./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 173e3943 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-dev-173e394 [2021-11-06 14:49:40,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:49:40,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:49:40,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:49:40,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:49:40,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:49:40,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:49:40,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:49:40,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:49:40,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:49:40,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:49:40,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:49:40,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:49:40,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:49:40,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:49:40,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:49:40,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:49:40,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:49:40,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:49:40,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:49:40,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:49:40,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:49:40,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:49:40,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:49:40,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:49:40,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:49:40,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:49:40,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:49:40,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:49:40,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:49:40,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:49:40,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:49:40,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:49:40,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:49:40,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:49:40,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:49:40,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:49:40,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:49:40,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:49:40,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:49:40,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:49:40,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:49:40,976 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:49:40,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:49:40,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:49:40,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:49:40,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:49:40,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:49:40,978 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:49:40,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:49:40,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:49:40,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:49:40,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:49:40,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:49:40,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:49:40,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:49:40,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:49:40,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:49:40,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:49:40,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:49:40,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:49:40,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:49:40,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:49:40,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:49:40,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:49:40,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:49:40,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:49:40,981 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:49:40,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:49:40,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:49:40,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:49:40,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d [2021-11-06 14:49:41,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:49:41,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:49:41,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:49:41,183 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:49:41,194 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:49:41,194 INFO L432 ainManager$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 [2021-11-06 14:49:41,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b36ac91a/4dc2dec856714857ae96f81d9b38a069/FLAG79e41f5d4 [2021-11-06 14:49:41,769 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:49:41,769 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 [2021-11-06 14:49:41,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b36ac91a/4dc2dec856714857ae96f81d9b38a069/FLAG79e41f5d4 [2021-11-06 14:49:42,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b36ac91a/4dc2dec856714857ae96f81d9b38a069 [2021-11-06 14:49:42,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:49:42,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:49:42,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:49:42,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:49:42,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:49:42,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:49:42" (1/1) ... [2021-11-06 14:49:42,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56778ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42, skipping insertion in model container [2021-11-06 14:49:42,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:49:42" (1/1) ... [2021-11-06 14:49:42,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:49:42,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:49:42,433 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-06 14:49:42,433 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] [2021-11-06 14:49:42,524 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] [2021-11-06 14:49:42,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:49:42,685 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:49:42,722 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-06 14:49:42,722 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] [2021-11-06 14:49:42,727 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] [2021-11-06 14:49:42,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:49:42,843 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:49:42,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42 WrapperNode [2021-11-06 14:49:42,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:49:42,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:49:42,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:49:42,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:49:42,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42" (1/1) ... [2021-11-06 14:49:42,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42" (1/1) ... [2021-11-06 14:49:43,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:49:43,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:49:43,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:49:43,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:49:43,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42" (1/1) ... [2021-11-06 14:49:43,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42" (1/1) ... [2021-11-06 14:49:43,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42" (1/1) ... [2021-11-06 14:49:43,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42" (1/1) ... [2021-11-06 14:49:43,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42" (1/1) ... [2021-11-06 14:49:43,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42" (1/1) ... [2021-11-06 14:49:43,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42" (1/1) ... [2021-11-06 14:49:43,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:49:43,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:49:43,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:49:43,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:49:43,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42" (1/1) ... [2021-11-06 14:49:43,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:49:43,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:49:43,235 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) [2021-11-06 14:49:43,238 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 [2021-11-06 14:49:43,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:49:43,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:49:43,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:49:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:49:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:49:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:49:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:49:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:49:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 14:49:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:49:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:49:43,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:49:43,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:49:43,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:49:43,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:49:43,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:49:47,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:49:47,240 INFO L299 CfgBuilder]: Removed 1042 assume(true) statements. [2021-11-06 14:49:47,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:49:47 BoogieIcfgContainer [2021-11-06 14:49:47,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:49:47,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:49:47,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:49:47,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:49:47,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:49:42" (1/3) ... [2021-11-06 14:49:47,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1079e766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:49:47, skipping insertion in model container [2021-11-06 14:49:47,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:49:42" (2/3) ... [2021-11-06 14:49:47,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1079e766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:49:47, skipping insertion in model container [2021-11-06 14:49:47,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:49:47" (3/3) ... [2021-11-06 14:49:47,249 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 [2021-11-06 14:49:47,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:49:47,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-06 14:49:47,288 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:49:47,296 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 [2021-11-06 14:49:47,297 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-06 14:49:47,324 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) [2021-11-06 14:49:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 14:49:47,341 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:47,342 INFO L513 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] [2021-11-06 14:49:47,342 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)] === [2021-11-06 