./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.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 bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 19:47:09,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 19:47:09,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 19:47:09,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 19:47:09,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 19:47:09,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 19:47:09,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 19:47:09,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 19:47:09,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 19:47:09,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 19:47:09,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 19:47:09,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 19:47:09,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 19:47:09,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 19:47:09,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 19:47:09,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 19:47:09,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 19:47:09,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 19:47:09,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 19:47:09,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 19:47:09,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 19:47:09,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 19:47:09,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 19:47:09,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 19:47:09,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 19:47:09,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 19:47:09,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 19:47:09,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 19:47:09,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 19:47:09,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 19:47:09,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 19:47:09,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 19:47:09,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 19:47:09,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 19:47:09,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 19:47:09,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 19:47:09,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 19:47:09,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 19:47:09,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 19:47:09,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 19:47:09,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 19:47:09,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 19:47:09,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 19:47:09,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 19:47:09,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 19:47:09,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 19:47:09,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 19:47:09,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 19:47:09,155 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 19:47:09,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 19:47:09,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 19:47:09,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 19:47:09,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 19:47:09,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 19:47:09,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 19:47:09,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 19:47:09,157 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 19:47:09,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 19:47:09,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 19:47:09,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 19:47:09,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 19:47:09,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 19:47:09,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 19:47:09,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 19:47:09,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 19:47:09,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 19:47:09,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 19:47:09,158 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 19:47:09,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 19:47:09,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 19:47:09,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 19:47:09,160 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 [2021-11-02 19:47:09,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 19:47:09,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 19:47:09,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 19:47:09,371 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 19:47:09,372 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 19:47:09,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 19:47:09,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f557b305e/a4c2190825424cf7b480fde22be34eba/FLAG080796285 [2021-11-02 19:47:10,037 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 19:47:10,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 19:47:10,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f557b305e/a4c2190825424cf7b480fde22be34eba/FLAG080796285 [2021-11-02 19:47:10,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f557b305e/a4c2190825424cf7b480fde22be34eba [2021-11-02 19:47:10,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 19:47:10,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 19:47:10,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 19:47:10,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 19:47:10,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 19:47:10,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:47:10" (1/1) ... [2021-11-02 19:47:10,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c3f069c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:10, skipping insertion in model container [2021-11-02 19:47:10,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:47:10" (1/1) ... [2021-11-02 19:47:10,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 19:47:10,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 19:47:11,206 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-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-11-02 19:47:11,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 19:47:11,246 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 19:47:11,512 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-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-11-02 19:47:11,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 19:47:11,568 INFO L208 MainTranslator]: Completed translation [2021-11-02 19:47:11,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:11 WrapperNode [2021-11-02 19:47:11,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 19:47:11,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 19:47:11,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 19:47:11,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 19:47:11,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:11" (1/1) ... [2021-11-02 19:47:11,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:11" (1/1) ... [2021-11-02 19:47:12,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 19:47:12,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 19:47:12,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 19:47:12,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 19:47:12,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:11" (1/1) ... [2021-11-02 19:47:12,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:11" (1/1) ... [2021-11-02 19:47:12,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:11" (1/1) ... [2021-11-02 19:47:12,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:11" (1/1) ... [2021-11-02 19:47:13,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:11" (1/1) ... [2021-11-02 19:47:13,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:11" (1/1) ... [2021-11-02 