./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 16:49:44,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:49:44,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:49:44,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:49:44,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:49:44,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:49:44,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:49:44,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:49:44,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:49:44,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:49:44,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:49:44,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:49:44,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:49:44,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:49:44,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:49:44,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:49:44,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:49:44,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:49:44,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:49:44,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:49:44,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:49:44,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:49:44,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:49:44,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:49:44,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:49:44,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:49:44,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:49:44,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:49:44,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:49:44,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:49:44,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:49:44,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:49:44,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:49:44,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:49:44,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:49:44,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:49:44,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:49:44,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:49:44,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:49:44,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:49:44,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:49:44,802 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:49:44,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:49:44,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:49:44,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:49:44,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:49:44,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:49:44,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:49:44,831 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:49:44,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:49:44,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:49:44,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:49:44,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:49:44,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:49:44,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:49:44,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:49:44,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:49:44,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:49:44,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:49:44,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:49:44,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:49:44,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:49:44,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:49:44,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:49:44,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:49:44,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:49:44,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:49:44,834 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:49:44,834 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:49:44,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:49:44,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:49:44,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d [2021-11-05 16:49:45,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:49:45,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:49:45,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:49:45,140 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:49:45,141 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:49:45,142 INFO L432 ainManager$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 [2021-11-05 16:49:45,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23068d512/a746139ed166424ab8f245354468c766/FLAG13acade94 [2021-11-05 16:49:45,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:49:45,875 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 [2021-11-05 16:49:45,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23068d512/a746139ed166424ab8f245354468c766/FLAG13acade94 [2021-11-05 16:49:46,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23068d512/a746139ed166424ab8f245354468c766 [2021-11-05 16:49:46,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:49:46,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:49:46,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:49:46,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:49:46,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:49:46,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:49:46" (1/1) ... [2021-11-05 16:49:46,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f41138d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:46, skipping insertion in model container [2021-11-05 16:49:46,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:49:46" (1/1) ... [2021-11-05 16:49:46,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:49:46,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:49:46,552 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-05 16:49:46,552 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] [2021-11-05 16:49:46,660 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] [2021-11-05 16:49:46,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:49:46,939 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:49:47,006 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-05 16:49:47,006 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] [2021-11-05 16:49:47,021 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] [2021-11-05 16:49:47,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:49:47,166 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:49:47,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:47 WrapperNode [2021-11-05 16:49:47,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:49:47,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:49:47,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:49:47,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:49:47,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:47" (1/1) ... [2021-11-05 16:49:47,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:47" (1/1) ... [2021-11-05 16:49:47,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:49:47,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:49:47,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:49:47,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:49:47,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:47" (1/1) ... [2021-11-05 16:49:47,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:47" (1/1) ... [2021-11-05 16:49:47,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:47" (1/1) ... [2021-11-05 16:49:47,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:47" (1/1) ... [2021-11-05 16:49:47,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:47" (1/1) ... [2021-11-05 16:49:47,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:47" (1/1) ... [2021-11-05 16:49:47,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:47" (1/1) ... [2021-11-05 16:49:47,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:49:47,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:49:47,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:49:47,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:49:47,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:47" (1/1) ... [2021-11-05 16:49:47,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:49:47,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:49:47,735 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) [2021-11-05 16:49:47,799 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 [2021-11-05 16:49:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:49:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-05 16:49:47,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:49:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:49:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:49:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:49:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:49:47,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:49:47,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:49:51,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:49:51,712 INFO L299 CfgBuilder]: Removed 1042 assume(true) statements. [2021-11-05 16:49:51,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:49:51 BoogieIcfgContainer [2021-11-05 16:49:51,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:49:51,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:49:51,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:49:51,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:49:51,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:49:46" (1/3) ... [2021-11-05 16:49:51,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c517b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:49:51, skipping insertion in model container [2021-11-05 16:49:51,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:49:47" (2/3) ... [2021-11-05 16:49:51,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c517b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:49:51, skipping insertion in model container [2021-11-05 16:49:51,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:49:51" (3/3) ... [2021-11-05 16:49:51,721 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 [2021-11-05 16:49:51,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:49:51,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-05 16:49:51,778 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:49:51,786 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 [2021-11-05 16:49:51,786 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-05 16:49:51,819 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) [2021-11-05 16:49:51,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-05 