14:49:47,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:47,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1385985514, now seen corresponding path program 1 times [2021-11-06 14:49:47,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:47,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096144192] [2021-11-06 14:49:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:47,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:47,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:49:47,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:47,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096144192] [2021-11-06 14:49:47,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096144192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:47,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:49:47,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:49:47,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238766704] [2021-11-06 14:49:47,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 14:49:47,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:47,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 14:49:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 14:49:47,690 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) [2021-11-06 14:49:47,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:47,776 INFO L93 Difference]: Finished difference Result 1667 states and 2311 transitions. [2021-11-06 14:49:47,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 14:49:47,777 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 [2021-11-06 14:49:47,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:47,791 INFO L225 Difference]: With dead ends: 1667 [2021-11-06 14:49:47,791 INFO L226 Difference]: Without dead ends: 823 [2021-11-06 14:49:47,799 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 14:49:47,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-06 14:49:47,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 823. [2021-11-06 14:49:47,859 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) [2021-11-06 14:49:47,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1122 transitions. [2021-11-06 14:49:47,862 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1122 transitions. Word has length 62 [2021-11-06 14:49:47,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:47,862 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 1122 transitions. [2021-11-06 14:49:47,862 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) [2021-11-06 14:49:47,862 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1122 transitions. [2021-11-06 14:49:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 14:49:47,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:47,865 INFO L513 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] [2021-11-06 14:49:47,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:49:47,866 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)] === [2021-11-06 14:49:47,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:47,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1732742655, now seen corresponding path program 1 times [2021-11-06 14:49:47,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:47,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738741819] [2021-11-06 14:49:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:47,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:49:47,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:47,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738741819] [2021-11-06 14:49:47,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738741819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:47,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:49:47,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:49:47,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018127007] [2021-11-06 14:49:47,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:49:47,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:47,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:49:47,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:49:47,993 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) [2021-11-06 14:49:48,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:48,055 INFO L93 Difference]: Finished difference Result 1664 states and 2273 transitions. [2021-11-06 14:49:48,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:49:48,056 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 [2021-11-06 14:49:48,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:48,058 INFO L225 Difference]: With dead ends: 1664 [2021-11-06 14:49:48,058 INFO L226 Difference]: Without dead ends: 844 [2021-11-06 14:49:48,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:49:48,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-11-06 14:49:48,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 841. [2021-11-06 14:49:48,071 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) [2021-11-06 14:49:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1149 transitions. [2021-11-06 14:49:48,073 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1149 transitions. Word has length 63 [2021-11-06 14:49:48,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:48,074 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1149 transitions. [2021-11-06 14:49:48,074 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) [2021-11-06 14:49:48,074 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1149 transitions. [2021-11-06 14:49:48,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 14:49:48,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:48,078 INFO L513 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] [2021-11-06 14:49:48,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:49:48,079 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)] === [2021-11-06 14:49:48,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:48,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2128587854, now seen corresponding path program 1 times [2021-11-06 14:49:48,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:48,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785515037] [2021-11-06 14:49:48,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:48,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:49:48,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:48,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785515037] [2021-11-06 14:49:48,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785515037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:48,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:49:48,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:49:48,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904346049] [2021-11-06 14:49:48,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:49:48,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:48,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:49:48,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:49:48,198 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) [2021-11-06 14:49:48,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:48,350 INFO L93 Difference]: Finished difference Result 1683 states and 2300 transitions. [2021-11-06 14:49:48,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:49:48,351 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 [2021-11-06 14:49:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:48,355 INFO L225 Difference]: With dead ends: 1683 [2021-11-06 14:49:48,355 INFO L226 Difference]: Without dead ends: 839 [2021-11-06 14:49:48,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:49:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-06 14:49:48,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2021-11-06 14:49:48,368 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) [2021-11-06 14:49:48,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1144 transitions. [2021-11-06 14:49:48,370 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1144 transitions. Word has length 85 [2021-11-06 14:49:48,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:48,404 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1144 transitions. [2021-11-06 14:49:48,405 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) [2021-11-06 14:49:48,405 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1144 transitions. [2021-11-06 14:49:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 14:49:48,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:48,406 INFO L513 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] [2021-11-06 14:49:48,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:49:48,406 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)] === [2021-11-06 14:49:48,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:48,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1592921077, now seen corresponding path program 1 times [2021-11-06 14:49:48,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:48,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283604648] [2021-11-06 14:49:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:48,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:49:48,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:48,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283604648] [2021-11-06 14:49:48,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283604648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:48,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:49:48,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 14:49:48,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890241641] [2021-11-06 14:49:48,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:49:48,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:48,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:49:48,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:49:48,509 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) [2021-11-06 14:49:48,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:48,923 INFO L93 Difference]: Finished difference Result 1763 states and 2417 transitions. [2021-11-06 14:49:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 14:49:48,923 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 [2021-11-06 14:49:48,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:48,926 INFO L225 Difference]: With dead ends: 1763 [2021-11-06 14:49:48,926 INFO L226 Difference]: Without dead ends: 927 [2021-11-06 14:49:48,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:49:48,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-06 14:49:48,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 899. [2021-11-06 14:49:48,945 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) [2021-11-06 14:49:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1234 transitions. [2021-11-06 14:49:48,947 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1234 transitions. Word has length 85 [2021-11-06 14:49:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:48,947 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1234 transitions. [2021-11-06 14:49:48,947 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) [2021-11-06 14:49:48,947 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1234 transitions. [2021-11-06 14:49:48,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 14:49:48,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:48,949 INFO L513 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] [2021-11-06 14:49:48,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:49:48,949 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)] === [2021-11-06 14:49:48,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:48,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1295159176, now