/1) ... [2021-11-07 13:22:20,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:19" (1/1) ... [2021-11-07 13:22:20,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:19" (1/1) ... [2021-11-07 13:22:20,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:19" (1/1) ... [2021-11-07 13:22:20,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:22:20,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:22:20,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:22:20,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:22:20,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:19" (1/1) ... [2021-11-07 13:22:20,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:22:20,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:22:20,217 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 13:22:20,241 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 13:22:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:22:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:22:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:22:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:22:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:22:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:22:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:22:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:22:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 13:22:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:22:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:22:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:22:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:22:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:22:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:22:20,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:22:24,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:22:24,954 INFO L299 CfgBuilder]: Removed 1042 assume(true) statements. [2021-11-07 13:22:24,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:24 BoogieIcfgContainer [2021-11-07 13:22:24,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:22:24,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:22:24,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:22:24,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:22:24,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:22:18" (1/3) ... [2021-11-07 13:22:24,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e30cbd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:24, skipping insertion in model container [2021-11-07 13:22:24,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:22:19" (2/3) ... [2021-11-07 13:22:24,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e30cbd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:24, skipping insertion in model container [2021-11-07 13:22:24,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:24" (3/3) ... [2021-11-07 13:22:24,965 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-07 13:22:24,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:22:24,970 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 13:22:25,015 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:22:25,020 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 13:22:25,021 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 13:22:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 835 states, 828 states have (on average 1.3973429951690821) internal successors, (1157), 834 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states 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 13:22:25,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 13:22:25,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:25,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:25,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:25,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1385985514, now seen corresponding path program 1 times [2021-11-07 13:22:25,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:25,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33612929] [2021-11-07 13:22:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:25,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:25,475 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 13:22:25,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:25,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33612929] [2021-11-07 13:22:25,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33612929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:25,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:25,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:22:25,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856637517] [2021-11-07 13:22:25,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:25,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 13:22:25,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:25,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 13:22:25,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 13:22:25,551 INFO L87 Difference]: Start difference. First operand has 835 states, 828 states have (on average 1.3973429951690821) internal successors, (1157), 834 states have internal predecessors, (1157), 0 states have call successors, (0), 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 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:22:25,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:25,655 INFO L93 Difference]: Finished difference Result 1667 states and 2311 transitions. [2021-11-07 13:22:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 13:22:25,658 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-07 13:22:25,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:25,678 INFO L225 Difference]: With dead ends: 1667 [2021-11-07 13:22:25,678 INFO L226 Difference]: Without dead ends: 823 [2021-11-07 13:22:25,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 13:22:25,699 INFO L933 BasicCegarLoop]: 1139 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, 1139 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:25,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 7.23ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 13:22:25,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-07 13:22:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 823. [2021-11-07 13:22:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 817 states have (on average 1.3733170134638923) internal successors, (1122), 822 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states 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 13:22:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1122 transitions. [2021-11-07 13:22:25,789 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1122 transitions. Word has length 62 [2021-11-07 13:22:25,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:25,789 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 1122 transitions. [2021-11-07 13:22:25,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:22:25,790 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1122 transitions. [2021-11-07 13:22:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 13:22:25,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:25,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:25,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:22:25,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:25,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:25,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1732742655, now seen corresponding path program 1 times [2021-11-07 13:22:25,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:25,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898431188] [2021-11-07 13:22:25,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:25,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:25,999 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 13:22:25,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:25,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898431188] [2021-11-07 13:22:26,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898431188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:26,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:26,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:22:26,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128751099] [2021-11-07 13:22:26,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:26,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:22:26,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:22:26,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:26,003 INFO L87 Difference]: Start difference. First operand 823 states and 1122 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 13:22:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:26,098 INFO L93 Difference]: Finished difference Result 1664 states and 2273 transitions. [2021-11-07 13:22:26,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:22:26,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-07 13:22:26,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:26,105 INFO L225 Difference]: With dead ends: 1664 [2021-11-07 13:22:26,105 INFO L226 Difference]: Without dead ends: 844 [2021-11-07 13:22:26,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:26,112 INFO L933 BasicCegarLoop]: 1121 mSDtfsCounter, 27 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.50ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.35ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:26,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 2222 Invalid, 20 Unknown, 0 Unchecked, 7.50ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 52.35ms Time] [2021-11-07 13:22:26,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-11-07 13:22:26,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 841. [2021-11-07 13:22:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 835 states have (on average 1.3760479041916167) internal successors, (1149), 840 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states 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 13:22:26,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1149 transitions. [2021-11-07 13:22:26,138 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1149 