16:49:51,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:51,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:51,832 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)] === [2021-11-05 16:49:51,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:51,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1385985514, now seen corresponding path program 1 times [2021-11-05 16:49:51,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:51,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495317212] [2021-11-05 16:49:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:51,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:49:52,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:52,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495317212] [2021-11-05 16:49:52,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495317212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:52,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:52,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:49:52,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426898322] [2021-11-05 16:49:52,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:52,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 16:49:52,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:52,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 16:49:52,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 16:49:52,211 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) [2021-11-05 16:49:52,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:52,358 INFO L93 Difference]: Finished difference Result 1667 states and 2311 transitions. [2021-11-05 16:49:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 16:49:52,360 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 [2021-11-05 16:49:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:52,375 INFO L225 Difference]: With dead ends: 1667 [2021-11-05 16:49:52,375 INFO L226 Difference]: Without dead ends: 823 [2021-11-05 16:49:52,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 16:49:52,382 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:52,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 7.62ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 16:49:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-05 16:49:52,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 823. [2021-11-05 16:49:52,431 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) [2021-11-05 16:49:52,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1122 transitions. [2021-11-05 16:49:52,433 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1122 transitions. Word has length 62 [2021-11-05 16:49:52,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:52,434 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 1122 transitions. [2021-11-05 16:49:52,434 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) [2021-11-05 16:49:52,434 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1122 transitions. [2021-11-05 16:49:52,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-05 16:49:52,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:52,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:52,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:49:52,437 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)] === [2021-11-05 16:49:52,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:52,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1732742655, now seen corresponding path program 1 times [2021-11-05 16:49:52,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:52,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124472594] [2021-11-05 16:49:52,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:52,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:52,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:49:52,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:52,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124472594] [2021-11-05 16:49:52,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124472594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:52,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:52,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:49:52,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294814952] [2021-11-05 16:49:52,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:52,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:49:52,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:52,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:49:52,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:52,520 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) [2021-11-05 16:49:52,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:52,587 INFO L93 Difference]: Finished difference Result 1664 states and 2273 transitions. [2021-11-05 16:49:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:49:52,588 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 [2021-11-05 16:49:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:52,590 INFO L225 Difference]: With dead ends: 1664 [2021-11-05 16:49:52,590 INFO L226 Difference]: Without dead ends: 844 [2021-11-05 16:49:52,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:52,592 INFO L933 BasicCegarLoop]: 1121 mSDtfsCounter, 27 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.22ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.17ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:52,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 2222 Invalid, 20 Unknown, 0 Unchecked, 3.22ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 32.17ms Time] [2021-11-05 16:49:52,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-11-05 16:49:52,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 841. [2021-11-05 16:49:52,608 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) [2021-11-05 16:49:52,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1149 transitions. [2021-11-05 16:49:52,610 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1149 transitions. Word has length 63 [2021-11-05 16:49:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:52,610 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1149 transitions. [2021-11-05 16:49:52,610 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) [2021-11-05 16:49:52,611 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1149 transitions. [2021-11-05 16:49:52,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 16:49:52,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:52,613 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:52,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:49:52,613 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)] === [2021-11-05 16:49:52,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:52,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2128587854, now seen corresponding path program 1 times [2021-11-05 16:49:52,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:52,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981606167] [2021-11-05 16:49:52,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:52,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:49:52,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:52,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981606167] [2021-11-05 16:49:52,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981606167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:52,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:52,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:49:52,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861183800] [2021-11-05 16:49:52,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:52,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:49:52,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:52,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:49:52,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:49:52,716 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) [2021-11-05 16:49:52,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:52,860 INFO L93 Difference]: Finished difference Result 1683 states and 2300 transitions. [2021-11-05 16:49:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:49:52,861 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 [2021-11-05 16:49:52,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:52,864 INFO L225 Difference]: With dead ends: 1683 [2021-11-05 16:49:52,864 INFO L226 Difference]: Without dead ends: 839 [2021-11-05 16:49:52,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.05ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:49:52,865 INFO L933 BasicCegarLoop]: 1119 mSDtfsCounter, 7 mSDsluCounter, 3349 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.38ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.66ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:52,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4468 Invalid, 17 Unknown, 0 Unchecked, 3.38ms Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 115.66ms Time] [2021-11-05 16:49:52,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-05 16:49:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2021-11-05 16:49:52,876 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) [2021-11-05 16:49:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1144 transitions. [2021-11-05 16:49:52,878 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1144 transitions. Word has length 85 [2021-11-05 16:49:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:52,878 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1144 transitions. [2021-11-05 16:49:52,879 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) [2021-11-05 16:49:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1144 transitions. [2021-11-05 16:49:52,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 16:49:52,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:52,880 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:52,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:49:52,880 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)] === [2021-11-05 16:49:52,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:52,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1592921077, now seen corresponding path program 1 times [2021-11-05 16:49:52,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:52,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889133879] [2021-11-05 16:49:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:52,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:49:53,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:53,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889133879] [2021-11-05 16:49:53,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889133879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:53,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:53,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 16:49:53,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602128573] [2021-11-05 16:49:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:53,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:49:53,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:53,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:49:53,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:49:53,059 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) [2021-11-05 16:49:53,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:53,494 INFO L93 Difference]: Finished difference Result 1763 states and 2417 transitions. [2021-11-05 16:49:53,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 16:49:53,495 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 [2021-11-05 16:49:53,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:53,498 INFO L225 Difference]: With dead ends: 1763 [2021-11-05 16:49:53,498 INFO L226 Difference]: Without dead ends: 927 [2021-11-05 16:49:53,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 32.12ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:49:53,500 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 1309 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 329.