seen corresponding path program 1 times [2021-11-06 14:49:48,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:48,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899163609] [2021-11-06 14:49:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:48,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:49:49,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:49,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899163609] [2021-11-06 14:49:49,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899163609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:49,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:49:49,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:49:49,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541146572] [2021-11-06 14:49:49,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:49:49,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:49,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:49:49,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:49:49,017 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) [2021-11-06 14:49:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:49,062 INFO L93 Difference]: Finished difference Result 2689 states and 3693 transitions. [2021-11-06 14:49:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:49:49,062 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 [2021-11-06 14:49:49,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:49,068 INFO L225 Difference]: With dead ends: 2689 [2021-11-06 14:49:49,068 INFO L226 Difference]: Without dead ends: 1793 [2021-11-06 14:49:49,070 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:49:49,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-11-06 14:49:49,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 900. [2021-11-06 14:49:49,096 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) [2021-11-06 14:49:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1235 transitions. [2021-11-06 14:49:49,098 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1235 transitions. Word has length 99 [2021-11-06 14:49:49,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:49,098 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 1235 transitions. [2021-11-06 14:49:49,098 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) [2021-11-06 14:49:49,098 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1235 transitions. [2021-11-06 14:49:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 14:49:49,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:49,099 INFO L513 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] [2021-11-06 14:49:49,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:49:49,099 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)] === [2021-11-06 14:49:49,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:49,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1712555782, now seen corresponding path program 1 times [2021-11-06 14:49:49,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:49,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611381130] [2021-11-06 14:49:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:49,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:49:49,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:49,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611381130] [2021-11-06 14:49:49,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611381130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:49,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:49:49,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:49:49,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415278411] [2021-11-06 14:49:49,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:49:49,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:49,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:49:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:49:49,176 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) [2021-11-06 14:49:49,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:49,276 INFO L93 Difference]: Finished difference Result 1980 states and 2733 transitions. [2021-11-06 14:49:49,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:49:49,277 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 [2021-11-06 14:49:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:49,280 INFO L225 Difference]: With dead ends: 1980 [2021-11-06 14:49:49,280 INFO L226 Difference]: Without dead ends: 1083 [2021-11-06 14:49:49,282 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:49:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2021-11-06 14:49:49,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 904. [2021-11-06 14:49:49,305 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) [2021-11-06 14:49:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1239 transitions. [2021-11-06 14:49:49,307 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1239 transitions. Word has length 99 [2021-11-06 14:49:49,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:49,307 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1239 transitions. [2021-11-06 14:49:49,307 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) [2021-11-06 14:49:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1239 transitions. [2021-11-06 14:49:49,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 14:49:49,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:49,308 INFO L513 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] [2021-11-06 14:49:49,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:49:49,308 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)] === [2021-11-06 14:49:49,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:49,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1060503898, now seen corresponding path program 1 times [2021-11-06 14:49:49,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:49,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407713090] [2021-11-06 14:49:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:49,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:49:49,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:49,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407713090] [2021-11-06 14:49:49,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407713090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:49,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:49:49,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:49:49,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106303393] [2021-11-06 14:49:49,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:49:49,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:49:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:49:49,417 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) [2021-11-06 14:49:49,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:49,459 INFO L93 Difference]: Finished difference Result 1805 states and 2475 transitions. [2021-11-06 14:49:49,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:49:49,459 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 [2021-11-06 14:49:49,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:49,462 INFO L225 Difference]: With dead ends: 1805 [2021-11-06 14:49:49,462 INFO L226 Difference]: Without dead ends: 904 [2021-11-06 14:49:49,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:49:49,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-11-06 14:49:49,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2021-11-06 14:49:49,486 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) [2021-11-06 14:49:49,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1226 transitions. [2021-11-06 14:49:49,488 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1226 transitions. Word has length 107 [2021-11-06 14:49:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:49,488 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1226 transitions. [2021-11-06 14:49:49,488 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) [2021-11-06 14:49:49,489 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1226 transitions. [2021-11-06 14:49:49,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 14:49:49,489 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:49,490 INFO L513 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] [2021-11-06 14:49:49,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:49:49,490 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)] === [2021-11-06 14:49:49,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash -242855448, now seen corresponding path program 1 times [2021-11-06 14:49:49,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:49,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080124058] [2021-11-06 14:49:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:49,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:49:49,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:49,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080124058] [2021-11-06 14:49:49,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080124058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:49,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:49:49,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:49:49,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448544378] [2021-11-06 14:49:49,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:49:49,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:49:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:49:49,568 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) [2021-11-06 14:49:49,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:49,610 INFO L93 Difference]: Finished difference Result 1807 states and 2453 transitions. [2021-11-06 14:49:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:49:49,611 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 [2021-11-06 14:49:49,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:49,613 INFO L225 Difference]: With dead ends: 1807 [2021-11-06 14:49:49,614 INFO L226 Difference]: Without dead ends: 906 [2021-11-06 14:49:49,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:49:49,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-11-06 14:49:49,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 906. [2021-11-06 14:49:49,663 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) [2021-11-06 14:49:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1228 transitions. [2021-11-06 14:49:49,665 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1228 transitions. Word has length 107 [2021-11-06 14:49:49,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:49,665 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1228 transitions. [2021-11-06 14:49:49,665 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) [2021-11-06 14:49:49,665 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1228 transitions. [2021-11-06 14:49:49,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 14:49:49,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:49,666 INFO L513 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] [2021-11-06 14:49:49,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:49:49,666 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)] === [2021-11-06 14:49:49,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:49,667 INFO L85 PathProgramCache]: Analyzing trace with hash -635882458, now seen corresponding path program 1 times [2021-11-06 14:49:49,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:49,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490504069] [2021-11-06 