./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_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-wip.dd.seqcomp-5f08f0f [2021-11-05 16:29:02,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:29:02,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:29:02,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:29:02,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:29:02,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:29:02,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:29:02,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:29:02,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:29:02,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:29:02,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:29:02,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:29:02,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:29:02,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:29:02,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:29:02,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:29:02,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:29:02,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:29:02,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:29:02,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:29:02,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:29:02,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:29:02,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:29:02,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:29:02,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:29:02,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:29:02,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:29:02,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:29:02,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:29:02,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:29:02,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:29:02,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:29:02,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:29:02,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:29:02,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:29:02,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:29:02,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:29:02,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:29:02,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:29:02,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:29:02,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:29:02,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:29:02,768 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:29:02,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:29:02,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:29:02,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:29:02,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:29:02,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:29:02,774 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:29:02,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:29:02,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:29:02,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:29:02,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:29:02,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:29:02,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:29:02,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:29:02,776 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:29:02,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:29:02,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:29:02,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:29:02,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:29:02,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:29:02,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:29:02,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:29:02,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:29:02,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:29:02,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:29:02,778 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:29:02,778 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:29:02,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:29:02,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:29:02,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb [2021-11-05 16:29:03,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:29:03,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:29:03,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:29:03,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:29:03,194 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:29:03,197 INFO L432 ainManager$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 [2021-11-05 16:29:03,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71cca57a/d0f757d28b574776a783c5fcba5530f9/FLAGa1c9a26c2 [2021-11-05 16:29:04,166 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:29:04,167 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 [2021-11-05 16:29:04,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71cca57a/d0f757d28b574776a783c5fcba5530f9/FLAGa1c9a26c2 [2021-11-05 16:29:04,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e71cca57a/d0f757d28b574776a783c5fcba5530f9 [2021-11-05 16:29:04,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:29:04,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:29:04,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:29:04,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:29:04,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:29:04,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:29:04" (1/1) ... [2021-11-05 16:29:04,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a299a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:04, skipping insertion in model container [2021-11-05 16:29:04,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:29:04" (1/1) ... [2021-11-05 16:29:04,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:29:04,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:29:06,032 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-05 16:29:07,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:29:07,317 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:29:07,475 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-05 16:29:07,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:29:07,982 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:29:07,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:07 WrapperNode [2021-11-05 16:29:07,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:29:07,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:29:07,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:29:07,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:29:07,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:07" (1/1) ... [2021-11-05 16:29:08,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:07" (1/1) ... [2021-11-05 16:29:08,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:29:08,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:29:08,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:29:08,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:29:08,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:07" (1/1) ... [2021-11-05 16:29:08,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:07" (1/1) ... [2021-11-05 16:29:08,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:07" (1/1) ... [2021-11-05 16:29:08,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:07" (1/1) ... [2021-11-05 16:29:09,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:07" (1/1) ... [2021-11-05 16:29:09,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:07" (1/1) ... [2021-11-05 16:29:09,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:07" (1/1) ... [2021-11-05 16:29:09,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:29:09,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:29:09,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:29:09,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:29:09,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:07" (1/1) ... [2021-11-05 