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.47ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 373.22ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:53,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1309 Valid, 3313 Invalid, 122 Unknown, 0 Unchecked, 6.47ms Time], IncrementalHoareTripleChecker [42 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 373.22ms Time] [2021-11-05 16:49:53,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-05 16:49:53,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 899. [2021-11-05 16:49:53,520 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) [2021-11-05 16:49:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1234 transitions. [2021-11-05 16:49:53,522 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1234 transitions. Word has length 85 [2021-11-05 16:49:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:53,523 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1234 transitions. [2021-11-05 16:49:53,523 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) [2021-11-05 16:49:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1234 transitions. [2021-11-05 16:49:53,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 16:49:53,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:53,525 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:53,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:49:53,525 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)] === [2021-11-05 16:49:53,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:53,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1295159176, now seen corresponding path program 1 times [2021-11-05 16:49:53,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:53,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997771665] [2021-11-05 16:49:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:53,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:49:53,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:53,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997771665] [2021-11-05 16:49:53,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997771665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:53,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:53,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:49:53,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47973521] [2021-11-05 16:49:53,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:53,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:49:53,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:53,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:49:53,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:53,592 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) [2021-11-05 16:49:53,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:53,642 INFO L93 Difference]: Finished difference Result 2689 states and 3693 transitions. [2021-11-05 16:49:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:49:53,643 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 [2021-11-05 16:49:53,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:53,648 INFO L225 Difference]: With dead ends: 2689 [2021-11-05 16:49:53,648 INFO L226 Difference]: Without dead ends: 1793 [2021-11-05 16:49:53,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:53,650 INFO L933 BasicCegarLoop]: 1185 mSDtfsCounter, 1109 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.35ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:53,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 2297 Invalid, 6 Unknown, 0 Unchecked, 3.44ms Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 4.35ms Time] [2021-11-05 16:49:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-11-05 16:49:53,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 900. [2021-11-05 16:49:53,680 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) [2021-11-05 16:49:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1235 transitions. [2021-11-05 16:49:53,682 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1235 transitions. Word has length 99 [2021-11-05 16:49:53,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:53,682 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 1235 transitions. [2021-11-05 16:49:53,682 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) [2021-11-05 16:49:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1235 transitions. [2021-11-05 16:49:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 16:49:53,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:53,684 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:53,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:49:53,684 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)] === [2021-11-05 16:49:53,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:53,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1712555782, now seen corresponding path program 1 times [2021-11-05 16:49:53,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:53,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522026026] [2021-11-05 16:49:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:53,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 16:49:53,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:53,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522026026] [2021-11-05 16:49:53,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522026026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:53,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:53,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:49:53,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459318430] [2021-11-05 16:49:53,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:53,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:49:53,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:53,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:49:53,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:49:53,762 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) [2021-11-05 16:49:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:53,849 INFO L93 Difference]: Finished difference Result 1980 states and 2733 transitions. [2021-11-05 16:49:53,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:49:53,850 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 [2021-11-05 16:49:53,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:53,854 INFO L225 Difference]: With dead ends: 1980 [2021-11-05 16:49:53,854 INFO L226 Difference]: Without dead ends: 1083 [2021-11-05 16:49:53,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:49:53,856 INFO L933 BasicCegarLoop]: 1255 mSDtfsCounter, 142 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.78ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.15ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:53,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 3599 Invalid, 41 Unknown, 0 Unchecked, 3.78ms Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 33.15ms Time] [2021-11-05 16:49:53,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2021-11-05 16:49:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 904. [2021-11-05 16:49:53,877 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) [2021-11-05 16:49:53,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1239 transitions. [2021-11-05 16:49:53,879 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1239 transitions. Word has length 99 [2021-11-05 16:49:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:53,879 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1239 transitions. [2021-11-05 16:49:53,879 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) [2021-11-05 16:49:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1239 transitions. [2021-11-05 16:49:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-05 16:49:53,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:53,881 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:53,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:49:53,881 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)] === [2021-11-05 16:49:53,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1060503898, now seen corresponding path program 1 times [2021-11-05 16:49:53,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:53,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619997591] [2021-11-05 16:49:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:53,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 16:49:53,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:53,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619997591] [2021-11-05 16:49:53,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619997591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:53,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:53,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:49:53,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834012780] [2021-11-05 16:49:53,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:53,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:49:53,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:53,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:49:53,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:53,994 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) [2021-11-05 16:49:54,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:54,033 INFO L93 Difference]: Finished difference Result 1805 states and 2475 transitions. [2021-11-05 16:49:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:49:54,034 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 [2021-11-05 16:49:54,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:54,036 INFO L225 Difference]: With dead ends: 1805 [2021-11-05 16:49:54,037 INFO L226 Difference]: Without dead