transitions. Word has length 63 [2021-11-07 13:22:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:26,141 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1149 transitions. [2021-11-07 13:22:26,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 13:22:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1149 transitions. [2021-11-07 13:22:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 13:22:26,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:26,147 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:26,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:22:26,147 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:26,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:26,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2128587854, now seen corresponding path program 1 times [2021-11-07 13:22:26,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:26,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744110699] [2021-11-07 13:22:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:26,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:22:26,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:26,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744110699] [2021-11-07 13:22:26,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744110699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:26,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:26,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:22:26,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549860178] [2021-11-07 13:22:26,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:26,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:22:26,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:22:26,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:22:26,353 INFO L87 Difference]: Start difference. First operand 841 states and 1149 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 13:22:26,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:26,608 INFO L93 Difference]: Finished difference Result 1683 states and 2300 transitions. [2021-11-07 13:22:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 13:22:26,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-07 13:22:26,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:26,612 INFO L225 Difference]: With dead ends: 1683 [2021-11-07 13:22:26,613 INFO L226 Difference]: Without dead ends: 839 [2021-11-07 13:22:26,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.35ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:22:26,615 INFO L933 BasicCegarLoop]: 1119 mSDtfsCounter, 7 mSDsluCounter, 3349 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.48ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:26,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4468 Invalid, 17 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 180.48ms Time] [2021-11-07 13:22:26,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-07 13:22:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2021-11-07 13:22:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 833 states have (on average 1.3733493397358945) internal successors, (1144), 838 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 13:22:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1144 transitions. [2021-11-07 13:22:26,633 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1144 transitions. Word has length 85 [2021-11-07 13:22:26,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:26,634 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1144 transitions. [2021-11-07 13:22:26,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 13:22:26,634 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1144 transitions. [2021-11-07 13:22:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 13:22:26,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:26,636 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:26,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:22:26,636 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:26,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:26,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1592921077, now seen corresponding path program 1 times [2021-11-07 13:22:26,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:26,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709777424] [2021-11-07 13:22:26,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:26,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:22:26,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:26,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709777424] [2021-11-07 13:22:26,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709777424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:26,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:26,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 13:22:26,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046734807] [2021-11-07 13:22:26,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:26,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 13:22:26,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 13:22:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 13:22:26,765 INFO L87 Difference]: Start difference. First operand 839 states and 1144 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 13:22:27,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:27,278 INFO L93 Difference]: Finished difference Result 1763 states and 2417 transitions. [2021-11-07 13:22:27,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 13:22:27,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-07 13:22:27,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:27,283 INFO L225 Difference]: With dead ends: 1763 [2021-11-07 13:22:27,283 INFO L226 Difference]: Without dead ends: 927 [2021-11-07 13:22:27,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 43.21ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-07 13:22:27,285 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 1309 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 386.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.38ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 435.20ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:27,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1309 Valid, 3313 Invalid, 122 Unknown, 0 Unchecked, 8.38ms Time], IncrementalHoareTripleChecker [42 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 435.20ms Time] [2021-11-07 13:22:27,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-07 13:22:27,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 899. [2021-11-07 13:22:27,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 893 states have (on average 1.3818589025755879) internal successors, (1234), 898 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 13:22:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1234 transitions. [2021-11-07 13:22:27,314 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1234 transitions. Word has length 85 [2021-11-07 13:22:27,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:27,314 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1234 transitions. [2021-11-07 13:22:27,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 13:22:27,315 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1234 transitions. [2021-11-07 13:22:27,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 13:22:27,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:27,317 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:27,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:22:27,317 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:27,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:27,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1295159176, now seen corresponding path program 1 times [2021-11-07 13:22:27,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:27,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135310722] [2021-11-07 13:22:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:27,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:22:27,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:27,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135310722] [2021-11-07 13:22:27,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135310722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:27,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:27,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:22:27,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969327687] [2021-11-07 13:22:27,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:27,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:22:27,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:27,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:22:27,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:27,405 INFO L87 Difference]: Start difference. First operand 899 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 13:22:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:27,465 INFO L93 Difference]: Finished difference Result 2689 states and 3693 transitions. [2021-11-07 13:22:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:22:27,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 99 [2021-11-07 13:22:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:27,473 INFO L225 Difference]: With dead ends: 2689 [2021-11-07 13:22:27,473 INFO L226 Difference]: Without dead ends: 1793 [2021-11-07 13:22:27,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:27,476 INFO L933 BasicCegarLoop]: 1185 mSDtfsCounter, 1109 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.52ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.94ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:27,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 2297 Invalid, 6 Unknown, 0 Unchecked, 4.52ms Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 4.94ms Time] [2021-11-07 13:22:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-11-07 13:22:27,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 900. [2021-11-07 13:22:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 894 states have (on average 1.3814317673378076) internal successors, (1235), 