16:29:09,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:29:09,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:29:09,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 16:29:09,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 16:29:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:29:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:29:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-05 16:29:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:29:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:29:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-05 16:29:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:29:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:29:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:29:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:29:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:29:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:29:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:29:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:29:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 16:29:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:29:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:29:09,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:29:31,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:29:31,284 INFO L299 CfgBuilder]: Removed 3362 assume(true) statements. [2021-11-05 16:29:31,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:29:31 BoogieIcfgContainer [2021-11-05 16:29:31,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:29:31,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:29:31,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:29:31,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:29:31,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:29:04" (1/3) ... [2021-11-05 16:29:31,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132326d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:29:31, skipping insertion in model container [2021-11-05 16:29:31,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:29:07" (2/3) ... [2021-11-05 16:29:31,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132326d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:29:31, skipping insertion in model container [2021-11-05 16:29:31,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:29:31" (3/3) ... [2021-11-05 16:29:31,299 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 [2021-11-05 16:29:31,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:29:31,305 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-05 16:29:31,357 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:29:31,364 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 16:29:31,365 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-05 16:29:31,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 2776 states, 2774 states have (on average 1.3193943763518385) internal successors, (3660), 2775 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:31,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-05 16:29:31,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:29:31,451 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] [2021-11-05 16:29:31,452 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:29:31,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:29:31,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1461368549, now seen corresponding path program 1 times [2021-11-05 16:29:31,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:29:31,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181084722] [2021-11-05 16:29:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:29:31,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:29:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:29:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:29:32,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:29:32,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181084722] [2021-11-05 16:29:32,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181084722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:29:32,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:29:32,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:29:32,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559610041] [2021-11-05 16:29:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:29:32,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:29:32,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:29:32,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:29:32,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:29:32,196 INFO L87 Difference]: Start difference. First operand has 2776 states, 2774 states have (on average 1.3193943763518385) internal successors, (3660), 2775 states have internal predecessors, (3660), 0 states have call successors, (0), 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 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:34,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:29:34,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:29:34,699 INFO L93 Difference]: Finished difference Result 8175 states and 10779 transitions. [2021-11-05 16:29:34,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:29:34,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-11-05 16:29:34,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:29:34,740 INFO L225 Difference]: With dead ends: 8175 [2021-11-05 16:29:34,741 INFO L226 Difference]: Without dead ends: 5234 [2021-11-05 16:29:34,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:29:34,760 INFO L933 BasicCegarLoop]: 3598 mSDtfsCounter, 3434 mSDsluCounter, 3582 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2098.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3434 SdHoareTripleChecker+Valid, 7180 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.29ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2257.86ms IncrementalHoareTripleChecker+Time [2021-11-05 16:29:34,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3434 Valid, 7180 Invalid, 15 Unknown, 0 Unchecked, 24.29ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2257.86ms Time] [2021-11-05 16:29:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5234 states. [2021-11-05 16:29:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5234 to 5234. [2021-11-05 16:29:34,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.2799541372061916) internal successors, (6698), 5233 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6698 transitions. [2021-11-05 16:29:35,009 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6698 transitions. Word has length 37 [2021-11-05 16:29:35,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:29:35,010 INFO L470 AbstractCegarLoop]: Abstraction has 5234 states and 6698 transitions. [2021-11-05 16:29:35,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:35,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6698 transitions. [2021-11-05 16:29:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 16:29:35,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:29:35,017 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] [2021-11-05 16:29:35,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:29:35,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:29:35,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:29:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash 891006068, now seen corresponding path program 1 times [2021-11-05 16:29:35,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:29:35,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142860721] [2021-11-05 16:29:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:29:35,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:29:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:29:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:29:35,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:29:35,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142860721] [2021-11-05 