ends: 904 [2021-11-05 16:49:54,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:54,038 INFO L933 BasicCegarLoop]: 1097 mSDtfsCounter, 1027 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.33ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:54,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 1097 Invalid, 19 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 11.33ms Time] [2021-11-05 16:49:54,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-11-05 16:49:54,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2021-11-05 16:49:54,060 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) [2021-11-05 16:49:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1226 transitions. [2021-11-05 16:49:54,061 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1226 transitions. Word has length 107 [2021-11-05 16:49:54,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:54,062 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1226 transitions. [2021-11-05 16:49:54,062 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) [2021-11-05 16:49:54,062 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1226 transitions. [2021-11-05 16:49:54,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-05 16:49:54,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:54,063 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:54,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:49:54,064 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)] === [2021-11-05 16:49:54,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:54,064 INFO L85 PathProgramCache]: Analyzing trace with hash -242855448, now seen corresponding path program 1 times [2021-11-05 16:49:54,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:54,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791119182] [2021-11-05 16:49:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:54,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 16:49:54,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:54,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791119182] [2021-11-05 16:49:54,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791119182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:54,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:54,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:49:54,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277673997] [2021-11-05 16:49:54,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:54,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:49:54,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:54,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:49:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:54,141 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) [2021-11-05 16:49:54,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:54,180 INFO L93 Difference]: Finished difference Result 1807 states and 2453 transitions. [2021-11-05 16:49:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:49:54,181 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 [2021-11-05 16:49:54,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:54,183 INFO L225 Difference]: With dead ends: 1807 [2021-11-05 16:49:54,184 INFO L226 Difference]: Without dead ends: 906 [2021-11-05 16:49:54,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:54,185 INFO L933 BasicCegarLoop]: 1105 mSDtfsCounter, 0 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.17ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:54,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2200 Invalid, 14 Unknown, 0 Unchecked, 2.40ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 10.17ms Time] [2021-11-05 16:49:54,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-11-05 16:49:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 906. [2021-11-05 16:49:54,208 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) [2021-11-05 16:49:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1228 transitions. [2021-11-05 16:49:54,210 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1228 transitions. Word has length 107 [2021-11-05 16:49:54,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:54,210 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1228 transitions. [2021-11-05 16:49:54,211 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) [2021-11-05 16:49:54,211 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1228 transitions. [2021-11-05 16:49:54,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-05 16:49:54,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:54,212 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:54,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 16:49:54,212 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)] === [2021-11-05 16:49:54,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:54,213 INFO L85 PathProgramCache]: Analyzing trace with hash -635882458, now seen corresponding path program 1 times [2021-11-05 16:49:54,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:54,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171220535] [2021-11-05 16:49:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:54,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 16:49:54,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:54,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171220535] [2021-11-05 16:49:54,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171220535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:54,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:54,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:49:54,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160546704] [2021-11-05 16:49:54,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:54,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:49:54,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:54,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:49:54,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:54,290 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) [2021-11-05 16:49:54,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:54,503 INFO L93 Difference]: Finished difference Result 2622 states and 3570 transitions. [2021-11-05 16:49:54,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:49:54,504 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 [2021-11-05 16:49:54,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:54,509 INFO L225 Difference]: With dead ends: 2622 [2021-11-05 16:49:54,509 INFO L226 Difference]: Without dead ends: 1719 [2021-11-05 16:49:54,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:54,511 INFO L933 BasicCegarLoop]: 1983 mSDtfsCounter, 978 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.04ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 156.76ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:54,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 3048 Invalid, 76 Unknown, 0 Unchecked, 4.04ms Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 156.76ms Time] [2021-11-05 16:49:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2021-11-05 16:49:54,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 912. [2021-11-05 16:49:54,539 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) [2021-11-05 16:49:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1234 transitions. [2021-11-05 16:49:54,541 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1234 transitions. Word has length 107 [2021-11-05 16:49:54,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:54,541 INFO L470 AbstractCegarLoop]: Abstraction has 912 states and 1234 transitions. [2021-11-05 16:49:54,542 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) [2021-11-05 16:49:54,542 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1234 transitions. [2021-11-05 16:49:54,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-05 16:49:54,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:54,543 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:54,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 16:49:54,543 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)] === [2021-11-05 16:49:54,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:54,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1658569363, now seen corresponding path program 1 times [2021-11-05 16:49:54,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:54,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500476456] [2021-11-05 16:49:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:54,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 16:49:54,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:54,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500476456] [2021-11-05 16:49:54,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500476456] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:49:54,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702547058] [2021-11-05 16:49:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:54,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:49:54,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:49:54,623 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) [2021-11-05 16:49:54,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 16:49:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:55,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:49:55,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:49:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 16:49:55,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:49:55,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702547058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:55,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:49:55,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 16:49:55,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941052353] [2021-11-05 16:49:55,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:55,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:49:55,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:49:55,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:49:55,197 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) [2021-11-05 16:49:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:55,333 INFO L93 Difference]: Finished difference Result 2604 states and 3552 transitions. [2021-11-05 16:49:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:49:55,334 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 [2021-11-05 16:49:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:55,339 INFO L225 Difference]: With dead ends: 2604 [2021-11-05 16:49:55,340 INFO L226 Difference]: Without dead ends: 1695 [2021-11-05 16:49:55,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.73ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:49:55,342 INFO L933 BasicCegarLoop]: 1963 mSDtfsCounter, 937 