899 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states 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 13:22:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1235 transitions. [2021-11-07 13:22:27,546 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1235 transitions. Word has length 99 [2021-11-07 13:22:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:27,546 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 1235 transitions. [2021-11-07 13:22:27,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 13:22:27,547 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1235 transitions. [2021-11-07 13:22:27,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 13:22:27,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:27,554 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:27,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:22:27,554 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:27,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:27,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1712555782, now seen corresponding path program 1 times [2021-11-07 13:22:27,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:27,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228452279] [2021-11-07 13:22:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:27,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 13:22:27,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:27,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228452279] [2021-11-07 13:22:27,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228452279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:27,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:27,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:22:27,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160485424] [2021-11-07 13:22:27,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:27,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:22:27,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:27,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:22:27,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:22:27,675 INFO L87 Difference]: Start difference. First operand 900 states and 1235 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:22:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:27,785 INFO L93 Difference]: Finished difference Result 1980 states and 2733 transitions. [2021-11-07 13:22:27,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:22:27,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-07 13:22:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:27,791 INFO L225 Difference]: With dead ends: 1980 [2021-11-07 13:22:27,791 INFO L226 Difference]: Without dead ends: 1083 [2021-11-07 13:22:27,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:22:27,793 INFO L933 BasicCegarLoop]: 1255 mSDtfsCounter, 142 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.57ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.44ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:27,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 3599 Invalid, 41 Unknown, 0 Unchecked, 7.57ms Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 44.44ms Time] [2021-11-07 13:22:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2021-11-07 13:22:27,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 904. [2021-11-07 13:22:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 898 states have (on average 1.3797327394209353) internal successors, (1239), 903 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states 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 13:22:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1239 transitions. [2021-11-07 13:22:27,832 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1239 transitions. Word has length 99 [2021-11-07 13:22:27,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:27,832 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1239 transitions. [2021-11-07 13:22:27,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:22:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1239 transitions. [2021-11-07 13:22:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 13:22:27,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:27,835 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:27,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:22:27,835 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:27,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1060503898, now seen corresponding path program 1 times [2021-11-07 13:22:27,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:27,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333421749] [2021-11-07 13:22:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:27,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 13:22:27,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:27,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333421749] [2021-11-07 13:22:27,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333421749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:27,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:27,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:22:27,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112493579] [2021-11-07 13:22:27,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:27,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:22:27,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:27,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:22:27,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:28,000 INFO L87 Difference]: Start difference. First operand 904 states and 1239 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:22:28,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:28,054 INFO L93 Difference]: Finished difference Result 1805 states and 2475 transitions. [2021-11-07 13:22:28,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:22:28,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 13:22:28,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:28,058 INFO L225 Difference]: With dead ends: 1805 [2021-11-07 13:22:28,058 INFO L226 Difference]: Without dead ends: 904 [2021-11-07 13:22:28,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:28,060 INFO L933 BasicCegarLoop]: 1097 mSDtfsCounter, 1027 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.31ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:28,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 1097 Invalid, 19 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 14.31ms Time] [2021-11-07 13:22:28,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-11-07 13:22:28,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2021-11-07 13:22:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 898 states have (on average 1.3652561247216035) internal successors, (1226), 903 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states 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 13:22:28,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1226 transitions. [2021-11-07 13:22:28,092 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1226 transitions. Word has length 107 [2021-11-07 13:22:28,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:28,092 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1226 transitions. [2021-11-07 13:22:28,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:22:28,093 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1226 transitions. [2021-11-07 13:22:28,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 13:22:28,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:28,095 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:28,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 13:22:28,095 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:28,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:28,096 INFO L85 PathProgramCache]: Analyzing trace with hash -242855448, now seen corresponding path program 1 times [2021-11-07 13:22:28,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:28,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482812526] [2021-11-07 13:22:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:28,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 13:22:28,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:28,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482812526] [2021-11-07 13:22:28,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482812526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:28,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:28,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:22:28,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142272711] [2021-11-07 13:22:28,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:28,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:22:28,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:28,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:22:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:28,198 INFO L87 Difference]: Start difference. First operand 904 states and 1226 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:22:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:28,248 INFO L93 Difference]: Finished difference Result 1807 states and 2453 transitions. [2021-11-07 13:22:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:22:28,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 13:22:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:28,253 INFO L225 Difference]: With dead ends: 1807 [2021-11-07 13:22:28,253 INFO L226 Difference]: Without dead ends: 906 [2021-11-07 13:22:28,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:28,255 INFO L933 BasicCegarLoop]: 1105 mSDtfsCounter, 0 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.28ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.99ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:28,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2200 Invalid, 14 Unknown, 0 Unchecked, 3.28ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 11.99ms Time] [2021-11-07 13:22:28,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-11-07 13:22:28,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 