./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 5b36d44f 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-5b36d44 [2021-11-07 13:56:23,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:56:23,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:56:23,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:56:23,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:56:23,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:56:23,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:56:23,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:56:23,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:56:23,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:56:23,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:56:23,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:56:23,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:56:23,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:56:23,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:56:23,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:56:23,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:56:23,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:56:23,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:56:23,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:56:23,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:56:23,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:56:23,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:56:23,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:56:23,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:56:23,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:56:23,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:56:23,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:56:23,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:56:23,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:56:23,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:56:23,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:56:23,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:56:23,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:56:23,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:56:23,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:56:23,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:56:23,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:56:23,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:56:23,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:56:23,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:56:23,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:56:23,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:56:23,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:56:23,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:56:23,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:56:23,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:56:23,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:56:23,665 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:56:23,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:56:23,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:56:23,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:56:23,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:56:23,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:56:23,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:56:23,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:56:23,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:56:23,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:56:23,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:56:23,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:56:23,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:56:23,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:56:23,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:56:23,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:56:23,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:56:23,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:56:23,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:56:23,669 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:56:23,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:56:23,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:56:23,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:56:23,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 [2021-11-07 13:56:23,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:56:23,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:56:23,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:56:23,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:56:23,847 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:56:23,847 INFO L432 ainManager$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 [2021-11-07 13:56:23,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3666ca663/115ffec86fff475298a1efd9e97449b3/FLAG1a124da03 [2021-11-07 13:56:24,381 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:56:24,382 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 [2021-11-07 13:56:24,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3666ca663/115ffec86fff475298a1efd9e97449b3/FLAG1a124da03 [2021-11-07 13:56:24,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3666ca663/115ffec86fff475298a1efd9e97449b3 [2021-11-07 13:56:24,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:56:24,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:56:24,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:56:24,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:56:24,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:56:24,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:24" (1/1) ... [2021-11-07 13:56:24,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a08c3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:24, skipping insertion in model container [2021-11-07 13:56:24,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:24" (1/1) ... [2021-11-07 13:56:24,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:56:24,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:56:25,315 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] [2021-11-07 13:56:25,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:56:25,353 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:56:25,511 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] [2021-11-07 13:56:25,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:56:25,603 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:56:25,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:25 WrapperNode [2021-11-07 13:56:25,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:56:25,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:56:25,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:56:25,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:56:25,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:25" (1/1) ... [2021-11-07 13:56:25,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:25" (1/1) ... [2021-11-07 13:56:26,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:56:26,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:56:26,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:56:26,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:56:26,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:25" (1/1) ... [2021-11-07 13:56:26,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:25" (1/1) ... [2021-11-07 13:56:26,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:25" (1/1) ... [2021-11-07 13:56:26,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:25" (1/1) ... [2021-11-07 13:56:27,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:25" (1/1) ... [2021-11-07 13:56:27,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:25" (1/1) ... [2021-11-07 13:56:27,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:25" (1/1) ... [2021-11-07 13:56:28,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:56:28,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:56:28,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:56:28,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:56:28,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:25" (1/1) ... [2021-11-07 13:56:28,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:56:28,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:56:28,245 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) [2021-11-07 13:56:28,307 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 [2021-11-07 13:56:28,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:56:28,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:56:28,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:56:28,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:56:28,343 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-07 13:56:28,343 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-07 13:56:28,343 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-07 13:56:28,343 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-07 13:56:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:56:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-07 13:56:28,344 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-07 13:56:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:56:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-07 13:56:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:56:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:56:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 13:56:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-07 13:56:28,345 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-07 13:56:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:56:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:56:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:56:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-07 13:56:28,345 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-07 13:56:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 