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.62ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.54ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:55,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 3034 Invalid, 58 Unknown, 0 Unchecked, 4.62ms Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 62.54ms Time] [2021-11-05 16:49:55,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2021-11-05 16:49:55,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 948. [2021-11-05 16:49:55,380 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) [2021-11-05 16:49:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1282 transitions. [2021-11-05 16:49:55,383 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1282 transitions. Word has length 111 [2021-11-05 16:49:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:55,383 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1282 transitions. [2021-11-05 16:49:55,384 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) [2021-11-05 16:49:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1282 transitions. [2021-11-05 16:49:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-05 16:49:55,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:55,385 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:55,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 16:49:55,603 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 [2021-11-05 16:49:55,604 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)] === [2021-11-05 16:49:55,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:55,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1898073031, now seen corresponding path program 1 times [2021-11-05 16:49:55,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:55,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578889984] [2021-11-05 16:49:55,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:55,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 16:49:55,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:55,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578889984] [2021-11-05 16:49:55,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578889984] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:49:55,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47011070] [2021-11-05 16:49:55,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:55,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:49:55,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:49:55,728 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) [2021-11-05 16:49:55,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 16:49:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:56,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:49:56,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:49:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 16:49:56,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:49:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 16:49:56,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47011070] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:49:56,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:49:56,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 16:49:56,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289480214] [2021-11-05 16:49:56,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:49:56,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 16:49:56,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:56,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 16:49:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:49:56,422 INFO L87 Difference]: Start difference. First operand 948 states and 1282 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:49:57,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:57,066 INFO L93 Difference]: Finished difference Result 5151 states and 7035 transitions. [2021-11-05 16:49:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:49:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-05 16:49:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:57,082 INFO L225 Difference]: With dead ends: 5151 [2021-11-05 16:49:57,082 INFO L226 Difference]: Without dead ends: 4206 [2021-11-05 16:49:57,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 12.51ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:49:57,086 INFO L933 BasicCegarLoop]: 1945 mSDtfsCounter, 3906 mSDsluCounter, 7784 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 338.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3906 SdHoareTripleChecker+Valid, 9729 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.67ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 388.77ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:57,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3906 Valid, 9729 Invalid, 224 Unknown, 0 Unchecked, 13.67ms Time], IncrementalHoareTripleChecker [44 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 388.77ms Time] [2021-11-05 16:49:57,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2021-11-05 16:49:57,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 1182. [2021-11-05 16:49:57,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1176 states have (on average 1.3401360544217686) internal successors, (1576), 1181 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:49:57,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1576 transitions. [2021-11-05 16:49:57,166 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1576 transitions. Word has length 116 [2021-11-05 16:49:57,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:57,167 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 1576 transitions. [2021-11-05 16:49:57,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:49:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1576 transitions. [2021-11-05 16:49:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-05 16:49:57,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:57,170 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:57,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 16:49:57,404 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 [2021-11-05 16:49:57,405 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)] === [2021-11-05 16:49:57,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:57,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1895567890, now seen corresponding path program 1 times [2021-11-05 16:49:57,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:57,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367065747] [2021-11-05 16:49:57,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:57,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-05 16:49:57,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:57,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367065747] [2021-11-05 16:49:57,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367065747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:57,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:57,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:49:57,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305971337] [2021-11-05 16:49:57,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:57,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:49:57,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:57,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:49:57,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:49:57,492 INFO L87 Difference]: Start difference. First operand 1182 states and 1576 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:49:57,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:57,587 INFO L93 Difference]: Finished difference Result 2544 states and 3408 transitions. [2021-11-05 16:49:57,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:49:57,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-05 16:49:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:57,592 INFO L225 Difference]: With dead ends: 2544 [2021-11-05 16:49:57,592 INFO L226 Difference]: Without dead ends: 1365 [2021-11-05 16:49:57,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:49:57,595 INFO L933 BasicCegarLoop]: 1241 mSDtfsCounter, 138 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 3561 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.71ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.07ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:57,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 3561 Invalid, 41 Unknown, 0 Unchecked, 3.71ms Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 34.07ms Time] [2021-11-05 16:49:57,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-11-05 16:49:57,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1182. [2021-11-05 16:49:57,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1176 states have (on average 1.3401360544217686) internal successors, (1576), 1181 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:49:57,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1576 transitions. [2021-11-05 16:49:57,638 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1576 transitions. Word has length 128 [2021-11-05 16:49:57,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:57,639 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 1576 transitions. [2021-11-05 16:49:57,639 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) [2021-11-05 16:49:57,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1576 transitions. [2021-11-05 16:49:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-05 16:49:57,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:57,641 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:57,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 16:49:57,642 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)] === [2021-11-05 16:49:57,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2039175664, now seen corresponding path program 1 times [2021-11-05 16:49:57,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:57,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454156070] [2021-11-05 16:49:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:57,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 16:49:57,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:57,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454156070] [2021-11-05 16:49:57,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454156070] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:49:57,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632296082] [2021-11-05 16:49:57,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:57,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:49:57,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:49:57,825 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) [2021-11-05 16:49:57,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 16:49:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:58,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-05 