./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.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 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 23:11:12,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:11:12,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:11:12,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:11:12,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:11:12,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:11:12,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:11:12,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:11:12,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:11:12,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:11:12,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:11:12,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:11:12,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:11:12,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:11:12,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:11:12,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:11:12,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:11:12,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:11:12,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:11:12,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:11:12,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:11:12,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:11:12,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:11:12,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:11:12,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:11:12,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:11:12,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:11:12,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:11:12,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:11:12,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:11:12,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:11:12,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:11:12,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:11:12,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:11:12,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:11:12,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:11:12,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:11:12,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:11:12,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:11:12,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:11:12,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:11:12,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 23:11:12,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:11:12,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:11:12,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 23:11:12,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 23:11:12,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:11:12,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:11:12,778 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 23:11:12,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:11:12,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:11:12,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:11:12,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:11:12,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:11:12,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:11:12,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:11:12,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:11:12,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:11:12,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:11:12,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 23:11:12,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 23:11:12,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:11:12,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:11:12,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:11:12,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:11:12,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 23:11:12,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:11:12,782 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 23:11:12,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 23:11:12,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:11:12,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 23:11:12,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb [2021-11-22 23:11:12,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:11:12,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:11:12,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:11:12,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:11:12,987 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:11:12,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-22 23:11:13,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce359d462/ae2e8005b10741d5879f66990189d35f/FLAG728b60d69 [2021-11-22 23:11:13,671 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:11:13,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-22 23:11:13,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce359d462/ae2e8005b10741d5879f66990189d35f/FLAG728b60d69 [2021-11-22 23:11:14,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce359d462/ae2e8005b10741d5879f66990189d35f [2021-11-22 23:11:14,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:11:14,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:11:14,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:11:14,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:11:14,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:11:14,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:11:14" (1/1) ... [2021-11-22 23:11:14,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca25a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:14, skipping insertion in model container [2021-11-22 23:11:14,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:11:14" (1/1) ... [2021-11-22 23:11:14,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:11:14,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:11:15,020 WARN L230 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-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-22 23:11:15,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:11:15,890 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:11:16,027 WARN L230 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-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-22 23:11:16,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:11:16,370 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:11:16,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:16 WrapperNode [2021-11-22 23:11:16,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:11:16,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:11:16,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:11:16,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:11:16,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:16" (1/1) ... [2021-11-22 23:11:16,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:16" (1/1) ... [2021-11-22 23:11:16,738 INFO L137 Inliner]: procedures = 310, calls = 1780, calls flagged for inlining = 631, calls inlined = 1682, statements flattened = 17228 [2021-11-22 23:11:16,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:11:16,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:11:16,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:11:16,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:11:16,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:16" (1/1) ... [2021-11-22 23:11:16,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:16" (1/1) ... [2021-11-22 23:11:16,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:16" (1/1) ... [2021-11-22 23:11:16,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:16" (1/1) ... [2021-11-22 23:11:17,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:16" (1/1) ... [2021-11-22 23:11:17,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:16" (1/1) ... [2021-11-22 23:11:17,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:16" (1/1) ... [2021-11-22 23:11:17,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:11:17,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:11:17,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:11:17,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:11:17,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:16" (1/1) ... [2021-11-22 23:11:17,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:11:17,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 