16:29:35,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142860721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:29:35,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:29:35,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:29:35,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355638536] [2021-11-05 16:29:35,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:29:35,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:29:35,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:29:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:29:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:29:35,408 INFO L87 Difference]: Start difference. First operand 5234 states and 6698 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:35,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:29:35,893 INFO L93 Difference]: Finished difference Result 15510 states and 19881 transitions. [2021-11-05 16:29:35,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:29:35,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-05 16:29:35,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:29:35,944 INFO L225 Difference]: With dead ends: 15510 [2021-11-05 16:29:35,946 INFO L226 Difference]: Without dead ends: 10367 [2021-11-05 16:29:35,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.37ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:29:35,965 INFO L933 BasicCegarLoop]: 3425 mSDtfsCounter, 3407 mSDsluCounter, 10165 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3407 SdHoareTripleChecker+Valid, 13590 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.23ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 177.51ms IncrementalHoareTripleChecker+Time [2021-11-05 16:29:35,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3407 Valid, 13590 Invalid, 37 Unknown, 0 Unchecked, 20.23ms Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 177.51ms Time] [2021-11-05 16:29:35,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10367 states. [2021-11-05 16:29:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10367 to 10367. [2021-11-05 16:29:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10367 states, 10366 states have (on average 1.280918387034536) internal successors, (13278), 10366 states have internal predecessors, (13278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10367 states to 10367 states and 13278 transitions. [2021-11-05 16:29:36,400 INFO L78 Accepts]: Start accepts. Automaton has 10367 states and 13278 transitions. Word has length 43 [2021-11-05 16:29:36,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:29:36,400 INFO L470 AbstractCegarLoop]: Abstraction has 10367 states and 13278 transitions. [2021-11-05 16:29:36,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 10367 states and 13278 transitions. [2021-11-05 16:29:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-05 16:29:36,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:29:36,424 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] [2021-11-05 16:29:36,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:29:36,424 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:29:36,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:29:36,428 INFO L85 PathProgramCache]: Analyzing trace with hash 32581807, now seen corresponding path program 1 times [2021-11-05 16:29:36,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:29:36,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247928559] [2021-11-05 16:29:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:29:36,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:29:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:29:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:29:36,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:29:36,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247928559] [2021-11-05 16:29:36,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247928559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:29:36,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:29:36,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:29:36,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695747899] [2021-11-05 16:29:36,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:29:36,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:29:36,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:29:36,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:29:36,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:29:36,746 INFO L87 Difference]: Start difference. First operand 10367 states and 13278 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:37,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:29:37,382 INFO L93 Difference]: Finished difference Result 26159 states and 33612 transitions. [2021-11-05 16:29:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:29:37,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 201 [2021-11-05 16:29:37,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:29:37,463 INFO L225 Difference]: With dead ends: 26159 [2021-11-05 16:29:37,464 INFO L226 Difference]: Without dead ends: 15887 [2021-11-05 16:29:37,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:29:37,499 INFO L933 BasicCegarLoop]: 3430 mSDtfsCounter, 1988 mSDsluCounter, 3176 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 280.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 6606 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.73ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 318.94ms IncrementalHoareTripleChecker+Time [2021-11-05 16:29:37,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1988 Valid, 6606 Invalid, 82 Unknown, 0 Unchecked, 10.73ms Time], IncrementalHoareTripleChecker [10 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 318.94ms Time] [2021-11-05 16:29:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15887 states. [2021-11-05 16:29:37,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15887 to 15209. [2021-11-05 16:29:37,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15209 states, 15208 states have (on average 1.284784324039979) internal successors, (19539), 15208 states have internal predecessors, (19539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15209 states to 15209 states and 19539 transitions. [2021-11-05 16:29:37,951 INFO L78 Accepts]: Start accepts. Automaton has 15209 states and 19539 transitions. Word has length 201 [2021-11-05 16:29:37,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:29:37,953 INFO L470 AbstractCegarLoop]: Abstraction has 15209 states and 19539 transitions. [2021-11-05 16:29:37,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:37,955 INFO L276 IsEmpty]: Start isEmpty. Operand 15209 states and 19539 transitions. [2021-11-05 16:29:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-05 16:29:37,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:29:37,978 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] [2021-11-05 16:29:37,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:29:37,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:29:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:29:37,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1781732763, now seen corresponding path program 1 times [2021-11-05 16:29:37,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:29:37,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27654980] [2021-11-05 16:29:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:29:37,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:29:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:29:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:29:38,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:29:38,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27654980] [2021-11-05 16:29:38,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27654980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:29:38,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:29:38,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:29:38,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609181461] [2021-11-05 16:29:38,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:29:38,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:29:38,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:29:38,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:29:38,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:29:38,295 INFO L87 Difference]: Start difference. First operand 15209 states and 19539 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:29:38,929 INFO L93 Difference]: Finished difference Result 38949 states and 50191 transitions. [2021-11-05 16:29:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:29:38,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2021-11-05 16:29:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:29:39,001 INFO L225 Difference]: With dead ends: 38949 [2021-11-05 16:29:39,002 INFO L226 Difference]: Without dead ends: 23835 [2021-11-05 16:29:39,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:29:39,044 INFO L933 BasicCegarLoop]: 4848 mSDtfsCounter, 2215 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 203.