16:49:58,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:49:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 16:49:58,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:49:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 16:49:58,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632296082] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:49:58,627 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:49:58,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2021-11-05 16:49:58,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541133368] [2021-11-05 16:49:58,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:49:58,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 16:49:58,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:58,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 16:49:58,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:49:58,628 INFO L87 Difference]: Start difference. First operand 1182 states and 1576 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:49:59,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:59,267 INFO L93 Difference]: Finished difference Result 6228 states and 8452 transitions. [2021-11-05 16:49:59,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 16:49:59,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-05 16:49:59,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:59,282 INFO L225 Difference]: With dead ends: 6228 [2021-11-05 16:49:59,282 INFO L226 Difference]: Without dead ends: 5049 [2021-11-05 16:49:59,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 15.81ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:49:59,287 INFO L933 BasicCegarLoop]: 1945 mSDtfsCounter, 7791 mSDsluCounter, 6811 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 312.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7791 SdHoareTripleChecker+Valid, 8756 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.07ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 365.12ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:59,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7791 Valid, 8756 Invalid, 226 Unknown, 0 Unchecked, 15.07ms Time], IncrementalHoareTripleChecker [52 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 365.12ms Time] [2021-11-05 16:49:59,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5049 states. [2021-11-05 16:49:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5049 to 1266. [2021-11-05 16:49:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1260 states have (on average 1.3365079365079364) internal successors, (1684), 1265 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:49:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1684 transitions. [2021-11-05 16:49:59,357 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1684 transitions. Word has length 129 [2021-11-05 16:49:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:59,358 INFO L470 AbstractCegarLoop]: Abstraction has 1266 states and 1684 transitions. [2021-11-05 16:49:59,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:49:59,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1684 transitions. [2021-11-05 16:49:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-05 16:49:59,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:59,360 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:59,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-05 16:49:59,579 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 [2021-11-05 16:49:59,579 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)] === [2021-11-05 16:49:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1287416823, now seen corresponding path program 2 times [2021-11-05 16:49:59,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:59,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636011489] [2021-11-05 16:49:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:59,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 16:49:59,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:59,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636011489] [2021-11-05 16:49:59,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636011489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:59,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:59,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:49:59,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084469825] [2021-11-05 16:49:59,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:59,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:49:59,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:59,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:49:59,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:59,801 INFO L87 Difference]: Start difference. First operand 1266 states and 1684 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:49:59,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:59,882 INFO L93 Difference]: Finished difference Result 2533 states and 3371 transitions. [2021-11-05 16:49:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:49:59,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-05 16:49:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:59,895 INFO L225 Difference]: With dead ends: 2533 [2021-11-05 16:49:59,895 INFO L226 Difference]: Without dead ends: 1270 [2021-11-05 16:49:59,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:59,897 INFO L933 BasicCegarLoop]: 1105 mSDtfsCounter, 1 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.23ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:59,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2206 Invalid, 8 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 6.23ms Time] [2021-11-05 16:49:59,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-11-05 16:49:59,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1270. [2021-11-05 16:49:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1264 states have (on average 1.3354430379746836) internal successors, (1688), 1269 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:49:59,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1688 transitions. [2021-11-05 16:49:59,974 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1688 transitions. Word has length 133 [2021-11-05 16:49:59,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:59,975 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 1688 transitions. [2021-11-05 16:49:59,975 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) [2021-11-05 16:49:59,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1688 transitions. [2021-11-05 16:49:59,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-05 16:49:59,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:59,977 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:59,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 16:49:59,978 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)] === [2021-11-05 16:49:59,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:59,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1670612132, now seen corresponding path program 1 times [2021-11-05 16:49:59,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:59,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192859763] [2021-11-05 16:49:59,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:59,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:50:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:50:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 16:50:00,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:50:00,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192859763] [2021-11-05 16:50:00,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192859763] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:50:00,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905272978] [2021-11-05 16:50:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:50:00,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:50:00,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:50:00,164 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) [2021-11-05 16:50:00,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 16:50:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:50:01,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-05 16:50:01,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:50:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-05 16:50:01,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:50:01,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905272978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:50:01,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:50:01,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-05 16:50:01,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241061471] [2021-11-05 16:50:01,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:50:01,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:50:01,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:50:01,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:50:01,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:50:01,517 INFO L87 Difference]: Start difference. First operand 1270 states and 1688 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:50:01,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:50:01,639 INFO L93 Difference]: Finished difference Result 2951 states and 3955 transitions. [2021-11-05 16:50:01,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:50:01,640 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 [2021-11-05 16:50:01,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:50:01,645 INFO L225 Difference]: With dead ends: 2951 [2021-11-05 16:50:01,645 INFO L226 Difference]: Without dead ends: 1684 [2021-11-05 16:50:01,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.59ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:50:01,648 INFO L933 BasicCegarLoop]: 1353 mSDtfsCounter, 428 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 3783 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.34ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.72ms IncrementalHoareTripleChecker+Time [2021-11-05 16:50:01,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 3783 Invalid, 41 Unknown, 0 Unchecked, 4.34ms Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 43.72ms Time] [2021-11-05 16:50:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2021-11-05 16:50:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1274. [2021-11-05 16:50:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1268 states have (on average 1.334384858044164) internal successors, (1692), 1273 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:50:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1692 transitions. [2021-11-05 16:50:01,742 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1692 transitions. Word has length 135 [2021-11-05 16:50:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:50:01,742 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 