23:11:17,274 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) [2021-11-22 23:11:17,308 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 [2021-11-22 23:11:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 23:11:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 23:11:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-22 23:11:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 23:11:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 23:11:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-22 23:11:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 23:11:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 23:11:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 23:11:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 23:11:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 23:11:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 23:11:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 23:11:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:11:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 23:11:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-22 23:11:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:11:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:11:17,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:11:17,908 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:11:17,909 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:11:23,083 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:11:23,113 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:11:23,113 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 23:11:23,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:11:23 BoogieIcfgContainer [2021-11-22 23:11:23,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:11:23,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 23:11:23,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 23:11:23,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 23:11:23,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:11:14" (1/3) ... [2021-11-22 23:11:23,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148e9311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:11:23, skipping insertion in model container [2021-11-22 23:11:23,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:11:16" (2/3) ... [2021-11-22 23:11:23,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148e9311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:11:23, skipping insertion in model container [2021-11-22 23:11:23,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:11:23" (3/3) ... [2021-11-22 23:11:23,128 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-22 23:11:23,132 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 23:11:23,132 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 23:11:23,189 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 23:11:23,202 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 [2021-11-22 23:11:23,203 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 23:11:23,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 2941 states, 2939 states have (on average 1.3014630826811842) internal successors, (3825), 2940 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:23,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-22 23:11:23,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:23,273 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] [2021-11-22 23:11:23,275 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:23,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:23,279 INFO L85 PathProgramCache]: Analyzing trace with hash 870856017, now seen corresponding path program 1 times [2021-11-22 23:11:23,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:23,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115604575] [2021-11-22 23:11:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:23,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:11:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:11:23,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:11:23,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115604575] [2021-11-22 23:11:23,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115604575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:11:23,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:11:23,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:11:23,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796446431] [2021-11-22 23:11:23,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:11:23,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:11:23,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:23,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:11:23,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:23,713 INFO L87 Difference]: Start difference. First operand has 2941 states, 2939 states have (on average 1.3014630826811842) internal successors, (3825), 2940 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:23,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:11:23,995 INFO L93 Difference]: Finished difference Result 8665 states and 11269 transitions. [2021-11-22 23:11:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:11:23,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-11-22 23:11:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:11:24,023 INFO L225 Difference]: With dead ends: 8665 [2021-11-22 23:11:24,024 INFO L226 Difference]: Without dead ends: 5559 [2021-11-22 23:11:24,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:24,035 INFO L933 BasicCegarLoop]: 3762 mSDtfsCounter, 3595 mSDsluCounter, 3746 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3595 SdHoareTripleChecker+Valid, 7508 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:11:24,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3595 Valid, 7508 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:11:24,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5559 states. [2021-11-22 23:11:24,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5559 to 5559. [2021-11-22 23:11:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5559 states, 5558 states have (on average 1.263584023029867) internal successors, (7023), 5558 states have internal predecessors, (7023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5559 states to 5559 states and 7023 transitions. [2021-11-22 23:11:24,298 INFO L78 Accepts]: Start accepts. Automaton has 5559 states and 7023 transitions. Word has length 39 [2021-11-22 23:11:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:11:24,299 INFO L470 AbstractCegarLoop]: Abstraction has 5559 states and 7023 transitions. [2021-11-22 23:11:24,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:24,301 INFO L276 IsEmpty]: Start isEmpty. Operand 5559 states and 7023 transitions. [2021-11-22 23:11:24,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 23:11:24,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:24,304 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] [2021-11-22 23:11:24,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 23:11:24,304 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:24,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:24,306 INFO L85 PathProgramCache]: Analyzing trace with hash -581023854, now seen corresponding path program 1 times [2021-11-22 23:11:24,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:24,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228202399] [2021-11-22 23:11:24,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:24,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:11:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:11:24,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:11:24,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228202399] [2021-11-22 23:11:24,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228202399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:11:24,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:11:24,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 23:11:24,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423325222] [2021-11-22 23:11:24,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:11:24,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 23:11:24,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 23:11:24,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:11:24,482 INFO L87 Difference]: Start difference. First operand 5559 states and 7023 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:24,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:11:24,774 