906. [2021-11-07 13:22:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 900 states have (on average 1.3644444444444443) internal successors, (1228), 905 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states 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 13:22:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1228 transitions. [2021-11-07 13:22:28,311 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1228 transitions. Word has length 107 [2021-11-07 13:22:28,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:28,312 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1228 transitions. [2021-11-07 13:22:28,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:22:28,312 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1228 transitions. [2021-11-07 13:22:28,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 13:22:28,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:28,314 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:28,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 13:22:28,314 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash -635882458, now seen corresponding path program 1 times [2021-11-07 13:22:28,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:28,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132871377] [2021-11-07 13:22:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:28,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 13:22:28,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:28,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132871377] [2021-11-07 13:22:28,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132871377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:28,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:28,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:22:28,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368695103] [2021-11-07 13:22:28,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:28,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:22:28,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:28,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:22:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:28,429 INFO L87 Difference]: Start difference. First operand 906 states and 1228 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:22:28,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:28,706 INFO L93 Difference]: Finished difference Result 2622 states and 3570 transitions. [2021-11-07 13:22:28,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:22:28,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 13:22:28,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:28,714 INFO L225 Difference]: With dead ends: 2622 [2021-11-07 13:22:28,714 INFO L226 Difference]: Without dead ends: 1719 [2021-11-07 13:22:28,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:28,717 INFO L933 BasicCegarLoop]: 1983 mSDtfsCounter, 978 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 172.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.35ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 195.95ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:28,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 3048 Invalid, 76 Unknown, 0 Unchecked, 5.35ms Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 195.95ms Time] [2021-11-07 13:22:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2021-11-07 13:22:28,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 912. [2021-11-07 13:22:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 906 states have (on average 1.3620309050772628) internal successors, (1234), 911 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 13:22:28,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1234 transitions. [2021-11-07 13:22:28,760 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1234 transitions. Word has length 107 [2021-11-07 13:22:28,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:28,760 INFO L470 AbstractCegarLoop]: Abstraction has 912 states and 1234 transitions. [2021-11-07 13:22:28,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:22:28,760 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1234 transitions. [2021-11-07 13:22:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-07 13:22:28,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:28,762 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:28,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 13:22:28,763 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:28,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:28,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1658569363, now seen corresponding path program 1 times [2021-11-07 13:22:28,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:28,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333484950] [2021-11-07 13:22:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:28,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 13:22:28,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:28,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333484950] [2021-11-07 13:22:28,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333484950] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:22:28,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250646379] [2021-11-07 13:22:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:28,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:22:28,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:22:28,878 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 13:22:28,913 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 13:22:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:29,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 13:22:29,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:22:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 13:22:29,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:22:29,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250646379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:29,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:22:29,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 13:22:29,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624641665] [2021-11-07 13:22:29,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:29,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:22:29,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:29,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:22:29,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:22:29,499 INFO L87 Difference]: Start difference. First operand 912 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 13:22:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:29,642 INFO L93 Difference]: Finished difference Result 2604 states and 3552 transitions. [2021-11-07 13:22:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:22:29,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 111 [2021-11-07 13:22:29,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:29,649 INFO L225 Difference]: With dead ends: 2604 [2021-11-07 13:22:29,649 INFO L226 Difference]: Without dead ends: 1695 [2021-11-07 13:22:29,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.89ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:22:29,651 INFO L933 BasicCegarLoop]: 1963 mSDtfsCounter, 937 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.18ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.35ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:29,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 3034 Invalid, 58 Unknown, 0 Unchecked, 4.18ms Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 63.35ms Time] [2021-11-07 13:22:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2021-11-07 13:22:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 948. [2021-11-07 13:22:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 942 states have (on average 1.3609341825902335) internal successors, (1282), 947 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states 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 13:22:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1282 transitions. [2021-11-07 13:22:29,741 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1282 transitions. Word has length 111 [2021-11-07 13:22:29,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:29,741 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1282 transitions. [2021-11-07 13:22:29,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 13:22:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1282 transitions. [2021-11-07 13:22:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-07 13:22:29,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:29,743 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:29,774 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 13:22:29,967 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,SelfDestructingSolverStorable9 [2021-11-07 13:22:29,968 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:29,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1898073031, now seen corresponding path program 1 times [2021-11-07 13:22:29,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:29,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910886559] [2021-11-07 13:22:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:29,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 13:22:30,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:30,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910886559] [2021-11-07 13:22:30,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910886559] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:22:30,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092277109] [2021-11-07 13:22:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:30,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:22:30,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:22:30,090 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 13:22:30,091 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 13:22:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:30,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 