14:49:49,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:49,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:49:49,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:49,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490504069] [2021-11-06 14:49:49,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490504069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:49,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:49:49,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:49:49,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564219589] [2021-11-06 14:49:49,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:49:49,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:49,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:49:49,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:49:49,744 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) [2021-11-06 14:49:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:49,963 INFO L93 Difference]: Finished difference Result 2622 states and 3570 transitions. [2021-11-06 14:49:49,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:49:49,964 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 [2021-11-06 14:49:49,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:49,969 INFO L225 Difference]: With dead ends: 2622 [2021-11-06 14:49:49,969 INFO L226 Difference]: Without dead ends: 1719 [2021-11-06 14:49:49,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:49:49,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2021-11-06 14:49:49,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 912. [2021-11-06 14:49:49,997 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) [2021-11-06 14:49:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1234 transitions. [2021-11-06 14:49:49,999 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1234 transitions. Word has length 107 [2021-11-06 14:49:49,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:49,999 INFO L470 AbstractCegarLoop]: Abstraction has 912 states and 1234 transitions. [2021-11-06 14:49:49,999 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) [2021-11-06 14:49:49,999 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1234 transitions. [2021-11-06 14:49:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-06 14:49:50,000 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:50,000 INFO L513 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] [2021-11-06 14:49:50,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 14:49:50,001 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)] === [2021-11-06 14:49:50,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:50,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1658569363, now seen corresponding path program 1 times [2021-11-06 14:49:50,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:50,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926022277] [2021-11-06 14:49:50,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:50,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:49:50,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:50,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926022277] [2021-11-06 14:49:50,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926022277] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:49:50,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179962407] [2021-11-06 14:49:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:50,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:49:50,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:49:50,094 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) [2021-11-06 14:49:50,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:49:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:50,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:49:50,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:49:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 14:49:50,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179962407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:50,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:49:50,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 14:49:50,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718589988] [2021-11-06 14:49:50,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:49:50,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:50,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:49:50,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:49:50,750 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) [2021-11-06 14:49:50,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:50,862 INFO L93 Difference]: Finished difference Result 2604 states and 3552 transitions. [2021-11-06 14:49:50,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:49:50,863 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 [2021-11-06 14:49:50,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:50,867 INFO L225 Difference]: With dead ends: 2604 [2021-11-06 14:49:50,867 INFO L226 Difference]: Without dead ends: 1695 [2021-11-06 14:49:50,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:49:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2021-11-06 14:49:50,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 948. [2021-11-06 14:49:50,900 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) [2021-11-06 14:49:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1282 transitions. [2021-11-06 14:49:50,902 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1282 transitions. Word has length 111 [2021-11-06 14:49:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:50,902 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1282 transitions. [2021-11-06 14:49:50,902 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) [2021-11-06 14:49:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1282 transitions. [2021-11-06 14:49:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 14:49:50,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:50,904 INFO L513 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] [2021-11-06 14:49:50,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 14:49:51,127 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 [2021-11-06 14:49:51,128 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)] === [2021-11-06 14:49:51,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:51,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1898073031, now seen corresponding path program 1 times [2021-11-06 14:49:51,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:51,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455499662] [2021-11-06 14:49:51,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:51,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:49:51,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:51,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455499662] [2021-11-06 14:49:51,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455499662] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:49:51,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317325135] [2021-11-06 14:49:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:51,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:49:51,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:49:51,236 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) [2021-11-06 14:49:51,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 14:49:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:51,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:49:51,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:49:51,986 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:49:51,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317325135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:49:51,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:49:51,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:49:51,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348198740] [2021-11-06 14:49:51,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:49:51,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:51,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:49:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:49:51,988 INFO L87 Difference]: Start difference. First operand 948 states and 1282 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:49:52,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:52,402 INFO L93 Difference]: Finished difference Result 3549 states and 4825 transitions. [2021-11-06 14:49:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:49:52,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 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 [2021-11-06 14:49:52,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:52,411 INFO L225 Difference]: With dead ends: 3549 [2021-11-06 14:49:52,411 INFO L226 Difference]: Without dead ends: 2604 [2021-11-06 14:49:52,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:49:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-11-06 14:49:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 1014. [2021-11-06 14:49:52,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 1008 states have (on average 1.3492063492063493) internal successors, (1360), 1013 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:49:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1360 transitions. [2021-11-06 14:49:52,462 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1360 transitions. Word has length 116 [2021-11-06 14:49:52,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:52,462 INFO L470 AbstractCegarLoop]: Abstraction has 1014 states and 1360 transitions. [2021-11-06 14:49:52,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:49:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1360 transitions. [2021-11-06 14:49:52,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-06 14:49:52,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:52,464 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:49:52,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 14:49:52,683 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 [2021-11-06 14:49:52,684 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)] === [2021-11-06 14:49:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:52,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1070580320, now seen corresponding path program 1 times [2021-11-06 14:49:52,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:52,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557613262] [2021-11-06 14:49:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:52,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-06 14:49:52,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:52,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557613262] [2021-11-06 14:49:52,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557613262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:52,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:49:52,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:49:52,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656952610] [2021-11-06 14:49:52,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:49:52,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:49:52,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:49:52,765 INFO L87 Difference]: Start difference. First operand 1014 states and 1360 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) [2021-11-06 14:49:52,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:52,847 INFO L93 Difference]: Finished difference Result 2208 states and 2976 transitions. [2021-11-06 14:49:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:49:52,848 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 120 [2021-11-06 