INFO L93 Difference]: Finished difference Result 16483 states and 20854 transitions. [2021-11-22 23:11:24,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 23:11:24,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-11-22 23:11:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:11:24,810 INFO L225 Difference]: With dead ends: 16483 [2021-11-22 23:11:24,810 INFO L226 Difference]: Without dead ends: 11015 [2021-11-22 23:11:24,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 23:11:24,823 INFO L933 BasicCegarLoop]: 3589 mSDtfsCounter, 3570 mSDsluCounter, 10656 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3570 SdHoareTripleChecker+Valid, 14245 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 23:11:24,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3570 Valid, 14245 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 23:11:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11015 states. [2021-11-22 23:11:25,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11015 to 11015. [2021-11-22 23:11:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11015 states, 11014 states have (on average 1.2643907753767931) internal successors, (13926), 11014 states have internal predecessors, (13926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:25,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11015 states to 11015 states and 13926 transitions. [2021-11-22 23:11:25,192 INFO L78 Accepts]: Start accepts. Automaton has 11015 states and 13926 transitions. Word has length 44 [2021-11-22 23:11:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:11:25,192 INFO L470 AbstractCegarLoop]: Abstraction has 11015 states and 13926 transitions. [2021-11-22 23:11:25,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 11015 states and 13926 transitions. [2021-11-22 23:11:25,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-22 23:11:25,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:25,208 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:11:25,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 23:11:25,209 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash 30955962, now seen corresponding path program 1 times [2021-11-22 23:11:25,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:25,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208453085] [2021-11-22 23:11:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:25,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:11:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:11:25,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:11:25,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208453085] [2021-11-22 23:11:25,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208453085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:11:25,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:11:25,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:11:25,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713674577] [2021-11-22 23:11:25,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:11:25,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:11:25,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:11:25,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:25,400 INFO L87 Difference]: Start difference. First operand 11015 states and 13926 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:11:25,853 INFO L93 Difference]: Finished difference Result 27793 states and 35246 transitions. [2021-11-22 23:11:25,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:11:25,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2021-11-22 23:11:25,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:11:25,905 INFO L225 Difference]: With dead ends: 27793 [2021-11-22 23:11:25,905 INFO L226 Difference]: Without dead ends: 16874 [2021-11-22 23:11:25,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:25,922 INFO L933 BasicCegarLoop]: 3594 mSDtfsCounter, 2080 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 6928 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:11:25,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2080 Valid, 6928 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:11:25,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16874 states. [2021-11-22 23:11:26,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16874 to 16171. [2021-11-22 23:11:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16171 states, 16170 states have (on average 1.2678416821273963) internal successors, (20501), 16170 states have internal predecessors, (20501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16171 states to 16171 states and 20501 transitions. [2021-11-22 23:11:26,271 INFO L78 Accepts]: Start accepts. Automaton has 16171 states and 20501 transitions. Word has length 210 [2021-11-22 23:11:26,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:11:26,272 INFO L470 AbstractCegarLoop]: Abstraction has 16171 states and 20501 transitions. [2021-11-22 23:11:26,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:26,273 INFO L276 IsEmpty]: Start isEmpty. Operand 16171 states and 20501 transitions. [2021-11-22 23:11:26,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-22 23:11:26,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:26,287 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:11:26,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 23:11:26,288 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:26,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash -125879886, now seen corresponding path program 1 times [2021-11-22 23:11:26,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:26,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859099847] [2021-11-22 23:11:26,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:26,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:11:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:11:26,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:11:26,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859099847] [2021-11-22 23:11:26,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859099847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:11:26,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:11:26,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:11:26,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103469738] [2021-11-22 23:11:26,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:11:26,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:11:26,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:26,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:11:26,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:26,414 INFO L87 Difference]: Start difference. First operand 16171 states and 20501 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:26,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:11:26,955 INFO L93 Difference]: Finished difference Result 41389 states and 52631 transitions. [2021-11-22 23:11:26,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:11:26,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2021-11-22 23:11:26,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:11:27,020 INFO L225 Difference]: With dead ends: 41389 [2021-11-22 23:11:27,021 INFO L226 Difference]: Without dead ends: 25314 [2021-11-22 23:11:27,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:27,056 INFO L933 BasicCegarLoop]: 5084 mSDtfsCounter, 2317 mSDsluCounter, 3470 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 8554 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 23:11:27,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2317 Valid, 8554 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 23:11:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25314 states. [2021-11-22 23:11:27,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25314 to 25307. [2021-11-22 23:11:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25307 states, 25306 states have (on average 1.273334387101873) internal successors, (32223), 25306 states have internal predecessors, (32223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:27,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25307 states to 25307 states and 32223 transitions. [2021-11-22 23:11:27,683 INFO L78 Accepts]: Start accepts. Automaton has 25307 states and 32223 transitions. Word has length 226 [2021-11-22 23:11:27,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:11:27,683 INFO L470 AbstractCegarLoop]: Abstraction has 25307 states and 32223 transitions. [2021-11-22 