13:22:30,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:22:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 13:22:30,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:22:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 13:22:30,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092277109] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:22:30,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:22:30,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 13:22:30,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351462570] [2021-11-07 13:22:30,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:22:30,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 13:22:30,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:30,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 13:22:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:22:30,979 INFO L87 Difference]: Start difference. First operand 948 states and 1282 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:22:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:31,844 INFO L93 Difference]: Finished difference Result 5151 states and 7035 transitions. [2021-11-07 13:22:31,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 13:22:31,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-07 13:22:31,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:31,860 INFO L225 Difference]: With dead ends: 5151 [2021-11-07 13:22:31,860 INFO L226 Difference]: Without dead ends: 4206 [2021-11-07 13:22:31,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 15.11ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:22:31,863 INFO L933 BasicCegarLoop]: 1945 mSDtfsCounter, 3906 mSDsluCounter, 7784 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 450.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3906 SdHoareTripleChecker+Valid, 9729 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.58ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 524.14ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:31,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3906 Valid, 9729 Invalid, 224 Unknown, 0 Unchecked, 12.58ms Time], IncrementalHoareTripleChecker [44 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 524.14ms Time] [2021-11-07 13:22:31,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2021-11-07 13:22:31,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 1182. [2021-11-07 13:22:31,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1176 states have (on average 1.3401360544217686) internal successors, (1576), 1181 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 13:22:31,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1576 transitions. [2021-11-07 13:22:31,937 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1576 transitions. Word has length 116 [2021-11-07 13:22:31,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:31,937 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 1576 transitions. [2021-11-07 13:22:31,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:22:31,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1576 transitions. [2021-11-07 13:22:31,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-07 13:22:31,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:31,940 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:31,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 13:22:32,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 13:22:32,162 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:32,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1895567890, now seen corresponding path program 1 times [2021-11-07 13:22:32,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:32,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946725902] [2021-11-07 13:22:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:32,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-07 13:22:32,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:32,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946725902] [2021-11-07 13:22:32,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946725902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:32,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:32,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:22:32,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760220534] [2021-11-07 13:22:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:32,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:22:32,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:22:32,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:22:32,261 INFO L87 Difference]: Start difference. First operand 1182 states and 1576 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 13:22:32,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:32,372 INFO L93 Difference]: Finished difference Result 2544 states and 3408 transitions. [2021-11-07 13:22:32,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:22:32,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-07 13:22:32,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:32,378 INFO L225 Difference]: With dead ends: 2544 [2021-11-07 13:22:32,378 INFO L226 Difference]: Without dead ends: 1365 [2021-11-07 13:22:32,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.75ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:22:32,380 INFO L933 BasicCegarLoop]: 1241 mSDtfsCounter, 138 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 3561 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.23ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.72ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:32,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 3561 Invalid, 41 Unknown, 0 Unchecked, 3.23ms Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 36.72ms Time] [2021-11-07 13:22:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-11-07 13:22:32,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1182. [2021-11-07 13:22:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1176 states have (on average 1.3401360544217686) internal successors, (1576), 1181 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 13:22:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1576 transitions. [2021-11-07 13:22:32,440 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1576 transitions. Word has length 128 [2021-11-07 13:22:32,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:32,440 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 1576 transitions. [2021-11-07 13:22:32,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 13:22:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1576 transitions. [2021-11-07 13:22:32,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 13:22:32,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:32,443 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:32,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 13:22:32,444 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:32,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2039175664, now seen corresponding path program 1 times [2021-11-07 13:22:32,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:32,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706660675] [2021-11-07 13:22:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:32,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 13:22:32,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:32,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706660675] [2021-11-07 13:22:32,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706660675] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:22:32,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469809917] [2021-11-07 13:22:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:32,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:22:32,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:22:32,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:22:32,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 13:22:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:33,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 13:22:33,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:22:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 13:22:33,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:22:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 13:22:33,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469809917] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:22:33,611 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:22:33,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2021-11-07 13:22:33,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769787530] [2021-11-07 13:22:33,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:22:33,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 13:22:33,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 13:22:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 13:22:33,617 INFO L87 Difference]: Start difference. First operand 1182 states and 1576 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 13:22:34,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:34,568 INFO L93 Difference]: Finished difference Result 6228 states and 8452 transitions. [2021-11-07 13:22:34,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 13:22:34,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 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 129 [2021-11-07 13:22:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:34,590 INFO L225 Difference]: With dead ends: 6228 [2021-11-07 13:22:34,590 INFO L226 Difference]: Without dead ends: 5049 [2021-11-07 13:22:34,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 19.57ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 13:22:34,594 INFO L933 BasicCegarLoop]: 1945 mSDtfsCounter, 7791 mSDsluCounter, 6811 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 465.