14:49:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:52,851 INFO L225 Difference]: With dead ends: 2208 [2021-11-06 14:49:52,851 INFO L226 Difference]: Without dead ends: 1197 [2021-11-06 14:49:52,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:49:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-06 14:49:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1014. [2021-11-06 14:49:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 1008 states have (on average 1.3492063492063493) internal successors, (1360), 1013 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:49:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1360 transitions. [2021-11-06 14:49:52,892 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1360 transitions. Word has length 120 [2021-11-06 14:49:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:52,892 INFO L470 AbstractCegarLoop]: Abstraction has 1014 states and 1360 transitions. [2021-11-06 14:49:52,893 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) [2021-11-06 14:49:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1360 transitions. [2021-11-06 14:49:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-06 14:49:52,894 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:52,895 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:49:52,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 14:49:52,895 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)] === [2021-11-06 14:49:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash 719046718, now seen corresponding path program 1 times [2021-11-06 14:49:52,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:52,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172065675] [2021-11-06 14:49:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:52,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:53,042 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:49:53,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:53,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172065675] [2021-11-06 14:49:53,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172065675] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:49:53,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687284776] [2021-11-06 14:49:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:53,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:49:53,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:49:53,068 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) [2021-11-06 14:49:53,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 14:49:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:53,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 14:49:53,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:49:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:49:53,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687284776] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:49:53,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:49:53,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 14:49:53,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513261229] [2021-11-06 14:49:53,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:49:53,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:49:53,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:49:53,839 INFO L87 Difference]: Start difference. First operand 1014 states and 1360 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:49:54,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:54,351 INFO L93 Difference]: Finished difference Result 4458 states and 6050 transitions. [2021-11-06 14:49:54,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:49:54,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-06 14:49:54,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:54,363 INFO L225 Difference]: With dead ends: 4458 [2021-11-06 14:49:54,363 INFO L226 Difference]: Without dead ends: 3447 [2021-11-06 14:49:54,366 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:49:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-11-06 14:49:54,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 1098. [2021-11-06 14:49:54,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1092 states have (on average 1.3443223443223444) internal successors, (1468), 1097 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:49:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1468 transitions. [2021-11-06 14:49:54,417 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1468 transitions. Word has length 121 [2021-11-06 14:49:54,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:54,418 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 1468 transitions. [2021-11-06 14:49:54,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:49:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1468 transitions. [2021-11-06 14:49:54,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 14:49:54,420 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:54,420 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-06 14:49:54,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 14:49:54,636 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 [2021-11-06 14:49:54,637 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)] === [2021-11-06 14:49:54,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:54,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1324886871, now seen corresponding path program 2 times [2021-11-06 14:49:54,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:54,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234537210] [2021-11-06 14:49:54,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:54,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-06 14:49:54,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:54,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234537210] [2021-11-06 14:49:54,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234537210] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:49:54,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210633434] [2021-11-06 14:49:54,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:49:54,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:49:54,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:49:54,787 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) [2021-11-06 14:49:54,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 14:49:55,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 14:49:55,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:49:55,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:49:55,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:49:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 14:49:55,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210633434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:55,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:49:55,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-06 14:49:55,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397689980] [2021-11-06 14:49:55,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:49:55,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:55,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:49:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:49:55,784 INFO L87 Difference]: Start difference. First operand 1098 states and 1468 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) [2021-11-06 14:49:55,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:55,849 INFO L93 Difference]: Finished difference Result 2197 states and 2939 transitions. [2021-11-06 14:49:55,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:49:55,850 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 125 [2021-11-06 14:49:55,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:55,853 INFO L225 Difference]: With dead ends: 2197 [2021-11-06 14:49:55,853 INFO L226 Difference]: Without dead ends: 1102 [2021-11-06 14:49:55,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:49:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-06 14:49:55,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1102. [2021-11-06 14:49:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1096 states have (on average 1.3430656934306568) internal successors, (1472), 1101 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:49:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1472 transitions. [2021-11-06 14:49:55,894 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1472 transitions. Word has length 125 [2021-11-06 14:49:55,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:55,894 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1472 transitions. [2021-11-06 14:49:55,894 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) [2021-11-06 14:49:55,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1472 transitions. [2021-11-06 14:49:55,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 14:49:55,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:55,896 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:49:55,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 14:49:56,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:49:56,119 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)] === [2021-11-06 14:49:56,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash 935585522, now seen corresponding path program 1 times [2021-11-06 14:49:56,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:56,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879539139] [2021-11-06 14:49:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:56,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 14:49:56,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:56,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879539139] [2021-11-06 14:49:56,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879539139] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:49:56,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179468769] [2021-11-06 14:49:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:56,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:49:56,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:49:56,317 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) [2021-11-06 14:49:56,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 14:49:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:56,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 14:49:56,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:49:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 14:49:57,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179468769] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:49:57,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:49:57,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-06 14:49:57,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236217706] [2021-11-06 14:49:57,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:49:57,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:57,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:49:57,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:49:57,118 INFO L87 Difference]: Start difference. First operand 1102 states and 1472 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) [2021-11-06 14:49:57,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:57,802 INFO L93 Difference]: Finished difference Result 5409 states and 7329 transitions. [2021-11-06 14:49:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:49:57,803 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 127 [2021-11-06 14:49:57,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:57,830 INFO L225 Difference]: With dead ends: 5409 [2021-11-06 14:49:57,830 INFO L226 Difference]: Without dead ends: 4310 [2021-11-06 14:49:57,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:49:57,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4310 states. [2021-11-06 14:49:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4310 to 1186. [2021-11-06 14:49:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1180 states have (on average 1.3389830508474576) internal successors, (1580), 1185 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:49:57,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1580 transitions. [2021-11-06 14:49:57,979 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1580 transitions. Word has length 127 [2021-11-06 14:49:57,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:57,979 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 1580 transitions. [2021-11-06 14:49:57,979 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) [2021-11-06 14:49:57,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1580 transitions. [2021-11-06 14:49:57,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 14:49:57,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:57,986 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-11-06 14:49:58,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-06 14:49:58,206 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,SelfDestructingSolverStorable14 [2021-11-06 14:49:58,206 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)] === [2021-11-06 14:49:58,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:58,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1485426699, now seen corresponding path program 2 times [2021-11-06 14:49:58,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:58,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971896160] [2021-11-06 14:49:58,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:58,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 14:49:58,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:58,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971896160] [2021-11-06 14:49:58,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971896160] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:49:58,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600446104] [2021-11-06 14:49:58,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:49:58,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:49:58,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:49:58,400 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) [2021-11-06 14:49:58,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 14:49:59,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 14:49:59,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:49:59,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:49:59,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:49:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-06 14:49:59,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600446104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:49:59,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:49:59,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-06 14:49:59,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737526135] [2021-11-06 14:49:59,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:49:59,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:49:59,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:49:59,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:49:59,457 INFO L87 Difference]: Start difference. First operand 1186 states and 1580 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 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) [2021-11-06 14:49:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:49:59,516 INFO L93 Difference]: Finished difference Result 2514 states and 3364 transitions. [2021-11-06 14:49:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:49:59,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 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 131 [2021-11-06 14:49:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:49:59,520 INFO L225 Difference]: With dead ends: 2514 [2021-11-06 14:49:59,520 INFO L226 Difference]: Without dead ends: 1331 [2021-11-06 14:49:59,521 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:49:59,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2021-11-06 14:49:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1188. [2021-11-06 14:49:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1182 states have (on average 1.338409475465313) internal successors, (1582), 1187 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:49:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1582 transitions. [2021-11-06 14:49:59,562 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1582 transitions. Word has length 131 [2021-11-06 14:49:59,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:49:59,563 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 1582 transitions. [2021-11-06 14:49:59,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 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) [2021-11-06 14:49:59,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1582 transitions. [2021-11-06 14:49:59,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 14:49:59,565 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:49:59,565 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-11-06 14:49:59,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 14:49:59,780 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,SelfDestructingSolverStorable15 [2021-11-06 14:49:59,781 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)] === [2021-11-06 14:49:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:49:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1562327497, now seen corresponding path program 1 times [2021-11-06 14:49:59,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:49:59,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215219692] [2021-11-06 14:49:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:59,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:49:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:49:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 14:49:59,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:49:59,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215219692] [2021-11-06 14:49:59,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215219692] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:49:59,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647030817] [2021-11-06 14:49:59,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:49:59,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:49:59,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:49:59,907 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) [2021-11-06 14:49:59,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 14:50:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:00,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1747 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 14:50:00,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:50:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 14:50:00,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647030817] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:50:00,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:50:00,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-11-06 14:50:00,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144120441] [2021-11-06 14:50:00,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 14:50:00,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:00,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 14:50:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:50:00,732 INFO L87 Difference]: Start difference. First operand 1188 states and 1582 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:01,432 INFO L93 Difference]: Finished difference Result 6270 states and 8494 transitions. [2021-11-06 14:50:01,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 14:50:01,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 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 131 [2021-11-06 14:50:01,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:01,458 INFO L225 Difference]: With dead ends: 6270 [2021-11-06 14:50:01,458 INFO L226 Difference]: Without dead ends: 5085 [2021-11-06 14:50:01,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:50:01,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5085 states. [2021-11-06 14:50:01,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5085 to 1272. [2021-11-06 14:50:01,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1266 states have (on average 1.334913112164297) internal successors, (1690), 1271 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1690 transitions. [2021-11-06 14:50:01,541 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1690 transitions. Word has length 131 [2021-11-06 14:50:01,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:01,542 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 1690 transitions. [2021-11-06 14:50:01,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1690 transitions. [2021-11-06 14:50:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 14:50:01,547 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:01,547 INFO L513 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] [2021-11-06 14:50:01,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-06 14:50:01,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:50:01,763 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)] === [2021-11-06 14:50:01,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:01,764 INFO L85 PathProgramCache]: Analyzing trace with hash -406724766, now seen corresponding path program 2 times [2021-11-06 14:50:01,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:01,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597454479] [2021-11-06 14:50:01,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:01,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-06 14:50:01,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:01,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597454479] [2021-11-06 14:50:01,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597454479] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:50:01,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243190877] [2021-11-06 14:50:01,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:50:01,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:50:01,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:50:01,928 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) [2021-11-06 14:50:01,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 14:50:02,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 14:50:02,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:50:02,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 14:50:02,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:50:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-06 14:50:03,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243190877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:50:03,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:50:03,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-06 14:50:03,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881134455] [2021-11-06 14:50:03,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:50:03,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:03,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:50:03,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:50:03,166 INFO L87 Difference]: Start difference. First operand 