23:11:27,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:27,684 INFO L276 IsEmpty]: Start isEmpty. Operand 25307 states and 32223 transitions. [2021-11-22 23:11:27,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-22 23:11:27,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:27,709 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:11:27,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 23:11:27,709 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:27,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:27,710 INFO L85 PathProgramCache]: Analyzing trace with hash -765402967, now seen corresponding path program 1 times [2021-11-22 23:11:27,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:27,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652005761] [2021-11-22 23:11:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:27,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:11:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:11:27,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:11:27,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652005761] [2021-11-22 23:11:27,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652005761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:11:27,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:11:27,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:11:27,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905898287] [2021-11-22 23:11:27,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:11:27,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:11:27,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:27,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:11:27,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:27,862 INFO L87 Difference]: Start difference. First operand 25307 states and 32223 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:28,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:11:28,426 INFO L93 Difference]: Finished difference Result 59749 states and 76235 transitions. [2021-11-22 23:11:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:11:28,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2021-11-22 23:11:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:11:28,510 INFO L225 Difference]: With dead ends: 59749 [2021-11-22 23:11:28,511 INFO L226 Difference]: Without dead ends: 34538 [2021-11-22 23:11:28,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:28,564 INFO L933 BasicCegarLoop]: 5805 mSDtfsCounter, 2523 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 9068 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 23:11:28,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2523 Valid, 9068 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 23:11:28,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34538 states. [2021-11-22 23:11:29,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34538 to 34531. [2021-11-22 23:11:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34531 states, 34530 states have (on average 1.2761366927309585) internal successors, (44065), 34530 states have internal predecessors, (44065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34531 states to 34531 states and 44065 transitions. [2021-11-22 23:11:29,293 INFO L78 Accepts]: Start accepts. Automaton has 34531 states and 44065 transitions. Word has length 245 [2021-11-22 23:11:29,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:11:29,293 INFO L470 AbstractCegarLoop]: Abstraction has 34531 states and 44065 transitions. [2021-11-22 23:11:29,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 34531 states and 44065 transitions. [2021-11-22 23:11:29,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-22 23:11:29,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:29,330 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:11:29,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 23:11:29,331 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:29,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:29,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1746424679, now seen corresponding path program 1 times [2021-11-22 23:11:29,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:29,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952986252] [2021-11-22 23:11:29,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:29,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:11:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 23:11:29,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:11:29,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952986252] [2021-11-22 23:11:29,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952986252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:11:29,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:11:29,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 23:11:29,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054461271] [2021-11-22 23:11:29,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:11:29,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 23:11:29,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:29,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 23:11:29,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 23:11:29,502 INFO L87 Difference]: Start difference. First operand 34531 states and 44065 transitions. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:30,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:11:30,284 INFO L93 Difference]: Finished difference Result 79269 states and 101221 transitions. [2021-11-22 23:11:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 23:11:30,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 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 260 [2021-11-22 23:11:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:11:30,514 INFO L225 Difference]: With dead ends: 79269 [2021-11-22 23:11:30,514 INFO L226 Difference]: Without dead ends: 44834 [2021-11-22 23:11:30,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:11:30,555 INFO L933 BasicCegarLoop]: 6137 mSDtfsCounter, 4822 mSDsluCounter, 7448 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4822 SdHoareTripleChecker+Valid, 13585 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 23:11:30,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4822 Valid, 13585 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 23:11:30,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44834 states. [2021-11-22 23:11:31,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44834 to 34539. [2021-11-22 23:11:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34539 states, 34538 states have (on average 1.2759569170189358) internal successors, (44069), 34538 states have internal predecessors, (44069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34539 states to 34539 states and 44069 transitions. [2021-11-22 23:11:31,233 INFO L78 Accepts]: Start accepts. Automaton has 34539 states and 44069 transitions. Word has length 260 [2021-11-22 23:11:31,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:11:31,234 INFO L470 AbstractCegarLoop]: Abstraction has 34539 states and 44069 transitions. [2021-11-22 23:11:31,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:31,234 INFO L276 IsEmpty]: Start isEmpty. Operand 34539 states and 44069 transitions. [2021-11-22 23:11:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-11-22 23:11:31,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:31,269 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:11:31,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 23:11:31,270 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1752281388, now seen corresponding path program 1 times [2021-11-22 23:11:31,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:31,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021469604] [2021-11-22 23:11:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:31,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:11:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:31,611 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 23:11:31,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:11:31,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021469604] [2021-11-22 23:11:31,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021469604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:11:31,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:11:31,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:11:31,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220264509] [2021-11-22 