13:56:28,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 13:56:28,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:56:28,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:56:28,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:56:28,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:57:11,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:57:11,425 INFO L299 CfgBuilder]: Removed 12639 assume(true) statements. [2021-11-07 13:57:11,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:11 BoogieIcfgContainer [2021-11-07 13:57:11,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:57:11,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:57:11,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:57:11,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:57:11,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:24" (1/3) ... [2021-11-07 13:57:11,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282ad389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:11, skipping insertion in model container [2021-11-07 13:57:11,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:25" (2/3) ... [2021-11-07 13:57:11,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282ad389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:11, skipping insertion in model container [2021-11-07 13:57:11,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:11" (3/3) ... [2021-11-07 13:57:11,441 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 [2021-11-07 13:57:11,445 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:57:11,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-07 13:57:11,521 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:57:11,528 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 [2021-11-07 13:57:11,528 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-07 13:57:11,639 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) [2021-11-07 13:57:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 13:57:11,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:57:11,646 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] [2021-11-07 13:57:11,647 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)] === [2021-11-07 13:57:11,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:57:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash -178369046, now seen corresponding path program 1 times [2021-11-07 13:57:11,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:57:11,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999470507] [2021-11-07 13:57:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:57:11,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:57:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:57:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:57:12,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:57:12,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999470507] [2021-11-07 13:57:12,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999470507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:57:12,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:57:12,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:57:12,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765357759] [2021-11-07 13:57:12,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:57:12,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 13:57:12,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:57:12,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 13:57:12,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 13:57:12,117 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) [2021-11-07 13:57:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:57:12,372 INFO L93 Difference]: Finished difference Result 19474 states and 26745 transitions. [2021-11-07 13:57:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 13:57:12,374 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 [2021-11-07 13:57:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:57:12,420 INFO L225 Difference]: With dead ends: 19474 [2021-11-07 13:57:12,420 INFO L226 Difference]: Without dead ends: 9729 [2021-11-07 13:57:12,452 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 [2021-11-07 13:57:12,455 INFO L933 BasicCegarLoop]: 13226 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13226 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.15ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 13:57:12,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13226 Invalid, 0 Unknown, 0 Unchecked, 27.15ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 13:57:12,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2021-11-07 13:57:12,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 9729. [2021-11-07 13:57:12,685 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) [2021-11-07 13:57:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9729 states to 9729 states and 13210 transitions. [2021-11-07 13:57:12,725 INFO L78 Accepts]: Start accepts. Automaton has 9729 states and 13210 transitions. Word has length 51 [2021-11-07 13:57:12,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:57:12,726 INFO L470 AbstractCegarLoop]: Abstraction has 9729 states and 13210 transitions. [2021-11-07 13:57:12,726 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) [2021-11-07 13:57:12,727 INFO L276 IsEmpty]: Start isEmpty. Operand 9729 states and 13210 transitions. [2021-11-07 13:57:12,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 13:57:12,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:57:12,730 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] [2021-11-07 13:57:12,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:57:12,731 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)] === [2021-11-07 13:57:12,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:57:12,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2005484894, now seen corresponding path program 1 times [2021-11-07 13:57:12,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:57:12,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132863020] [2021-11-07 13:57:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:57:12,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:57:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:57:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:57:12,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:57:12,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132863020] [2021-11-07 13:57:12,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132863020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:57:12,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:57:12,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:57:12,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943560717] [2021-11-07 13:57:12,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:57:12,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:57:12,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:57:12,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:57:12,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:57:12,977 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) [2021-11-07 13:57:15,024 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 [] [2021-11-07 13:57:15,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:57:15,498 INFO L93 Difference]: Finished difference Result 28981 states and 39405 transitions. [2021-11-07 13:57:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:57:15,499 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 [2021-11-07 13:57:15,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:57:15,569 INFO L225 Difference]: With dead ends: 28981 [2021-11-07 13:57:15,569 INFO L226 Difference]: Without dead ends: 19294 [2021-11-07 13:57:15,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:57:15,594 INFO L933 BasicCegarLoop]: 13217 mSDtfsCounter, 13113 mSDsluCounter, 13110 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2056.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13113 SdHoareTripleChecker+Valid, 26327 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.97ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2165.26ms IncrementalHoareTripleChecker+Time [2021-11-07 13:57:15,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13113 Valid, 26327 Invalid, 15 Unknown, 0 Unchecked, 38.97ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2165.26ms Time] [2021-11-07 13:57:15,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19294 states. [2021-11-07 13:57:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19294 to 19294. [2021-11-07 13:57:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19294 states, 19243 states have (on average 1.3614820973860624) internal successors, (26199), 19261 states have internal predecessors, (26199), 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) [2021-11-07 13:57:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19294 states to 19294 states and 26239 transitions. [2021-11-07 13:57:15,957 INFO L78 Accepts]: Start accepts. Automaton has 19294 states and 26239 transitions. Word has length 51 [2021-11-07 13:57:15,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:57:15,958 INFO L470 AbstractCegarLoop]: Abstraction has 19294 states and 26239 transitions. [2021-11-07 13:57:15,958 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) [2021-11-07 13:57:15,958 INFO L276 IsEmpty]: Start isEmpty. Operand 19294 states and 26239 transitions. [2021-11-07 13:57:15,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 13:57:15,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:57:15,960 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] [2021-11-07 13:57:15,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:57:15,960 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 13:57:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:57:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash -716750598, now seen corresponding path program 1 times [2021-11-07 