19:47:13,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:11" (1/1) ... [2021-11-02 19:47:14,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 19:47:14,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 19:47:14,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 19:47:14,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 19:47:14,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:11" (1/1) ... [2021-11-02 19:47:14,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 19:47:14,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:47:14,165 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) [2021-11-02 19:47:14,230 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 [2021-11-02 19:47:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 19:47:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 19:47:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 19:47:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 19:47:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-02 19:47:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-02 19:47:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-02 19:47:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-02 19:47:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 19:47:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-02 19:47:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-02 19:47:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 19:47:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 19:47:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 19:47:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 19:47:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 19:47:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-02 19:47:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-02 19:47:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 19:47:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 19:47:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 19:47:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-02 19:47:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-02 19:47:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 19:47:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 19:47:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 19:47:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 19:47:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 19:47:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 19:47:42,750 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 19:47:42,750 INFO L299 CfgBuilder]: Removed 12639 assume(true) statements. [2021-11-02 19:47:42,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:47:42 BoogieIcfgContainer [2021-11-02 19:47:42,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 19:47:42,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 19:47:42,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 19:47:42,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 19:47:42,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:47:10" (1/3) ... [2021-11-02 19:47:42,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5192b41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:47:42, skipping insertion in model container [2021-11-02 19:47:42,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:47:11" (2/3) ... [2021-11-02 19:47:42,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5192b41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:47:42, skipping insertion in model container [2021-11-02 19:47:42,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:47:42" (3/3) ... [2021-11-02 19:47:42,764 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 19:47:42,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 19:47:42,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-02 19:47:42,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 19:47:42,821 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 [2021-11-02 19:47:42,821 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-02 19:47:42,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 9739 states, 9703 states have (on average 1.3758631351128516) internal successors, (13350), 9722 states have internal predecessors, (13350), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 19:47:42,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 19:47:42,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:47:42,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:47:42,951 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:47:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:47:42,955 INFO L85 PathProgramCache]: Analyzing trace with hash -178369046, now seen corresponding path program 1 times [2021-11-02 19:47:42,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:47:42,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655454870] [2021-11-02 19:47:42,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:47:42,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:47:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:47:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:47:43,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:47:43,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655454870] [2021-11-02 19:47:43,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655454870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:47:43,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:47:43,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 19:47:43,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221783448] [2021-11-02 19:47:43,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 19:47:43,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:47:43,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 19:47:43,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 19:47:43,488 INFO L87 Difference]: Start difference. First operand has 9739 states, 9703 states have (on average 1.3758631351128516) internal successors, (13350), 9722 states have internal predecessors, (13350), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:47:45,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:48:00,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:48:00,706 INFO L93 Difference]: Finished difference Result 19474 states and 26745 transitions. [2021-11-02 19:48:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 19:48:00,709 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-02 19:48:00,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:48:00,756 INFO L225 Difference]: With dead ends: 19474 [2021-11-02 19:48:00,756 INFO L226 Difference]: Without dead ends: 9729 [2021-11-02 19:48:00,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 19:48:00,792 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13199 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14441.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 13200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13199 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16759.37ms IncrementalHoareTripleChecker+Time [2021-11-02 19:48:00,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 13200 Unknown, 0 Unchecked, 17.43ms Time], IncrementalHoareTripleChecker [0 Valid, 13199 Invalid, 1 Unknown, 0 Unchecked, 16759.37ms Time] [2021-11-02 19:48:00,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2021-11-02 19:48:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 9729. [2021-11-02 19:48:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9729 states, 9694 states have (on average 1.3606354446049103) internal successors, (13190), 9712 states have internal predecessors, (13190), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 19:48:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9729 states to 9729 states and 13210 transitions. [2021-11-02 19:48:01,177 INFO L78 Accepts]: Start accepts. Automaton has 9729 states and 13210 transitions. Word has length 51 [2021-11-02 19:48:01,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:48:01,177 INFO L470 AbstractCegarLoop]: Abstraction has 9729 states and 13210 transitions. [2021-11-02 19:48:01,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:48:01,178 INFO L276 IsEmpty]: Start isEmpty. Operand 