23:11:31,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:11:31,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:11:31,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:31,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:11:31,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:31,614 INFO L87 Difference]: Start difference. First operand 34539 states and 44069 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:11:32,460 INFO L93 Difference]: Finished difference Result 69174 states and 88415 transitions. [2021-11-22 23:11:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:11:32,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 331 [2021-11-22 23:11:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:11:32,527 INFO L225 Difference]: With dead ends: 69174 [2021-11-22 23:11:32,528 INFO L226 Difference]: Without dead ends: 34731 [2021-11-22 23:11:32,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:32,577 INFO L933 BasicCegarLoop]: 3577 mSDtfsCounter, 0 mSDsluCounter, 3469 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7046 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:11:32,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7046 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:11:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34731 states. [2021-11-22 23:11:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34731 to 34731. [2021-11-22 23:11:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34731 states, 34730 states have (on average 1.2744313273826662) internal successors, (44261), 34730 states have internal predecessors, (44261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34731 states to 34731 states and 44261 transitions. [2021-11-22 23:11:33,438 INFO L78 Accepts]: Start accepts. Automaton has 34731 states and 44261 transitions. Word has length 331 [2021-11-22 23:11:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:11:33,438 INFO L470 AbstractCegarLoop]: Abstraction has 34731 states and 44261 transitions. [2021-11-22 23:11:33,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 34731 states and 44261 transitions. [2021-11-22 23:11:33,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-11-22 23:11:33,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:33,473 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:11:33,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 23:11:33,473 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:33,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:33,474 INFO L85 PathProgramCache]: Analyzing trace with hash -540574166, now seen corresponding path program 1 times [2021-11-22 23:11:33,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:33,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561492969] [2021-11-22 23:11:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:33,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:11:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 23:11:33,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:11:33,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561492969] [2021-11-22 23:11:33,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561492969] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 23:11:33,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387786188] [2021-11-22 23:11:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:33,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:11:33,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 23:11:33,676 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) [2021-11-22 23:11:33,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 23:11:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:34,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 4946 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 23:11:34,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:11:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 23:11:35,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 23:11:35,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387786188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:11:35,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 23:11:35,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-22 23:11:35,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279100480] [2021-11-22 23:11:35,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:11:35,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:11:35,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:11:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:11:35,158 INFO L87 Difference]: Start difference. First operand 34731 states and 44261 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:36,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:11:36,605 INFO L93 Difference]: Finished difference Result 103945 states and 132485 transitions. [2021-11-22 23:11:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:11:36,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 331 [2021-11-22 23:11:36,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:11:36,731 INFO L225 Difference]: With dead ends: 103945 [2021-11-22 23:11:36,731 INFO L226 Difference]: Without dead ends: 69310 [2021-11-22 23:11:36,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:11:36,805 INFO L933 BasicCegarLoop]: 7057 mSDtfsCounter, 3468 mSDsluCounter, 3575 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 10632 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 23:11:36,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3468 Valid, 10632 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 23:11:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69310 states. [2021-11-22 23:11:37,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69310 to 34759. [2021-11-22 23:11:37,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34759 states, 34758 states have (on average 1.2742102537545312) internal successors, (44289), 34758 states have internal predecessors, (44289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34759 states to 34759 states and 44289 transitions. [2021-11-22 23:11:37,853 INFO L78 Accepts]: Start accepts. Automaton has 34759 states and 44289 transitions. Word has length 331 [2021-11-22 23:11:37,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:11:37,854 INFO L470 AbstractCegarLoop]: Abstraction has 34759 states and 44289 transitions. [2021-11-22 23:11:37,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:37,854 INFO L276 IsEmpty]: Start isEmpty. Operand 34759 states and 44289 transitions. [2021-11-22 23:11:37,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-11-22 23:11:37,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:37,881 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:11:37,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 23:11:38,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:11:38,105 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:38,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:38,105 INFO L85 PathProgramCache]: Analyzing trace with hash 333091436, now seen corresponding path program 1 times [2021-11-22 23:11:38,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:38,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951481970] [2021-11-22 23:11:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:38,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:11:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 23:11:38,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:11:38,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951481970] [2021-11-22 23:11:38,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951481970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:11:38,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:11:38,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:11:38,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791349245] [2021-11-22 23:11:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:11:38,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:11:38,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:11:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:38,383 INFO L87 Difference]: Start difference. First operand 34759 states and 44289 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:39,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:11:39,554 INFO L93 Difference]: Finished difference Result 80233 states and 102728 transitions. [2021-11-22 23:11:39,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:11:39,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 331 [2021-11-22 23:11:39,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:11:39,639 