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 8155 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.76ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 220.90ms IncrementalHoareTripleChecker+Time [2021-11-05 16:29:39,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2215 Valid, 8155 Invalid, 20 Unknown, 0 Unchecked, 9.76ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 220.90ms Time] [2021-11-05 16:29:39,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23835 states. [2021-11-05 16:29:39,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23835 to 23829. [2021-11-05 16:29:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23829 states, 23828 states have (on average 1.2902887359409099) internal successors, (30745), 23828 states have internal predecessors, (30745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23829 states to 23829 states and 30745 transitions. [2021-11-05 16:29:39,846 INFO L78 Accepts]: Start accepts. Automaton has 23829 states and 30745 transitions. Word has length 216 [2021-11-05 16:29:39,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:29:39,848 INFO L470 AbstractCegarLoop]: Abstraction has 23829 states and 30745 transitions. [2021-11-05 16:29:39,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:39,848 INFO L276 IsEmpty]: Start isEmpty. Operand 23829 states and 30745 transitions. [2021-11-05 16:29:39,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-05 16:29:39,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:29:39,877 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] [2021-11-05 16:29:39,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:29:39,878 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:29:39,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:29:39,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2130056462, now seen corresponding path program 1 times [2021-11-05 16:29:39,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:29:39,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737149623] [2021-11-05 16:29:39,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:29:39,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:29:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:29:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:29:40,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:29:40,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737149623] [2021-11-05 16:29:40,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737149623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:29:40,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:29:40,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:29:40,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828648603] [2021-11-05 16:29:40,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:29:40,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:29:40,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:29:40,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:29:40,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:29:40,429 INFO L87 Difference]: Start difference. First operand 23829 states and 30745 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:42,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:29:43,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:29:43,396 INFO L93 Difference]: Finished difference Result 56277 states and 72763 transitions. [2021-11-05 16:29:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:29:43,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2021-11-05 16:29:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:29:43,500 INFO L225 Difference]: With dead ends: 56277 [2021-11-05 16:29:43,500 INFO L226 Difference]: Without dead ends: 32543 [2021-11-05 16:29:43,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:29:43,561 INFO L933 BasicCegarLoop]: 5540 mSDtfsCounter, 2413 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2121.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 8649 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.99ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2267.20ms IncrementalHoareTripleChecker+Time [2021-11-05 16:29:43,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2413 Valid, 8649 Invalid, 30 Unknown, 0 Unchecked, 11.99ms Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2267.20ms Time] [2021-11-05 16:29:43,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32543 states. [2021-11-05 16:29:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32543 to 32537. [2021-11-05 16:29:44,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32537 states, 32536 states have (on average 1.2930599950823702) internal successors, (42071), 32536 states have internal predecessors, (42071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32537 states to 32537 states and 42071 transitions. [2021-11-05 16:29:44,532 INFO L78 Accepts]: Start accepts. Automaton has 32537 states and 42071 transitions. Word has length 233 [2021-11-05 16:29:44,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:29:44,535 INFO L470 AbstractCegarLoop]: Abstraction has 32537 states and 42071 transitions. [2021-11-05 16:29:44,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 32537 states and 42071 transitions. [2021-11-05 16:29:44,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-05 16:29:44,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:29:44,577 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] [2021-11-05 16:29:44,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:29:44,578 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:29:44,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:29:44,579 INFO L85 PathProgramCache]: Analyzing trace with hash -727705278, now seen corresponding path program 1 times [2021-11-05 16:29:44,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:29:44,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122444134] [2021-11-05 16:29:44,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:29:44,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:29:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:29:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-05 16:29:45,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:29:45,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122444134] [2021-11-05 16:29:45,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122444134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:29:45,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:29:45,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:29:45,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370155051] [2021-11-05 16:29:45,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:29:45,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:29:45,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:29:45,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:29:45,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:29:45,006 INFO L87 Difference]: Start difference. First operand 32537 states and 42071 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:47,056 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:29:48,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:29:48,153 INFO L93 Difference]: Finished difference Result 74721 states and 96673 transitions. [2021-11-05 16:29:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:29:48,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 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 248 [2021-11-05 16:29:48,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:29:48,273 INFO L225 Difference]: With dead ends: 74721 [2021-11-05 16:29:48,273 INFO L226 Difference]: Without dead ends: 42279 [2021-11-05 16:29:48,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:29:48,321 INFO L933 BasicCegarLoop]: 5862 mSDtfsCounter, 4609 mSDsluCounter, 7111 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2090.