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7791 SdHoareTripleChecker+Valid, 8756 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.63ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 538.52ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:34,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7791 Valid, 8756 Invalid, 226 Unknown, 0 Unchecked, 22.63ms Time], IncrementalHoareTripleChecker [52 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 538.52ms Time] [2021-11-07 13:22:34,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5049 states. [2021-11-07 13:22:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5049 to 1266. [2021-11-07 13:22:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1260 states have (on average 1.3365079365079364) internal successors, (1684), 1265 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states 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 13:22:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1684 transitions. [2021-11-07 13:22:34,692 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1684 transitions. Word has length 129 [2021-11-07 13:22:34,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:34,692 INFO L470 AbstractCegarLoop]: Abstraction has 1266 states and 1684 transitions. [2021-11-07 13:22:34,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 13:22:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1684 transitions. [2021-11-07 13:22:34,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 13:22:34,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:34,695 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:34,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 13:22:34,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:22:34,905 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:34,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:34,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1287416823, now seen corresponding path program 2 times [2021-11-07 13:22:34,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:34,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037582465] [2021-11-07 13:22:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:34,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 13:22:35,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:35,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037582465] [2021-11-07 13:22:35,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037582465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:35,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:35,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:22:35,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486889837] [2021-11-07 13:22:35,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:35,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:22:35,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:35,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:22:35,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:35,086 INFO L87 Difference]: Start difference. First operand 1266 states and 1684 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 13:22:35,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:35,153 INFO L93 Difference]: Finished difference Result 2533 states and 3371 transitions. [2021-11-07 13:22:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:22:35,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 133 [2021-11-07 13:22:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:35,159 INFO L225 Difference]: With dead ends: 2533 [2021-11-07 13:22:35,159 INFO L226 Difference]: Without dead ends: 1270 [2021-11-07 13:22:35,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:35,161 INFO L933 BasicCegarLoop]: 1105 mSDtfsCounter, 1 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.72ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.29ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:35,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2206 Invalid, 8 Unknown, 0 Unchecked, 1.72ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 8.29ms Time] [2021-11-07 13:22:35,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-11-07 13:22:35,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1270. [2021-11-07 13:22:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1264 states have (on average 1.3354430379746836) internal successors, (1688), 1269 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states 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 13:22:35,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1688 transitions. [2021-11-07 13:22:35,225 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1688 transitions. Word has length 133 [2021-11-07 13:22:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:35,226 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 1688 transitions. [2021-11-07 13:22:35,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 13:22:35,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1688 transitions. [2021-11-07 13:22:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-07 13:22:35,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:35,229 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:35,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 13:22:35,229 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:35,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:35,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1670612132, now seen corresponding path program 1 times [2021-11-07 13:22:35,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:35,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929216767] [2021-11-07 13:22:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:35,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 13:22:35,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:35,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929216767] [2021-11-07 13:22:35,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929216767] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:22:35,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292550894] [2021-11-07 13:22:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:35,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:22:35,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:22:35,362 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:22:35,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 13:22:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:36,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 13:22:36,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:22:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-07 13:22:36,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:22:36,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292550894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:36,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:22:36,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-07 13:22:36,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890617025] [2021-11-07 13:22:36,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:36,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:22:36,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:36,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:22:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 13:22:36,804 INFO L87 Difference]: Start difference. First operand 1270 states and 1688 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 13:22:36,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:36,966 INFO L93 Difference]: Finished difference Result 2951 states and 3955 transitions. [2021-11-07 13:22:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:22:36,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 135 [2021-11-07 13:22:36,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:36,974 INFO L225 Difference]: With dead ends: 2951 [2021-11-07 13:22:36,974 INFO L226 Difference]: Without dead ends: 1684 [2021-11-07 13:22:36,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.68ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:22:36,977 INFO L933 BasicCegarLoop]: 1353 mSDtfsCounter, 428 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 3783 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.43ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.98ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:36,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 3783 Invalid, 41 Unknown, 0 Unchecked, 4.43ms Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 58.98ms Time] [2021-11-07 13:22:36,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2021-11-07 13:22:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1274. [2021-11-07 13:22:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1268 states have (on average 1.334384858044164) internal successors, (1692), 1273 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states 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 13:22:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1692 transitions. [2021-11-07 13:22:37,054 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1692 transitions. Word has length 135 [2021-11-07 13:22:37,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:37,054 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 1692 transitions. [2021-11-07 13:22:37,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 13:22:37,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1692 transitions. [2021-11-07 13:22:37,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 13:22:37,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:37,058 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:37,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 13:22:37,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 13:22:37,283 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:37,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1480978942, now seen corresponding path program 1 times [2021-11-07 13:22:37,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:37,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087444264] [2021-11-07 13:22:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:37,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 13:22:37,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:37,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087444264] [2021-11-07 13:22:37,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087444264] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:22:37,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130885650] [2021-11-07 