INFO L225 Difference]: With dead ends: 80233 [2021-11-22 23:11:39,639 INFO L226 Difference]: Without dead ends: 45570 [2021-11-22 23:11:39,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:39,700 INFO L933 BasicCegarLoop]: 4606 mSDtfsCounter, 2093 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 7952 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:11:39,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2093 Valid, 7952 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:11:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45570 states. [2021-11-22 23:11:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45570 to 44851. [2021-11-22 23:11:40,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44851 states, 44850 states have (on average 1.2780379041248606) internal successors, (57320), 44850 states have internal predecessors, (57320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:40,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44851 states to 44851 states and 57320 transitions. [2021-11-22 23:11:40,847 INFO L78 Accepts]: Start accepts. Automaton has 44851 states and 57320 transitions. Word has length 331 [2021-11-22 23:11:40,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:11:40,848 INFO L470 AbstractCegarLoop]: Abstraction has 44851 states and 57320 transitions. [2021-11-22 23:11:40,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:40,849 INFO L276 IsEmpty]: Start isEmpty. Operand 44851 states and 57320 transitions. [2021-11-22 23:11:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-11-22 23:11:40,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:40,892 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:11:40,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 23:11:40,892 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:40,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:40,893 INFO L85 PathProgramCache]: Analyzing trace with hash 689615220, now seen corresponding path program 1 times [2021-11-22 23:11:40,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:40,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953410653] [2021-11-22 23:11:40,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:40,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:11:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 23:11:41,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:11:41,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953410653] [2021-11-22 23:11:41,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953410653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:11:41,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:11:41,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:11:41,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672952699] [2021-11-22 23:11:41,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:11:41,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:11:41,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:11:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:41,116 INFO L87 Difference]: Start difference. First operand 44851 states and 57320 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:11:42,516 INFO L93 Difference]: Finished difference Result 101283 states and 129647 transitions. [2021-11-22 23:11:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:11:42,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 347 [2021-11-22 23:11:42,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:11:42,617 INFO L225 Difference]: With dead ends: 101283 [2021-11-22 23:11:42,617 INFO L226 Difference]: Without dead ends: 56528 [2021-11-22 23:11:42,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:42,660 INFO L933 BasicCegarLoop]: 4332 mSDtfsCounter, 2544 mSDsluCounter, 3253 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2544 SdHoareTripleChecker+Valid, 7585 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:11:42,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2544 Valid, 7585 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:11:42,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56528 states. [2021-11-22 23:11:43,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56528 to 56521. [2021-11-22 23:11:43,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56521 states, 56520 states have (on average 1.2801840056617126) internal successors, (72356), 56520 states have internal predecessors, (72356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56521 states to 56521 states and 72356 transitions. [2021-11-22 23:11:44,096 INFO L78 Accepts]: Start accepts. Automaton has 56521 states and 72356 transitions. Word has length 347 [2021-11-22 23:11:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:11:44,096 INFO L470 AbstractCegarLoop]: Abstraction has 56521 states and 72356 transitions. [2021-11-22 23:11:44,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:44,097 INFO L276 IsEmpty]: Start isEmpty. Operand 56521 states and 72356 transitions. [2021-11-22 23:11:44,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-11-22 23:11:44,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:44,155 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:11:44,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 23:11:44,155 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:44,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:44,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1583079326, now seen corresponding path program 1 times [2021-11-22 23:11:44,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:44,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655204272] [2021-11-22 23:11:44,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:44,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:11:44,269 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 23:11:44,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020299506] [2021-11-22 23:11:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:44,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:11:44,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 23:11:44,271 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) [2021-11-22 23:11:44,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 23:11:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:45,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 4996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 23:11:45,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:11:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-22 23:11:46,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 23:11:46,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:11:46,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655204272] [2021-11-22 23:11:46,173 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 23:11:46,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020299506] [2021-11-22 23:11:46,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020299506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:11:46,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:11:46,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:11:46,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293207009] [2021-11-22 23:11:46,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:11:46,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:11:46,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:46,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:11:46,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:46,176 INFO L87 Difference]: Start difference. First operand 56521 states and 72356 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:11:48,462 INFO L93 Difference]: Finished difference Result 168363 states and 215622 transitions. [2021-11-22 23:11:48,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:11:48,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 350 [2021-11-22 23:11:48,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:11:48,871 INFO L225 Difference]: With dead ends: 168363 [2021-11-22 23:11:48,871 INFO L226 Difference]: Without dead ends: 111938 [2021-11-22 23:11:48,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:48,974 INFO L933 BasicCegarLoop]: 6745 mSDtfsCounter, 3390 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 10322 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 23:11:48,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3390 Valid, 10322 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 23:11:49,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111938 states. [2021-11-22 