1272 states and 1690 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) [2021-11-06 14:50:03,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:03,303 INFO L93 Difference]: Finished difference Result 2957 states and 3961 transitions. [2021-11-06 14:50:03,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:50:03,304 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 [2021-11-06 14:50:03,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:03,307 INFO L225 Difference]: With dead ends: 2957 [2021-11-06 14:50:03,307 INFO L226 Difference]: Without dead ends: 1688 [2021-11-06 14:50:03,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:50:03,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2021-11-06 14:50:03,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1276. [2021-11-06 14:50:03,368 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) [2021-11-06 14:50:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1694 transitions. [2021-11-06 14:50:03,370 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1694 transitions. Word has length 135 [2021-11-06 14:50:03,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:03,370 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1694 transitions. [2021-11-06 14:50:03,370 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) [2021-11-06 14:50:03,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1694 transitions. [2021-11-06 14:50:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 14:50:03,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:03,373 INFO L513 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] [2021-11-06 14:50:03,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 14:50:03,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-06 14:50:03,597 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)] === [2021-11-06 14:50:03,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1721218688, now seen corresponding path program 1 times [2021-11-06 14:50:03,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:03,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159818334] [2021-11-06 14:50:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:03,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-06 14:50:03,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:03,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159818334] [2021-11-06 14:50:03,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159818334] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:50:03,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29253575] [2021-11-06 14:50:03,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:03,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:50:03,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:50:03,736 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) [2021-11-06 14:50:03,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 14:50:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:05,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 14:50:05,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:50:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-06 14:50:05,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29253575] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:50:05,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:50:05,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:50:05,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671885473] [2021-11-06 14:50:05,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:50:05,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:05,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:50:05,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:50:05,575 INFO L87 Difference]: Start difference. First operand 1276 states and 1694 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:05,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:05,648 INFO L93 Difference]: Finished difference Result 2553 states and 3391 transitions. [2021-11-06 14:50:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:50:05,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 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 [2021-11-06 14:50:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:05,650 INFO L225 Difference]: With dead ends: 2553 [2021-11-06 14:50:05,650 INFO L226 Difference]: Without dead ends: 1280 [2021-11-06 14:50:05,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:50:05,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2021-11-06 14:50:05,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1280. [2021-11-06 14:50:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1274 states have (on average 1.3328100470957613) internal successors, (1698), 1279 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1698 transitions. [2021-11-06 14:50:05,703 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1698 transitions. Word has length 138 [2021-11-06 14:50:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:05,703 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1698 transitions. [2021-11-06 14:50:05,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1698 transitions. [2021-11-06 14:50:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 14:50:05,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:05,705 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 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] [2021-11-06 14:50:05,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 14:50:05,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:50:05,919 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)] === [2021-11-06 14:50:05,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:05,920 INFO L85 PathProgramCache]: Analyzing trace with hash 591195845, now seen corresponding path program 2 times [2021-11-06 14:50:05,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:05,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784431771] [2021-11-06 14:50:05,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:05,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-06 14:50:06,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:06,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784431771] [2021-11-06 14:50:06,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784431771] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:50:06,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109970947] [2021-11-06 14:50:06,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:50:06,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:50:06,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:50:06,034 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:50:06,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 14:50:25,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 14:50:25,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:50:25,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 14:50:25,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:50:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-06 14:50:25,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109970947] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:50:25,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:50:25,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 14:50:25,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495009890] [2021-11-06 14:50:25,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:50:25,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:25,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:50:25,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:50:25,920 INFO L87 Difference]: Start difference. First operand 1280 states and 1698 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:26,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:26,035 INFO L93 Difference]: Finished difference Result 2561 states and 3399 transitions. [2021-11-06 14:50:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:50:26,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-06 14:50:26,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:26,038 INFO L225 Difference]: With dead ends: 2561 [2021-11-06 14:50:26,039 INFO L226 Difference]: Without dead ends: 1284 [2021-11-06 14:50:26,040 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:50:26,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-11-06 14:50:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1284. [2021-11-06 14:50:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1278 states have (on average 1.3317683881064162) internal successors, (1702), 1283 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1702 transitions. [2021-11-06 14:50:26,164 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1702 transitions. Word has length 140 [2021-11-06 14:50:26,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:26,164 INFO L470 AbstractCegarLoop]: Abstraction has 1284 states and 1702 transitions. [2021-11-06 14:50:26,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:50:26,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1702 transitions. [2021-11-06 14:50:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-06 14:50:26,167 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:26,167 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1] [2021-11-06 14:50:26,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 14:50:26,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:50:26,383 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:50:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1265969610, now seen corresponding path program 3 times [2021-11-06 14:50:26,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:26,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612987880] [2021-11-06 14:50:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:26,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-06 14:50:26,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:26,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612987880] [2021-11-06 14:50:26,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612987880] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:50:26,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161912657] [2021-11-06 14:50:26,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 14:50:26,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:50:26,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:50:26,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:50:26,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 14:51:14,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-06 14:51:14,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:51:14,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 14:51:14,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:51:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-06 14:51:14,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161912657] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:51:14,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:51:14,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-06 14:51:14,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849758342] [2021-11-06 14:51:14,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:51:14,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:14,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:51:14,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:51:14,880 INFO L87 Difference]: Start difference. First operand 1284 states and 1702 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:51:14,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:14,966 INFO L93 Difference]: Finished difference Result 2569 states and 3407 transitions. [2021-11-06 