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4609 SdHoareTripleChecker+Valid, 12973 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2263.53ms IncrementalHoareTripleChecker+Time [2021-11-05 16:29:48,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4609 Valid, 12973 Invalid, 14 Unknown, 0 Unchecked, 20.91ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2263.53ms Time] [2021-11-05 16:29:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42279 states. [2021-11-05 16:29:49,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42279 to 32545. [2021-11-05 16:29:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32545 states, 32544 states have (on average 1.2928650442477876) internal successors, (42075), 32544 states have internal predecessors, (42075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:49,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32545 states to 32545 states and 42075 transitions. [2021-11-05 16:29:49,412 INFO L78 Accepts]: Start accepts. Automaton has 32545 states and 42075 transitions. Word has length 248 [2021-11-05 16:29:49,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:29:49,413 INFO L470 AbstractCegarLoop]: Abstraction has 32545 states and 42075 transitions. [2021-11-05 16:29:49,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:49,413 INFO L276 IsEmpty]: Start isEmpty. Operand 32545 states and 42075 transitions. [2021-11-05 16:29:49,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-05 16:29:49,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:29:49,465 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] [2021-11-05 16:29:49,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:29:49,465 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:29:49,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:29:49,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1244825967, now seen corresponding path program 1 times [2021-11-05 16:29:49,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:29:49,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728792448] [2021-11-05 16:29:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:29:49,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:29:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:29:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-05 16:29:49,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:29:49,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728792448] [2021-11-05 16:29:49,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728792448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:29:49,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:29:49,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:29:49,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392492594] [2021-11-05 16:29:49,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:29:49,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:29:49,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:29:49,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:29:49,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:29:49,776 INFO L87 Difference]: Start difference. First operand 32545 states and 42075 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:50,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:29:50,475 INFO L93 Difference]: Finished difference Result 65043 states and 84100 transitions. [2021-11-05 16:29:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:29:50,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 318 [2021-11-05 16:29:50,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:29:50,563 INFO L225 Difference]: With dead ends: 65043 [2021-11-05 16:29:50,563 INFO L226 Difference]: Without dead ends: 32593 [2021-11-05 16:29:50,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:29:50,611 INFO L933 BasicCegarLoop]: 3430 mSDtfsCounter, 12 mSDsluCounter, 3424 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6854 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.45ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.85ms IncrementalHoareTripleChecker+Time [2021-11-05 16:29:50,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 6854 Invalid, 7 Unknown, 0 Unchecked, 4.45ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 22.85ms Time] [2021-11-05 16:29:50,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32593 states. [2021-11-05 16:29:51,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32593 to 32549. [2021-11-05 16:29:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32549 states, 32548 states have (on average 1.2928290524763426) internal successors, (42079), 32548 states have internal predecessors, (42079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32549 states to 32549 states and 42079 transitions. [2021-11-05 16:29:51,441 INFO L78 Accepts]: Start accepts. Automaton has 32549 states and 42079 transitions. Word has length 318 [2021-11-05 16:29:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:29:51,442 INFO L470 AbstractCegarLoop]: Abstraction has 32549 states and 42079 transitions. [2021-11-05 16:29:51,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 32549 states and 42079 transitions. [2021-11-05 16:29:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-05 16:29:51,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:29:51,645 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] [2021-11-05 16:29:51,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:29:51,646 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:29:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:29:51,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1114219471, now seen corresponding path program 1 times [2021-11-05 16:29:51,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:29:51,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389522905] [2021-11-05 16:29:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:29:51,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:29:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:29:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:29:52,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:29:52,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389522905] [2021-11-05 16:29:52,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389522905] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:29:52,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567616317] [2021-11-05 16:29:52,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:29:52,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:29:52,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:29:52,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:29:52,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 16:29:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:29:53,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 5012 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:29:53,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:29:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 16:29:54,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:29:54,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567616317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:29:54,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:29:54,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 