13:22:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:37,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:22:37,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:22:37,485 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:22:37,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 13:22:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:38,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 13:22:38,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:22:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-07 13:22:38,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:22:38,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130885650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:38,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:22:38,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 13:22:38,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931495561] [2021-11-07 13:22:38,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:38,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:22:38,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:38,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:22:38,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:22:38,738 INFO L87 Difference]: Start difference. First operand 1274 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 13:22:38,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:38,827 INFO L93 Difference]: Finished difference Result 2690 states and 3588 transitions. [2021-11-07 13:22:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:22:38,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 138 [2021-11-07 13:22:38,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:38,843 INFO L225 Difference]: With dead ends: 2690 [2021-11-07 13:22:38,848 INFO L226 Difference]: Without dead ends: 1419 [2021-11-07 13:22:38,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.34ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:22:38,851 INFO L933 BasicCegarLoop]: 1193 mSDtfsCounter, 88 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.91ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:38,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 2290 Invalid, 14 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 19.91ms Time] [2021-11-07 13:22:38,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-11-07 13:22:38,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1276. [2021-11-07 13:22:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1270 states have (on average 1.3338582677165354) internal successors, (1694), 1275 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states 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 13:22:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1694 transitions. [2021-11-07 13:22:38,924 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1694 transitions. Word has length 138 [2021-11-07 13:22:38,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:38,925 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1694 transitions. [2021-11-07 13:22:38,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 13:22:38,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1694 transitions. [2021-11-07 13:22:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 13:22:38,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:38,928 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:38,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 13:22:39,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-07 13:22:39,144 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:39,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1721218688, now seen corresponding path program 1 times [2021-11-07 13:22:39,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:39,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511810801] [2021-11-07 13:22:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:39,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 13:22:39,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:39,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511810801] [2021-11-07 13:22:39,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511810801] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:22:39,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056107484] [2021-11-07 13:22:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:39,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:22:39,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:22:39,321 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:22:39,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 13:22:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:40,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 13:22:40,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:22:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 13:22:40,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:22:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 13:22:40,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056107484] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:22:40,927 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:22:40,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 13:22:40,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181173588] [2021-11-07 13:22:40,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:22:40,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 13:22:40,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:40,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 13:22:40,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:22:40,930 INFO L87 Difference]: Start difference. First operand 1276 states and 1694 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 13:22:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:41,079 INFO L93 Difference]: Finished difference Result 2561 states and 3403 transitions. [2021-11-07 13:22:41,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 13:22:41,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 138 [2021-11-07 13:22:41,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:41,083 INFO L225 Difference]: With dead ends: 2561 [2021-11-07 13:22:41,084 INFO L226 Difference]: Without dead ends: 1288 [2021-11-07 13:22:41,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 24.72ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-07 13:22:41,086 INFO L933 BasicCegarLoop]: 1107 mSDtfsCounter, 7 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.32ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.54ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:41,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4414 Invalid, 35 Unknown, 0 Unchecked, 3.32ms Time], IncrementalHoareTripleChecker [13 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 32.54ms Time] [2021-11-07 13:22:41,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-11-07 13:22:41,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2021-11-07 13:22:41,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1282 states have (on average 1.3307332293291732) internal successors, (1706), 1287 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states 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 13:22:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1706 transitions. [2021-11-07 13:22:41,167 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1706 transitions. Word has length 138 [2021-11-07 13:22:41,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:41,167 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 1706 transitions. [2021-11-07 13:22:41,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 13:22:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1706 transitions. [2021-11-07 13:22:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 13:22:41,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:41,171 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:41,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 13:22:41,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 13:22:41,378 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:22:41,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1183496079, now seen corresponding path program 2 times [2021-11-07 13:22:41,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:41,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258744573] [2021-11-07 13:22:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:41,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 13:22:41,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:41,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258744573] [2021-11-07 13:22:41,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258744573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:22:41,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4372383] [2021-11-07 13:22:41,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 13:22:41,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:22:41,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:22:41,593 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:22:41,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 13:23:04,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 13:23:04,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 13:23:05,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 13:23:05,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:23:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 13:23:05,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:23:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 13:23:05,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4372383] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:23:05,617 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:23:05,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-07 13:23:05,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785233801] [2021-11-07 13:23:05,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:23:05,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 13:23:05,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:23:05,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 13:23:05,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-07 