9729 states and 13210 transitions. [2021-11-02 19:48:01,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 19:48:01,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:48:01,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:48:01,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 19:48:01,183 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:48:01,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:48:01,186 INFO L85 PathProgramCache]: Analyzing trace with hash 2005484894, now seen corresponding path program 1 times [2021-11-02 19:48:01,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:48:01,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165792247] [2021-11-02 19:48:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:48:01,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:48:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:48:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:48:01,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:48:01,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165792247] [2021-11-02 19:48:01,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165792247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:48:01,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:48:01,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:48:01,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847946174] [2021-11-02 19:48:01,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:48:01,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:48:01,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:48:01,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:48:01,444 INFO L87 Difference]: Start difference. First operand 9729 states and 13210 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:48:03,505 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 [] [2021-11-02 19:48:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:48:29,290 INFO L93 Difference]: Finished difference Result 19433 states and 26397 transitions. [2021-11-02 19:48:29,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:48:29,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-02 19:48:29,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:48:29,328 INFO L225 Difference]: With dead ends: 19433 [2021-11-02 19:48:29,330 INFO L226 Difference]: Without dead ends: 9732 [2021-11-02 19:48:29,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:48:29,345 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 13194 mSDsCounter, 0 mSdLazyCounter, 26375 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24062.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 26380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.53ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26375 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27317.70ms IncrementalHoareTripleChecker+Time [2021-11-02 19:48:29,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 26380 Unknown, 0 Unchecked, 56.53ms Time], IncrementalHoareTripleChecker [4 Valid, 26375 Invalid, 1 Unknown, 0 Unchecked, 27317.70ms Time] [2021-11-02 19:48:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9732 states. [2021-11-02 19:48:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9732 to 9732. [2021-11-02 19:48:29,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9732 states, 9697 states have (on average 1.3605238733628957) internal successors, (13193), 9715 states have internal predecessors, (13193), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 19:48:29,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9732 states to 9732 states and 13213 transitions. [2021-11-02 19:48:29,544 INFO L78 Accepts]: Start accepts. Automaton has 9732 states and 13213 transitions. Word has length 51 [2021-11-02 19:48:29,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:48:29,550 INFO L470 AbstractCegarLoop]: Abstraction has 9732 states and 13213 transitions. [2021-11-02 19:48:29,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:48:29,550 INFO L276 IsEmpty]: Start isEmpty. Operand 9732 states and 13213 transitions. [2021-11-02 19:48:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 19:48:29,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:48:29,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:48:29,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 19:48:29,555 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:48:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:48:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash 550014451, now seen corresponding path program 1 times [2021-11-02 19:48:29,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:48:29,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64457315] [2021-11-02 19:48:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:48:29,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:48:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:48:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 19:48:29,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:48:29,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64457315] [2021-11-02 19:48:29,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64457315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:48:29,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:48:29,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:48:29,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434700582] [2021-11-02 19:48:29,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:48:29,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:48:29,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:48:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:48:29,759 INFO L87 Difference]: Start difference. First operand 9732 states and 13213 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:48:31,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:48:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:48:59,383 INFO L93 Difference]: Finished difference Result 19430 states and 26391 transitions. [2021-11-02 19:48:59,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:48:59,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-02 19:48:59,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:48:59,415 INFO L225 Difference]: With dead ends: 19430 [2021-11-02 19:48:59,416 INFO L226 Difference]: Without dead ends: 9734 [2021-11-02 19:48:59,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:48:59,430 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 13194 mSDsCounter, 0 mSdLazyCounter, 26376 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25293.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 26379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.12ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29168.72ms IncrementalHoareTripleChecker+Time [2021-11-02 19:48:59,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 26379 Unknown, 0 Unchecked, 49.12ms Time], IncrementalHoareTripleChecker [2 Valid, 26376 Invalid, 1 Unknown, 0 Unchecked, 29168.72ms Time] [2021-11-02 19:48:59,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9734 states. [2021-11-02 19:48:59,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9734 to 9734. [2021-11-02 19:48:59,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9734 states, 9699 states have (on average 1.3604495308794722) internal successors, (13195), 9717 states have internal predecessors, (13195), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 19:48:59,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9734 states to 9734 states and 13215 transitions. [2021-11-02 19:48:59,600 INFO L78 Accepts]: Start accepts. Automaton has 9734 states and 13215 transitions. Word has length 54 [2021-11-02 19:48:59,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:48:59,600 INFO L470 AbstractCegarLoop]: Abstraction has 9734 states and 13215 transitions. [2021-11-02 19:48:59,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:48:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 9734 states and 13215 transitions. [2021-11-02 19:48:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 