16:29:54,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856932387] [2021-11-05 16:29:54,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:29:54,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:29:54,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:29:54,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:29:54,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:29:54,986 INFO L87 Difference]: Start difference. First operand 32549 states and 42079 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:55,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:29:55,998 INFO L93 Difference]: Finished difference Result 75199 states and 97694 transitions. [2021-11-05 16:29:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:29:55,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 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 318 [2021-11-05 16:29:55,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:29:56,077 INFO L225 Difference]: With dead ends: 75199 [2021-11-05 16:29:56,077 INFO L226 Difference]: Without dead ends: 42745 [2021-11-05 16:29:56,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.84ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:29:56,125 INFO L933 BasicCegarLoop]: 3399 mSDtfsCounter, 2185 mSDsluCounter, 3013 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 302.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 6412 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.81ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 347.43ms IncrementalHoareTripleChecker+Time [2021-11-05 16:29:56,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2185 Valid, 6412 Invalid, 128 Unknown, 0 Unchecked, 5.81ms Time], IncrementalHoareTripleChecker [40 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 347.43ms Time] [2021-11-05 16:29:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42745 states. [2021-11-05 16:29:57,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42745 to 42063. [2021-11-05 16:29:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42063 states, 42062 states have (on average 1.298749465075365) internal successors, (54628), 42062 states have internal predecessors, (54628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42063 states to 42063 states and 54628 transitions. [2021-11-05 16:29:57,155 INFO L78 Accepts]: Start accepts. Automaton has 42063 states and 54628 transitions. Word has length 318 [2021-11-05 16:29:57,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:29:57,155 INFO L470 AbstractCegarLoop]: Abstraction has 42063 states and 54628 transitions. [2021-11-05 16:29:57,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:57,156 INFO L276 IsEmpty]: Start isEmpty. Operand 42063 states and 54628 transitions. [2021-11-05 16:29:57,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-11-05 16:29:57,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:29:57,203 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] [2021-11-05 16:29:57,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 16:29:57,419 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 [2021-11-05 16:29:57,420 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:29:57,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:29:57,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1782540335, now seen corresponding path program 1 times [2021-11-05 16:29:57,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:29:57,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024727286] [2021-11-05 16:29:57,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:29:57,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:29:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:29:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 16:29:57,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:29:57,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024727286] [2021-11-05 16:29:57,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024727286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:29:57,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:29:57,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:29:57,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878595008] [2021-11-05 16:29:57,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:29:57,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:29:57,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:29:57,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:29:57,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:29:57,823 INFO L87 Difference]: Start difference. First operand 42063 states and 54628 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:29:59,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:29:59,044 INFO L93 Difference]: Finished difference Result 95019 states and 123595 transitions. [2021-11-05 16:29:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:29:59,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 333 [2021-11-05 16:29:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:29:59,146 INFO L225 Difference]: With dead ends: 95019 [2021-11-05 16:29:59,146 INFO L226 Difference]: Without dead ends: 53051 [2021-11-05 16:29:59,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:29:59,193 INFO L933 BasicCegarLoop]: 3421 mSDtfsCounter, 2826 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2826 SdHoareTripleChecker+Valid, 6131 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.95ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.31ms IncrementalHoareTripleChecker+Time [2021-11-05 16:29:59,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2826 Valid, 6131 Invalid, 29 Unknown, 0 Unchecked, 8.95ms Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 119.31ms Time] [2021-11-05 16:29:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53051 states. [2021-11-05 16:30:00,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53051 to 53045. [2021-11-05 16:30:00,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53045 states, 53044 states have (on average 1.301636377347108) internal successors, (69044), 53044 states have internal predecessors, (69044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:30:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53045 states to 53045 states and 69044 transitions. [2021-11-05 16:30:00,549 INFO L78 Accepts]: Start accepts. Automaton has 53045 states and 69044 transitions. Word has length 333 [2021-11-05 16:30:00,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:30:00,549 INFO L470 AbstractCegarLoop]: Abstraction has 53045 states and 69044 transitions. [2021-11-05 16:30:00,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:30:00,550 INFO L276 IsEmpty]: Start isEmpty. Operand 53045 states and 69044 transitions. [2021-11-05 16:30:00,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-05 16:30:00,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:30:00,607 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] [2021-11-05 16:30:00,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 16:30:00,607 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:30:00,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:30:00,608 INFO L85 PathProgramCache]: Analyzing trace with hash -867384119, now seen corresponding path program 1 times [2021-11-05 16:30:00,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:30:00,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436831726] [2021-11-05 16:30:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:30:00,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:30:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:30:01,204 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-05 16:30:01,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:30:01,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436831726] [2021-11-05 16:30:01,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436831726] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:30:01,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681429200] [2021-11-05 