13:23:05,619 INFO L87 Difference]: Start difference. First operand 1288 states and 1706 transitions. Second operand has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:23:06,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:23:06,026 INFO L93 Difference]: Finished difference Result 2597 states and 3445 transitions. [2021-11-07 13:23:06,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 13:23:06,027 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-07 13:23:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:23:06,030 INFO L225 Difference]: With dead ends: 2597 [2021-11-07 13:23:06,030 INFO L226 Difference]: Without dead ends: 1312 [2021-11-07 13:23:06,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 281 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 272.60ms TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2021-11-07 13:23:06,033 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 29 mSDsluCounter, 7745 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.01ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.23ms IncrementalHoareTripleChecker+Time [2021-11-07 13:23:06,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 8858 Invalid, 123 Unknown, 0 Unchecked, 6.01ms Time], IncrementalHoareTripleChecker [43 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 140.23ms Time] [2021-11-07 13:23:06,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-11-07 13:23:06,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1312. [2021-11-07 13:23:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1306 states have (on average 1.324655436447167) internal successors, (1730), 1311 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states 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 13:23:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1730 transitions. [2021-11-07 13:23:06,105 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1730 transitions. Word has length 144 [2021-11-07 13:23:06,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:23:06,105 INFO L470 AbstractCegarLoop]: Abstraction has 1312 states and 1730 transitions. [2021-11-07 13:23:06,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:23:06,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1730 transitions. [2021-11-07 13:23:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 13:23:06,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:23:06,109 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:23:06,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 13:23:06,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:23:06,325 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:23:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:23:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash 740119533, now seen corresponding path program 3 times [2021-11-07 13:23:06,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:23:06,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745673513] [2021-11-07 13:23:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:23:06,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:23:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:23:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 13:23:06,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:23:06,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745673513] [2021-11-07 13:23:06,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745673513] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:23:06,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927521434] [2021-11-07 13:23:06,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 13:23:06,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:23:06,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:23:06,661 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:23:06,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 13:31:52,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-07 13:31:52,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 13:31:53,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-07 13:31:53,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:31:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-07 13:31:53,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:31:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 13:31:54,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927521434] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:31:54,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:31:54,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 26 [2021-11-07 13:31:54,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457647696] [2021-11-07 13:31:54,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:31:54,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 13:31:54,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:31:54,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 13:31:54,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2021-11-07 13:31:54,292 INFO L87 Difference]: Start difference. First operand 1312 states and 1730 transitions. Second operand has 26 states, 26 states have (on average 6.961538461538462) internal successors, (181), 26 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 13:32:11,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:32:11,292 INFO L93 Difference]: Finished difference Result 2807 states and 3727 transitions. [2021-11-07 13:32:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 13:32:11,293 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.961538461538462) internal successors, (181), 26 states have internal predecessors, (181), 0 states have call successors, (0), 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 156 [2021-11-07 13:32:11,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:32:11,296 INFO L225 Difference]: With dead ends: 2807 [2021-11-07 13:32:11,296 INFO L226 Difference]: Without dead ends: 1498 [2021-11-07 13:32:11,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 14533.37ms TimeCoverageRelationStatistics Valid=588, Invalid=1764, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 13:32:11,299 INFO L933 BasicCegarLoop]: 1198 mSDtfsCounter, 12226 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2705.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12226 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.29ms SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2779.89ms IncrementalHoareTripleChecker+Time [2021-11-07 13:32:11,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12226 Valid, 3410 Invalid, 521 Unknown, 0 Unchecked, 8.29ms Time], IncrementalHoareTripleChecker [231 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 2779.89ms Time] [2021-11-07 13:32:11,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-11-07 13:32:11,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1360. [2021-11-07 13:32:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1354 states have (on average 1.3146233382570163) internal successors, (1780), 1359 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states 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 13:32:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1780 transitions. [2021-11-07 13:32:11,467 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1780 transitions. Word has length 156 [2021-11-07 13:32:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:32:11,467 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 1780 transitions. [2021-11-07 13:32:11,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.961538461538462) internal successors, (181), 26 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 13:32:11,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1780 transitions. [2021-11-07 13:32:11,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-07 13:32:11,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:32:11,471 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:32:11,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 13:32:11,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:32:11,688 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:32:11,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:32:11,688 INFO L85 PathProgramCache]: Analyzing trace with hash 320373894, now seen corresponding path program 4 times [2021-11-07 13:32:11,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:32:11,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866257505] [2021-11-07 13:32:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:32:11,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:32:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:32:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-07 13:32:12,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:32:12,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866257505] [2021-11-07 13:32:12,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866257505] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:32:12,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235577842] [2021-11-07 13:32:12,538 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 13:32:12,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:32:12,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:32:12,544 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:32:12,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 13:32:20,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 13:32:20,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 13:32:20,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-07 13:32:20,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:32:49,469 WARN L227 SmtUtils]: Spent 28.86s on a formula simplification. DAG size of input: 2634 DAG size of output: 165 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-07 13:32:49,477 INFO L354 Elim1Store]: treesize reduction 42583, result has 0.8 percent of original size [2021-11-07 13:32:49,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 45 case distinctions, treesize of input 21255448 treesize of output 21122520 [2021-11-07 13:33:58,045 WARN L227 SmtUtils]: Spent 1.14m on a formula simplification that was a NOOP. DAG size: 691 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15