19:48:59,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:48:59,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:48:59,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 19:48:59,602 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:48:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:48:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1892672297, now seen corresponding path program 1 times [2021-11-02 19:48:59,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:48:59,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054900920] [2021-11-02 19:48:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:48:59,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:48:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:48:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 19:48:59,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:48:59,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054900920] [2021-11-02 19:48:59,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054900920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:48:59,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:48:59,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:48:59,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678220864] [2021-11-02 19:48:59,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:48:59,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:48:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:48:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:48:59,765 INFO L87 Difference]: Start difference. First operand 9734 states and 13215 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:49:01,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:49:41,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:49:41,856 INFO L93 Difference]: Finished difference Result 28986 states and 39410 transitions. [2021-11-02 19:49:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:49:41,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-02 19:49:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:49:41,932 INFO L225 Difference]: With dead ends: 28986 [2021-11-02 19:49:41,932 INFO L226 Difference]: Without dead ends: 19299 [2021-11-02 19:49:41,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:49:41,953 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 13113 mSDsluCounter, 13110 mSDsCounter, 0 mSdLazyCounter, 26287 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35458.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13113 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.38ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26287 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41333.86ms IncrementalHoareTripleChecker+Time [2021-11-02 19:49:41,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13113 Valid, 50 Invalid, 26291 Unknown, 0 Unchecked, 47.38ms Time], IncrementalHoareTripleChecker [3 Valid, 26287 Invalid, 1 Unknown, 0 Unchecked, 41333.86ms Time] [2021-11-02 19:49:41,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19299 states. [2021-11-02 19:49:42,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19299 to 19299. [2021-11-02 19:49:42,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19299 states, 19248 states have (on average 1.3613881961762262) internal successors, (26204), 19266 states have internal predecessors, (26204), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 19:49:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19299 states to 19299 states and 26244 transitions. [2021-11-02 19:49:42,287 INFO L78 Accepts]: Start accepts. Automaton has 19299 states and 26244 transitions. Word has length 56 [2021-11-02 19:49:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:49:42,287 INFO L470 AbstractCegarLoop]: Abstraction has 19299 states and 26244 transitions. [2021-11-02 19:49:42,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:49:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 19299 states and 26244 transitions. [2021-11-02 19:49:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 19:49:42,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:49:42,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:49:42,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 19:49:42,290 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:49:42,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:49:42,297 INFO L85 PathProgramCache]: Analyzing trace with hash 903088865, now seen corresponding path program 1 times [2021-11-02 19:49:42,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:49:42,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952088004] [2021-11-02 19:49:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:49:42,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:49:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:49:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 19:49:42,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:49:42,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952088004] [2021-11-02 19:49:42,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952088004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:49:42,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:49:42,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 19:49:42,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077884257] [2021-11-02 19:49:42,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:49:42,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:49:42,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:49:42,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:49:42,512 INFO L87 Difference]: Start difference. First operand 19299 states and 26244 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:49:44,566 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 [] [2021-11-02 19:50:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:50:37,682 INFO L93 Difference]: Finished difference Result 38508 states and 52392 transitions. [2021-11-02 19:50:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:50:37,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-02 19:50:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:50:37,760 INFO L225 Difference]: With dead ends: 38508 [2021-11-02 19:50:37,760 INFO L226 Difference]: Without dead ends: 38476 [2021-11-02 19:50:37,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:50:37,776 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 13126 mSDsluCounter, 13099 mSDsCounter, 0 mSdLazyCounter, 26264 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45461.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13126 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.79ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 26264 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54091.00ms IncrementalHoareTripleChecker+Time [2021-11-02 19:50:37,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13126 Valid, 50 Invalid, 26280 Unknown, 0 Unchecked, 47.79ms Time], IncrementalHoareTripleChecker [15 Valid, 26264 Invalid, 1 Unknown, 0 Unchecked, 54091.00ms Time] [2021-11-02 19:50:37,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38476 states. [2021-11-02 19:50:38,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38476 to 38472. [2021-11-02 19:50:38,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38472 states, 38391 states have (on average 1.361673308848428) internal successors, (52276), 38407 states have internal predecessors, (52276), 40 states have call successors, (40), 24 states have call predecessors, (40), 24 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-02 19:50:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38472 states to 38472 states and 52356 transitions. [2021-11-02 19:50:38,510 INFO L78 Accepts]: Start accepts. Automaton has 38472 states and 52356 transitions. Word has length 59 [2021-11-02 19:50:38,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:50:38,511 INFO L470 AbstractCegarLoop]: Abstraction has 38472 states and 52356 transitions. [2021-11-02 19:50:38,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:50:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 38472 states and 52356 transitions. [2021-11-02 19:50:38,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 