1692 transitions. [2021-11-05 16:50:01,742 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) [2021-11-05 16:50:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1692 transitions. [2021-11-05 16:50:01,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 16:50:01,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:50:01,744 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:50:01,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 16:50:01,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-05 16:50:01,982 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)] === [2021-11-05 16:50:01,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:50:01,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1480978942, now seen corresponding path program 1 times [2021-11-05 16:50:01,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:50:01,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405811851] [2021-11-05 16:50:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:50:01,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:50:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:50:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 16:50:02,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:50:02,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405811851] [2021-11-05 16:50:02,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405811851] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:50:02,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708065190] [2021-11-05 16:50:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:50:02,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:50:02,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:50:02,112 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) [2021-11-05 16:50:02,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 16:50:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:50:02,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:50:02,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:50:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-05 16:50:03,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:50:03,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708065190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:50:03,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:50:03,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 16:50:03,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402837833] [2021-11-05 16:50:03,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:50:03,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:50:03,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:50:03,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:50:03,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:50:03,166 INFO L87 Difference]: Start difference. First operand 1274 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:50:03,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:50:03,236 INFO L93 Difference]: Finished difference Result 2690 states and 3588 transitions. [2021-11-05 16:50:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:50:03,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-05 16:50:03,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:50:03,241 INFO L225 Difference]: With dead ends: 2690 [2021-11-05 16:50:03,241 INFO L226 Difference]: Without dead ends: 1419 [2021-11-05 16:50:03,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.41ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:50:03,243 INFO L933 BasicCegarLoop]: 1193 mSDtfsCounter, 88 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.11ms IncrementalHoareTripleChecker+Time [2021-11-05 16:50:03,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 2290 Invalid, 14 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 15.11ms Time] [2021-11-05 16:50:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-11-05 16:50:03,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1276. [2021-11-05 16:50:03,291 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) [2021-11-05 16:50:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1694 transitions. [2021-11-05 16:50:03,293 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1694 transitions. Word has length 138 [2021-11-05 16:50:03,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:50:03,293 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1694 transitions. [2021-11-05 16:50:03,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:50:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1694 transitions. [2021-11-05 16:50:03,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 16:50:03,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:50:03,296 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:50:03,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 16:50:03,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-05 16:50:03,519 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)] === [2021-11-05 16:50:03,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:50:03,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1721218688, now seen corresponding path program 1 times [2021-11-05 16:50:03,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:50:03,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256858374] [2021-11-05 16:50:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:50:03,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:50:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:50:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 16:50:03,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:50:03,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256858374] [2021-11-05 16:50:03,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256858374] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:50:03,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261195958] [2021-11-05 16:50:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:50:03,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:50:03,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:50:03,716 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) [2021-11-05 16:50:03,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 16:50:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:50:04,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 16:50:04,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:50:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 16:50:05,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:50:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 16:50:05,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261195958] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:50:05,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:50:05,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 16:50:05,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094858235] [2021-11-05 16:50:05,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:50:05,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 16:50:05,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:50:05,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 16:50:05,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:50:05,334 INFO L87 Difference]: Start difference. First operand 1276 states and 1694 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:50:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:50:05,447 INFO L93 Difference]: Finished difference Result 2561 states and 3403 transitions. [2021-11-05 16:50:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:50:05,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-05 16:50:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:50:05,456 INFO L225 Difference]: With dead ends: 2561 [2021-11-05 16:50:05,458 INFO L226 Difference]: Without dead ends: 1288 [2021-11-05 16:50:05,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 24.94ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:50:05,462 INFO L933 BasicCegarLoop]: 1107 mSDtfsCounter, 7 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.96ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.10ms IncrementalHoareTripleChecker+Time [2021-11-05 16:50:05,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4414 Invalid, 35 Unknown, 0 Unchecked, 3.96ms Time], IncrementalHoareTripleChecker [13 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 26.10ms Time] [2021-11-05 16:50:05,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-11-05 16:50:05,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2021-11-05 16:50:05,525 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) [2021-11-05 16:50:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1706 transitions. [2021-11-05 16:50:05,527 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1706 transitions. Word has length 138 [2021-11-05 16:50:05,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:50:05,527 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 1706 transitions. [2021-11-05 16:50:05,527 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) [2021-11-05 16:50:05,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1706 transitions. [2021-11-05 16:50:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-05 16:50:05,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:50:05,530 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:50:05,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-05 16:50:05,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-05 16:50:05,744 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)] === [2021-11-05 16:50:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:50:05,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1183496079, now seen corresponding path program 2 times [2021-11-05 16:50:05,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:50:05,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897397643] [2021-11-05 16:50:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:50:05,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:50:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:50:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 16:50:05,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:50:05,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897397643] [2021-11-05 16:50:05,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897397643] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:50:05,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573549302] [2021-11-05 16:50:05,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 16:50:05,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:50:05,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:50:05,896 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) [2021-11-05 16:50:05,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 16:50:29,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-05 16:50:29,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:50:29,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-05 