16:30:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:30:01,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:30:01,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:30:01,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:30:01,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 16:30:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:30:02,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 5063 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:30:02,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:30:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-05 16:30:03,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:30:03,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681429200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:30:03,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:30:03,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 16:30:03,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972714377] [2021-11-05 16:30:03,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:30:03,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:30:03,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:30:03,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:30:03,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:30:03,508 INFO L87 Difference]: Start difference. First operand 53045 states and 69044 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:30:05,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:30:05,168 INFO L93 Difference]: Finished difference Result 147437 states and 192626 transitions. [2021-11-05 16:30:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:30:05,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 337 [2021-11-05 16:30:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:30:05,504 INFO L225 Difference]: With dead ends: 147437 [2021-11-05 16:30:05,504 INFO L226 Difference]: Without dead ends: 94487 [2021-11-05 16:30:05,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.69ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:30:05,564 INFO L933 BasicCegarLoop]: 5722 mSDtfsCounter, 2299 mSDsluCounter, 3421 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2299 SdHoareTripleChecker+Valid, 9143 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.71ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.84ms IncrementalHoareTripleChecker+Time [2021-11-05 16:30:05,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2299 Valid, 9143 Invalid, 14 Unknown, 0 Unchecked, 7.71ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 42.84ms Time] [2021-11-05 16:30:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94487 states. [2021-11-05 16:30:07,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94487 to 53073. [2021-11-05 16:30:07,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53073 states, 53072 states have (on average 1.3014772384684956) internal successors, (69072), 53072 states have internal predecessors, (69072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:30:07,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53073 states to 53073 states and 69072 transitions. [2021-11-05 16:30:07,353 INFO L78 Accepts]: Start accepts. Automaton has 53073 states and 69072 transitions. Word has length 337 [2021-11-05 16:30:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:30:07,354 INFO L470 AbstractCegarLoop]: Abstraction has 53073 states and 69072 transitions. [2021-11-05 16:30:07,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:30:07,354 INFO L276 IsEmpty]: Start isEmpty. Operand 53073 states and 69072 transitions. [2021-11-05 16:30:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-05 16:30:07,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:30:07,399 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] [2021-11-05 16:30:07,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 16:30:07,603 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,SelfDestructingSolverStorable9 [2021-11-05 16:30:07,604 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:30:07,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:30:07,604 INFO L85 PathProgramCache]: Analyzing trace with hash 55783307, now seen corresponding path program 1 times [2021-11-05 16:30:07,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:30:07,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598716001] [2021-11-05 16:30:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:30:07,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:30:07,764 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:30:07,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933998795] [2021-11-05 16:30:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:30:07,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:30:07,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:30:07,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:30:07,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 16:30:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:30:09,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 5062 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:30:09,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:30:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-05 16:30:09,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:30:09,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:30:09,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598716001] [2021-11-05 16:30:09,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:30:09,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933998795] [2021-11-05 16:30:09,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933998795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:30:09,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:30:09,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:30:09,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976782891] [2021-11-05 16:30:09,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:30:09,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:30:09,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:30:09,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:30:09,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:30:09,833 INFO L87 Difference]: Start difference. First operand 53073 states and 69072 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:30:12,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:30:12,434 INFO L93 Difference]: Finished difference Result 158021 states and 205772 transitions. [2021-11-05 16:30:12,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:30:12,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 337 [2021-11-05 16:30:12,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:30:12,651 INFO L225 Difference]: With dead ends: 158021 [2021-11-05 16:30:12,651 INFO L226 Difference]: Without dead ends: 105043 [2021-11-05 16:30:12,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:30:12,719 INFO L933 BasicCegarLoop]: 6427 mSDtfsCounter, 3227 mSDsluCounter, 3413 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 201.