19:50:38,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:50:38,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:50:38,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 19:50:38,512 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:50:38,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:50:38,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2068984275, now seen corresponding path program 1 times [2021-11-02 19:50:38,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:50:38,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443320186] [2021-11-02 19:50:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:50:38,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:50:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:50:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 19:50:38,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:50:38,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443320186] [2021-11-02 19:50:38,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443320186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:50:38,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:50:38,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 19:50:38,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175460196] [2021-11-02 19:50:38,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:50:38,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:50:38,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:50:38,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:50:38,653 INFO L87 Difference]: Start difference. First operand 38472 states and 52356 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:50:40,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:51:47,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:51:47,333 INFO L93 Difference]: Finished difference Result 115288 states and 156934 transitions. [2021-11-02 19:51:47,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:51:47,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-02 19:51:47,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:51:47,559 INFO L225 Difference]: With dead ends: 115288 [2021-11-02 19:51:47,559 INFO L226 Difference]: Without dead ends: 76863 [2021-11-02 19:51:47,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:51:47,614 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 13129 mSDsluCounter, 13114 mSDsCounter, 0 mSdLazyCounter, 26280 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54459.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13129 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.69ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26280 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66643.80ms IncrementalHoareTripleChecker+Time [2021-11-02 19:51:47,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13129 Valid, 50 Invalid, 26290 Unknown, 0 Unchecked, 57.69ms Time], IncrementalHoareTripleChecker [9 Valid, 26280 Invalid, 1 Unknown, 0 Unchecked, 66643.80ms Time] [2021-11-02 19:51:47,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76863 states. [2021-11-02 19:51:48,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76863 to 76843. [2021-11-02 19:51:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76843 states, 76698 states have (on average 1.3618868810138465) internal successors, (104454), 76714 states have internal predecessors, (104454), 80 states have call successors, (80), 48 states have call predecessors, (80), 48 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-02 19:51:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76843 states to 76843 states and 104614 transitions. [2021-11-02 19:51:49,284 INFO L78 Accepts]: Start accepts. Automaton has 76843 states and 104614 transitions. Word has length 60 [2021-11-02 19:51:49,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:51:49,286 INFO L470 AbstractCegarLoop]: Abstraction has 76843 states and 104614 transitions. [2021-11-02 19:51:49,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:51:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 76843 states and 104614 transitions. [2021-11-02 19:51:49,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 19:51:49,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:51:49,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:51:49,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 19:51:49,288 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:51:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:51:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1667255631, now seen corresponding path program 1 times [2021-11-02 19:51:49,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:51:49,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740227245] [2021-11-02 19:51:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:51:49,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:51:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:51:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 19:51:49,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:51:49,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740227245] [2021-11-02 19:51:49,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740227245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:51:49,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:51:49,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 19:51:49,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762530572] [2021-11-02 19:51:49,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:51:49,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:51:49,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:51:49,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:51:49,462 INFO L87 Difference]: Start difference. First operand 76843 states and 104614 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:51:51,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:53:09,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:53:09,575 INFO L93 Difference]: Finished difference Result 230418 states and 313725 transitions. [2021-11-02 19:53:09,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:53:09,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-02 19:53:09,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:53:10,171 INFO L225 Difference]: With dead ends: 230418 [2021-11-02 19:53:10,171 INFO L226 Difference]: Without dead ends: 153620 [2021-11-02 19:53:10,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:53:10,273 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 13122 mSDsluCounter, 13133 mSDsCounter, 0 mSdLazyCounter, 26297 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61581.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13122 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.68ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26297 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76961.94ms IncrementalHoareTripleChecker+Time [2021-11-02 19:53:10,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13122 Valid, 50 Invalid, 26305 Unknown, 0 Unchecked, 60.68ms Time], IncrementalHoareTripleChecker [7 Valid, 26297 Invalid, 1 Unknown, 0 Unchecked, 76961.94ms Time] [2021-11-02 19:53:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153620 states. [2021-11-02 19:53:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153620 to 153583. [2021-11-02 19:53:12,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153583 states, 153310 states have (on average 1.3619920422673015) internal successors, (208807), 153326 states have internal predecessors, (208807), 160 states have call successors, (160), 96 states have call predecessors, (160), 96 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-02 19:53:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153583 states to 153583 states and 209127 transitions. [2021-11-02 19:53:13,565 INFO L78 Accepts]: Start accepts. Automaton has 153583 states and 209127 transitions. Word has length 69 [2021-11-02 19:53:13,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:53:13,566 INFO L470 AbstractCegarLoop]: Abstraction has 153583 states and 209127 transitions. [2021-11-02 19:53:13,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:53:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 