16:50:29,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:50:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 16:50:29,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:50:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 16:50:30,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573549302] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:50:30,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:50:30,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-05 16:50:30,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738066957] [2021-11-05 16:50:30,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:50:30,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 16:50:30,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:50:30,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 16:50:30,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-05 16:50:30,034 INFO L87 Difference]: Start difference. First operand 1288 states and 1706 transitions. Second operand has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:50:30,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:50:30,353 INFO L93 Difference]: Finished difference Result 2597 states and 3445 transitions. [2021-11-05 16:50:30,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 16:50:30,354 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-05 16:50:30,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:50:30,356 INFO L225 Difference]: With dead ends: 2597 [2021-11-05 16:50:30,357 INFO L226 Difference]: Without dead ends: 1312 [2021-11-05 16:50:30,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 281 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 231.99ms TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2021-11-05 16:50:30,359 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 29 mSDsluCounter, 7745 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.14ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.97ms IncrementalHoareTripleChecker+Time [2021-11-05 16:50:30,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 8858 Invalid, 123 Unknown, 0 Unchecked, 5.14ms Time], IncrementalHoareTripleChecker [43 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 106.97ms Time] [2021-11-05 16:50:30,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-11-05 16:50:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1312. [2021-11-05 16:50:30,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1306 states have (on average 1.324655436447167) internal successors, (1730), 1311 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:50:30,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1730 transitions. [2021-11-05 16:50:30,448 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1730 transitions. Word has length 144 [2021-11-05 16:50:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:50:30,448 INFO L470 AbstractCegarLoop]: Abstraction has 1312 states and 1730 transitions. [2021-11-05 16:50:30,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:50:30,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1730 transitions. [2021-11-05 16:50:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-05 16:50:30,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:50:30,451 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:50:30,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 16:50:30,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:50:30,669 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)] === [2021-11-05 16:50:30,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:50:30,669 INFO L85 PathProgramCache]: Analyzing trace with hash 740119533, now seen corresponding path program 3 times [2021-11-05 16:50:30,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:50:30,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948875912] [2021-11-05 16:50:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:50:30,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:50:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:50:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 16:50:30,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:50:30,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948875912] [2021-11-05 16:50:30,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948875912] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:50:30,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484310957] [2021-11-05 16:50:30,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-05 16:50:30,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:50:30,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:50:30,896 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) [2021-11-05 16:50:30,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 16:59:36,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-05 16:59:36,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:59:37,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-05 16:59:37,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:59:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-05 16:59:37,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:59:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 16:59:38,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484310957] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:59:38,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:59:38,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 26 [2021-11-05 16:59:38,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098538502] [2021-11-05 16:59:38,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:59:38,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-05 16:59:38,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:59:38,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-05 16:59:38,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2021-11-05 16:59:38,067 INFO L87 Difference]: Start difference. First operand 1312 states and 1730 transitions. Second operand has 26 states, 26 states have (on average 6.961538461538462) internal successors, (181), 26 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:59:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:59:55,696 INFO L93 Difference]: Finished difference Result 2807 states and 3727 transitions. [2021-11-05 16:59:55,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-05 16:59:55,698 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.961538461538462) internal successors, (181), 26 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-05 16:59:55,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:59:55,705 INFO L225 Difference]: With dead ends: 2807 [2021-11-05 16:59:55,705 INFO L226 Difference]: Without dead ends: 1498 [2021-11-05 16:59:55,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 15035.11ms TimeCoverageRelationStatistics Valid=588, Invalid=1764, Unknown=0, NotChecked=0, Total=2352 [2021-11-05 16:59:55,708 INFO L933 BasicCegarLoop]: 1198 mSDtfsCounter, 12226 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2737.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12226 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.81ms SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2809.50ms IncrementalHoareTripleChecker+Time [2021-11-05 16:59:55,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12226 Valid, 3410 Invalid, 521 Unknown, 0 Unchecked, 28.81ms Time], IncrementalHoareTripleChecker [231 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 2809.50ms Time] [2021-11-05 16:59:55,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-11-05 16:59:55,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1360. [2021-11-05 16:59:55,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1354 states have (on average 1.3146233382570163) internal successors, (1780), 1359 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:59:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1780 transitions. [2021-11-05 16:59:55,807 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1780 transitions. Word has length 156 [2021-11-05 16:59:55,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:59:55,807 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 1780 transitions. [2021-11-05 16:59:55,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.961538461538462) internal successors, (181), 26 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:59:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1780 transitions. [2021-11-05 16:59:55,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-05 16:59:55,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:59:55,812 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:59:55,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-05 16:59:56,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:59:56,027 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)] === [2021-11-05 16:59:56,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:59:56,028 INFO L85 PathProgramCache]: Analyzing trace with hash 320373894, now seen corresponding path program 4 times [2021-11-05 16:59:56,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:59:56,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877837101] [2021-11-05 16:59:56,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:59:56,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:59:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:59:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-05 16:59:56,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:59:56,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877837101] [2021-11-05 16:59:56,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877837101] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:59:56,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360335647] [2021-11-05 16:59:56,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-05 16:59:56,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:59:56,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:59:56,823 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) [2021-11-05 16:59:56,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 17:00:06,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-05 17:00:06,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 17:00:06,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-05 17:00:06,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:00:31,473 WARN L230 SmtUtils]: Spent 24.68s on a formula simplification. DAG size of input: 2634 DAG size of output: 165 [2021-11-05 17:00:31,475 INFO L354 Elim1Store]: treesize reduction 42583, result has 0.8 percent of original size [2021-11-05 17:00:31,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 45 case distinctions, treesize of input 21255448 treesize of output 21122520 [2021-11-05 17:01:42,328 WARN L230 SmtUtils]: Spent 1.18m on a formula simplification that was a NOOP. DAG size: 691 Killed by 15