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3227 SdHoareTripleChecker+Valid, 9840 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.50ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 224.25ms IncrementalHoareTripleChecker+Time [2021-11-05 16:30:12,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3227 Valid, 9840 Invalid, 32 Unknown, 0 Unchecked, 9.50ms Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 224.25ms Time] [2021-11-05 16:30:12,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105043 states. [2021-11-05 16:30:14,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105043 to 53129. [2021-11-05 16:30:14,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53129 states, 53128 states have (on average 1.3011594639361541) internal successors, (69128), 53128 states have internal predecessors, (69128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:30:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53129 states to 53129 states and 69128 transitions. [2021-11-05 16:30:14,815 INFO L78 Accepts]: Start accepts. Automaton has 53129 states and 69128 transitions. Word has length 337 [2021-11-05 16:30:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:30:14,815 INFO L470 AbstractCegarLoop]: Abstraction has 53129 states and 69128 transitions. [2021-11-05 16:30:14,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:30:14,816 INFO L276 IsEmpty]: Start isEmpty. Operand 53129 states and 69128 transitions. [2021-11-05 16:30:14,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-05 16:30:14,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:30:14,861 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] [2021-11-05 16:30:14,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 16:30:15,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:30:15,070 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:30:15,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:30:15,071 INFO L85 PathProgramCache]: Analyzing trace with hash -733347065, now seen corresponding path program 1 times [2021-11-05 16:30:15,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:30:15,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234286081] [2021-11-05 16:30:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:30:15,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:30:15,381 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:30:15,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042356683] [2021-11-05 16:30:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:30:15,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:30:15,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:30:15,383 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:30:15,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 16:30:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:30:16,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 5075 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:30:16,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:30:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-05 16:30:18,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:30:18,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:30:18,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234286081] [2021-11-05 16:30:18,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:30:18,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042356683] [2021-11-05 16:30:18,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042356683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:30:18,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:30:18,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:30:18,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455814005] [2021-11-05 16:30:18,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:30:18,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:30:18,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:30:18,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:30:18,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:30:18,644 INFO L87 Difference]: Start difference. First operand 53129 states and 69128 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:30:21,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:30:21,391 INFO L93 Difference]: Finished difference Result 159113 states and 207004 transitions. [2021-11-05 16:30:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:30:21,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 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 339 [2021-11-05 16:30:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:30:21,628 INFO L225 Difference]: With dead ends: 159113 [2021-11-05 16:30:21,629 INFO L226 Difference]: Without dead ends: 106079 [2021-11-05 16:30:21,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:30:21,701 INFO L933 BasicCegarLoop]: 3424 mSDtfsCounter, 3103 mSDsluCounter, 3308 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3103 SdHoareTripleChecker+Valid, 6732 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.78ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.95ms IncrementalHoareTripleChecker+Time [2021-11-05 16:30:21,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3103 Valid, 6732 Invalid, 29 Unknown, 0 Unchecked, 8.78ms Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 67.95ms Time] [2021-11-05 16:30:21,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106079 states. [2021-11-05 16:30:24,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106079 to 93977. [2021-11-05 16:30:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93977 states, 93976 states have (on average 1.31000468204648) internal successors, (123109), 93976 states have internal predecessors, (123109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:30:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93977 states to 93977 states and 123109 transitions. [2021-11-05 16:30:24,799 INFO L78 Accepts]: Start accepts. Automaton has 93977 states and 123109 transitions. Word has length 339 [2021-11-05 16:30:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:30:24,800 INFO L470 AbstractCegarLoop]: Abstraction has 93977 states and 123109 transitions. [2021-11-05 16:30:24,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:30:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 93977 states and 123109 transitions. [2021-11-05 16:30:25,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-05 16:30:25,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:30:25,076 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] [2021-11-05 16:30:25,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 16:30:25,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:30:25,280 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:30:25,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:30:25,280 INFO L85 PathProgramCache]: Analyzing trace with hash 989257328, now seen corresponding path program 1 times [2021-11-05 16:30:25,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:30:25,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141570205] [2021-11-05 16:30:25,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:30:25,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:30:25,434 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:30:25,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548214369] [2021-11-05 16:30:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:30:25,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:30:25,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:30:25,436 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:30:25,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 16:30:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:30:26,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 5076 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:30:26,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:30:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-05 16:30:28,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:30:28,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:30:28,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141570205] [2021-11-05 16:30:28,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:30:28,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548214369] [2021-11-05 16:30:28,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548214369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:30:28,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:30:28,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:30:28,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952265177] [2021-11-05 16:30:28,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:30:28,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:30:28,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:30:28,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:30:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:30:28,628 INFO L87 Difference]: Start difference. First operand 93977 states and 123109 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)