14:51:14,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:51:14,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 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 142 [2021-11-06 14:51:14,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:14,968 INFO L225 Difference]: With dead ends: 2569 [2021-11-06 14:51:14,969 INFO L226 Difference]: Without dead ends: 1288 [2021-11-06 14:51:14,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:51:14,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-11-06 14:51:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2021-11-06 14:51:15,021 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) [2021-11-06 14:51:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1706 transitions. [2021-11-06 14:51:15,022 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1706 transitions. Word has length 142 [2021-11-06 14:51:15,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:51:15,023 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 1706 transitions. [2021-11-06 14:51:15,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:51:15,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1706 transitions. [2021-11-06 14:51:15,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-06 14:51:15,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:15,025 INFO L513 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] [2021-11-06 14:51:15,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 14:51:15,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-06 14:51:15,244 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:51:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:15,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1183496079, now seen corresponding path program 4 times [2021-11-06 14:51:15,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:15,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168125783] [2021-11-06 14:51:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:15,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-06 14:51:15,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:15,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168125783] [2021-11-06 14:51:15,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168125783] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:51:15,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927727212] [2021-11-06 14:51:15,373 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-06 14:51:15,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:51:15,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:51:15,375 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:51:15,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 14:51:17,582 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-06 14:51:17,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:51:17,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 14:51:17,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:51:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-06 14:51:17,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927727212] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:51:17,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:51:17,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-11-06 14:51:17,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952440985] [2021-11-06 14:51:17,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 14:51:17,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:17,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 14:51:17,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:51:17,878 INFO L87 Difference]: Start difference. First operand 1288 states and 1706 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:51:17,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:17,967 INFO L93 Difference]: Finished difference Result 2577 states and 3415 transitions. [2021-11-06 14:51:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 14:51:17,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 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 [2021-11-06 14:51:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:17,970 INFO L225 Difference]: With dead ends: 2577 [2021-11-06 14:51:17,970 INFO L226 Difference]: Without dead ends: 1292 [2021-11-06 14:51:17,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:51:17,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-11-06 14:51:18,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2021-11-06 14:51:18,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1286 states have (on average 1.3297045101088647) internal successors, (1710), 1291 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:51:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1710 transitions. [2021-11-06 14:51:18,033 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1710 transitions. Word has length 144 [2021-11-06 14:51:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:51:18,033 INFO L470 AbstractCegarLoop]: Abstraction has 1292 states and 1710 transitions. [2021-11-06 14:51:18,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:51:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1710 transitions. [2021-11-06 14:51:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-06 14:51:18,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:18,035 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 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] [2021-11-06 14:51:18,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-06 14:51:18,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-06 14:51:18,256 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:51:18,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:18,257 INFO L85 PathProgramCache]: Analyzing trace with hash -764155884, now seen corresponding path program 5 times [2021-11-06 14:51:18,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:18,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897494826] [2021-11-06 14:51:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:18,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-06 14:51:18,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:18,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897494826] [2021-11-06 14:51:18,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897494826] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:51:18,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440089101] [2021-11-06 14:51:18,382 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-06 14:51:18,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:51:18,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:51:18,383 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:51:18,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 14:51:20,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-06 14:51:20,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:51:20,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 14:51:20,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:51:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-06 14:51:21,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440089101] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:51:21,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:51:21,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-11-06 14:51:21,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733567033] [2021-11-06 14:51:21,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 14:51:21,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 14:51:21,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:51:21,183 INFO L87 Difference]: Start difference. First operand 1292 states and 1710 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 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) [2021-11-06 14:51:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:21,300 INFO L93 Difference]: Finished difference Result 2585 states and 3423 transitions. [2021-11-06 14:51:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 14:51:21,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 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 146 [2021-11-06 14:51:21,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:21,306 INFO L225 Difference]: With dead ends: 2585 [2021-11-06 14:51:21,306 INFO L226 Difference]: Without dead ends: 1296 [2021-11-06 14:51:21,308 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:51:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2021-11-06 14:51:21,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1296. [2021-11-06 14:51:21,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1290 states have (on average 1.3286821705426357) internal successors, (1714), 1295 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:51:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1714 transitions. [2021-11-06 14:51:21,394 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1714 transitions. Word has length 146 [2021-11-06 14:51:21,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:51:21,395 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 1714 transitions. [2021-11-06 14:51:21,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 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) [2021-11-06 14:51:21,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1714 transitions. [2021-11-06 14:51:21,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 14:51:21,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:21,397 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 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] [2021-11-06 14:51:21,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-06 14:51:21,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-06 14:51:21,610 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-06 14:51:21,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:21,610 INFO L85 PathProgramCache]: Analyzing trace with hash 148048729, now seen corresponding path program 6 times [2021-11-06 14:51:21,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:21,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877057039] [2021-11-06 14:51:21,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:21,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:21,740 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-06 14:51:21,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:21,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877057039] [2021-11-06 14:51:21,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877057039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:51:21,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248316961] [2021-11-06 14:51:21,741 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-06 14:51:21,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:51:21,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:51:21,743 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:51:21,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-06 14:53:14,273 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-06 14:53:14,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:53:14,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 1806 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-06 14:53:14,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:53:39,447 WARN L207 SmtUtils]: Spent 24.84 s on a formula simplification. DAG size of input: 2641 DAG size of output: 165 [2021-11-06 14:53:39,448 INFO L354 Elim1Store]: treesize reduction 42607, result has 0.8 percent of original size [2021-11-06 14:53:39,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 49 case distinctions, treesize of input 3806981814 treesize of output 3731484536 Killed by 15