23:11:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111938 to 56577. [2021-11-22 23:11:50,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56577 states, 56576 states have (on average 1.2799066742081449) internal successors, (72412), 56576 states have internal predecessors, (72412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56577 states to 56577 states and 72412 transitions. [2021-11-22 23:11:50,996 INFO L78 Accepts]: Start accepts. Automaton has 56577 states and 72412 transitions. Word has length 350 [2021-11-22 23:11:50,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:11:50,997 INFO L470 AbstractCegarLoop]: Abstraction has 56577 states and 72412 transitions. [2021-11-22 23:11:50,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:50,997 INFO L276 IsEmpty]: Start isEmpty. Operand 56577 states and 72412 transitions. [2021-11-22 23:11:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-11-22 23:11:51,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:51,041 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:11:51,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-22 23:11:51,263 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 [2021-11-22 23:11:51,264 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:51,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:51,264 INFO L85 PathProgramCache]: Analyzing trace with hash -48944158, now seen corresponding path program 1 times [2021-11-22 23:11:51,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:51,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967041015] [2021-11-22 23:11:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:51,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:11:51,675 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 23:11:51,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724898402] [2021-11-22 23:11:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:51,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:11:51,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 23:11:51,678 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) [2021-11-22 23:11:51,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 23:11:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:11:52,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 5129 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 23:11:52,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:11:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-22 23:11:53,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 23:11:53,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:11:53,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967041015] [2021-11-22 23:11:53,515 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 23:11:53,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724898402] [2021-11-22 23:11:53,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724898402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:11:53,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:11:53,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 23:11:53,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118988504] [2021-11-22 23:11:53,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:11:53,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:11:53,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:11:53,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:11:53,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:53,518 INFO L87 Difference]: Start difference. First operand 56577 states and 72412 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 2 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:56,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:11:56,165 INFO L93 Difference]: Finished difference Result 169427 states and 216826 transitions. [2021-11-22 23:11:56,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:11:56,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 2 states have internal predecessors, (333), 0 states have call successors, (0), 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 352 [2021-11-22 23:11:56,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:11:56,415 INFO L225 Difference]: With dead ends: 169427 [2021-11-22 23:11:56,415 INFO L226 Difference]: Without dead ends: 112946 [2021-11-22 23:11:56,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:11:56,494 INFO L933 BasicCegarLoop]: 3589 mSDtfsCounter, 3255 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3255 SdHoareTripleChecker+Valid, 7060 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 23:11:56,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3255 Valid, 7060 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 23:11:56,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112946 states. [2021-11-22 23:11:59,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112946 to 99883. [2021-11-22 23:11:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99883 states, 99882 states have (on average 1.2883903005546544) internal successors, (128687), 99882 states have internal predecessors, (128687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:59,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99883 states to 99883 states and 128687 transitions. [2021-11-22 23:11:59,609 INFO L78 Accepts]: Start accepts. Automaton has 99883 states and 128687 transitions. Word has length 352 [2021-11-22 23:11:59,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:11:59,609 INFO L470 AbstractCegarLoop]: Abstraction has 99883 states and 128687 transitions. [2021-11-22 23:11:59,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 2 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 23:11:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand 99883 states and 128687 transitions. [2021-11-22 23:11:59,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-11-22 23:11:59,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:11:59,684 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:11:59,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 23:11:59,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:11:59,888 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:11:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:11:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash 402423531, now seen corresponding path program 1 times [2021-11-22 23:11:59,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:11:59,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534859767] [2021-11-22 23:11:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:11:59,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:12:00,001 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 23:12:00,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215210150] [2021-11-22 23:12:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:12:00,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 23:12:00,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 23:12:00,003 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) [2021-11-22 23:12:00,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 23:12:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:12:01,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 5130 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 23:12:01,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:12:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-22 23:12:02,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 23:12:02,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:12:02,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534859767] [2021-11-22 23:12:02,119 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 23:12:02,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215210150] [2021-11-22 23:12:02,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215210150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:12:02,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:12:02,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 23:12:02,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017769891] [2021-11-22 23:12:02,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:12:02,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:12:02,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:12:02,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:12:02,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:12:02,121 INFO L87 Difference]: Start difference. First operand 99883 states and 128687 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 2 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)