153583 states and 209127 transitions. [2021-11-02 19:53:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 19:53:13,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:53:13,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:53:13,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 19:53:13,570 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:53:13,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:53:13,571 INFO L85 PathProgramCache]: Analyzing trace with hash -141913287, now seen corresponding path program 1 times [2021-11-02 19:53:13,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:53:13,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314594452] [2021-11-02 19:53:13,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:53:13,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:53:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:53:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 19:53:13,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:53:13,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314594452] [2021-11-02 19:53:13,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314594452] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 19:53:13,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015518109] [2021-11-02 19:53:13,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:53:13,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 19:53:13,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:53:13,796 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) [2021-11-02 19:53:13,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 19:53:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:53:14,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 2118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 19:53:14,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 19:53:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 19:53:15,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 19:53:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 19:53:15,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015518109] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 19:53:15,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 19:53:15,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 19:53:15,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293114602] [2021-11-02 19:53:15,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 19:53:15,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:53:15,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 19:53:15,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 19:53:15,444 INFO L87 Difference]: Start difference. First operand 153583 states and 209127 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:53:17,498 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 [] [2021-11-02 19:56:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:56:23,189 INFO L93 Difference]: Finished difference Result 307148 states and 418246 transitions. [2021-11-02 19:56:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 19:56:23,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 71 [2021-11-02 19:56:23,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:56:23,693 INFO L225 Difference]: With dead ends: 307148 [2021-11-02 19:56:23,693 INFO L226 Difference]: Without dead ends: 153594 [2021-11-02 19:56:23,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 199.27ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 19:56:23,861 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 52728 mSDsCounter, 0 mSdLazyCounter, 65872 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141120.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 65900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 202.96ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 65872 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184214.19ms IncrementalHoareTripleChecker+Time [2021-11-02 19:56:23,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 65900 Unknown, 0 Unchecked, 202.96ms Time], IncrementalHoareTripleChecker [27 Valid, 65872 Invalid, 1 Unknown, 0 Unchecked, 184214.19ms Time] [2021-11-02 19:56:24,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153594 states. [2021-11-02 19:56:26,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153594 to 153594. [2021-11-02 19:56:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153594 states, 153321 states have (on average 1.3619660711839865) internal successors, (208818), 153337 states have internal predecessors, (208818), 160 states have call successors, (160), 96 states have call predecessors, (160), 96 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-02 19:56:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153594 states to 153594 states and 209138 transitions. [2021-11-02 19:56:27,109 INFO L78 Accepts]: Start accepts. Automaton has 153594 states and 209138 transitions. Word has length 71 [2021-11-02 19:56:27,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:56:27,111 INFO L470 AbstractCegarLoop]: Abstraction has 153594 states and 209138 transitions. [2021-11-02 19:56:27,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:56:27,112 INFO L276 IsEmpty]: Start isEmpty. Operand 153594 states and 209138 transitions. [2021-11-02 19:56:27,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 19:56:27,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:56:27,120 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-02 19:56:27,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 19:56:27,335 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 [2021-11-02 19:56:27,335 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:56:27,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:56:27,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1902977070, now seen corresponding path program 2 times [2021-11-02 19:56:27,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:56:27,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258483092] [2021-11-02 19:56:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:56:27,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:56:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:56:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-02 19:56:27,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:56:27,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258483092] [2021-11-02 19:56:27,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258483092] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 19:56:27,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385596049] [2021-11-02 19:56:27,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 19:56:27,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 19:56:27,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:56:27,568 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) [2021-11-02 19:56:27,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 19:58:10,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 19:58:10,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 19:58:10,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2088 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-02 19:58:10,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 19:58:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-02 19:58:10,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 19:58:10,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385596049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:58:10,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 19:58:10,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-11-02 19:58:10,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646855022] [2021-11-02 19:58:10,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 19:58:10,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:58:10,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 19:58:10,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-02 19:58:10,523 INFO L87 Difference]: Start difference. First operand 153594 states and 209138 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:58:12,583 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 [] Killed by 15