13:57:15,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:57:15,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651609699] [2021-11-07 13:57:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:57:15,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:57:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:57:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:57:16,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:57:16,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651609699] [2021-11-07 13:57:16,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651609699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:57:16,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:57:16,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:57:16,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290492129] [2021-11-07 13:57:16,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:57:16,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:57:16,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:57:16,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:57:16,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:57:16,149 INFO L87 Difference]: Start difference. First operand 19294 states and 26239 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 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) [2021-11-07 13:57:16,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:57:16,610 INFO L93 Difference]: Finished difference Result 38503 states and 52387 transitions. [2021-11-07 13:57:16,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:57:16,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 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 [2021-11-07 13:57:16,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:57:16,745 INFO L225 Difference]: With dead ends: 38503 [2021-11-07 13:57:16,745 INFO L226 Difference]: Without dead ends: 38471 [2021-11-07 13:57:17,002 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 [2021-11-07 13:57:17,003 INFO L933 BasicCegarLoop]: 13199 mSDtfsCounter, 13131 mSDsluCounter, 13099 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13131 SdHoareTripleChecker+Valid, 26298 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.24ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.66ms IncrementalHoareTripleChecker+Time [2021-11-07 13:57:17,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13131 Valid, 26298 Invalid, 32 Unknown, 0 Unchecked, 38.24ms Time], IncrementalHoareTripleChecker [15 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 40.66ms Time] [2021-11-07 13:57:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38471 states. [2021-11-07 13:57:17,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38471 to 38467. [2021-11-07 13:57:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38467 states, 38386 states have (on average 1.361720418902725) internal successors, (52271), 38402 states have internal predecessors, (52271), 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) [2021-11-07 13:57:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38467 states to 38467 states and 52351 transitions. [2021-11-07 13:57:17,914 INFO L78 Accepts]: Start accepts. Automaton has 38467 states and 52351 transitions. Word has length 54 [2021-11-07 13:57:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:57:17,916 INFO L470 AbstractCegarLoop]: Abstraction has 38467 states and 52351 transitions. [2021-11-07 13:57:17,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 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) [2021-11-07 13:57:17,916 INFO L276 IsEmpty]: Start isEmpty. Operand 38467 states and 52351 transitions. [2021-11-07 13:57:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 13:57:17,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:57:17,920 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] [2021-11-07 13:57:17,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:57:17,920 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 13:57:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:57:17,921 INFO L85 PathProgramCache]: Analyzing trace with hash -744400076, now seen corresponding path program 1 times [2021-11-07 13:57:17,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:57:17,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061108091] [2021-11-07 13:57:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:57:17,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:57:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:57:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:57:18,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:57:18,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061108091] [2021-11-07 13:57:18,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061108091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:57:18,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:57:18,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:57:18,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898638929] [2021-11-07 13:57:18,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:57:18,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:57:18,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:57:18,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:57:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:57:18,083 INFO L87 Difference]: Start difference. First operand 38467 states and 52351 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:57:19,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:57:19,104 INFO L93 Difference]: Finished difference Result 115283 states and 156929 transitions. [2021-11-07 13:57:19,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:57:19,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-07 13:57:19,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:57:19,316 INFO L225 Difference]: With dead ends: 115283 [2021-11-07 13:57:19,317 INFO L226 Difference]: Without dead ends: 76858 [2021-11-07 13:57:19,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:57:19,398 INFO L933 BasicCegarLoop]: 13203 mSDtfsCounter, 13134 mSDsluCounter, 13114 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13134 SdHoareTripleChecker+Valid, 26317 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.07ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.48ms IncrementalHoareTripleChecker+Time [2021-11-07 13:57:19,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13134 Valid, 26317 Invalid, 23 Unknown, 0 Unchecked, 28.07ms Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 20.48ms Time] [2021-11-07 13:57:19,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76858 states. [2021-11-07 13:57:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76858 to 76838. [2021-11-07 13:57:20,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76838 states, 76693 states have (on average 1.3619104742284172) internal successors, (104449), 76709 states have internal predecessors, (104449), 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) [2021-11-07 13:57:21,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76838 states to 76838 states and 104609 transitions. [2021-11-07 13:57:21,088 INFO L78 Accepts]: Start accepts. Automaton has 76838 states and 104609 transitions. Word has length 55 [2021-11-07 13:57:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:57:21,089 INFO L470 AbstractCegarLoop]: Abstraction has 76838 states and 104609 transitions. [2021-11-07 13:57:21,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:57:21,089 INFO L276 IsEmpty]: Start isEmpty. Operand 76838 states and 104609 transitions. [2021-11-07 13:57:21,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 13:57:21,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:57:21,091 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] [2021-11-07 13:57:21,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:57:21,092 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 13:57:21,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:57:21,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1461549096, now seen corresponding path program 1 times [2021-11-07 13:57:21,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:57:21,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207335340] [2021-11-07 13:57:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:57:21,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:57:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:57:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:57:21,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:57:21,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207335340] [2021-11-07 13:57:21,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207335340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:57:21,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:57:21,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:57:21,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539215003] [2021-11-07 13:57:21,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:57:21,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:57:21,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:57:21,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:57:21,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:57:21,268 INFO L87 Difference]: Start difference. First operand 76838 states and 104609 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:57:23,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:57:23,417 INFO L93 Difference]: Finished difference Result 230413 states and 313720 transitions. [2021-11-07 13:57:23,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:57:23,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-07 13:57:23,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:57:23,861 INFO L225 Difference]: With dead ends: 230413 [2021-11-07 13:57:23,862 INFO L226 Difference]: Without dead ends: 153615 [2021-11-07 13:57:23,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:57:23,972 INFO L933 BasicCegarLoop]: 13204 mSDtfsCounter, 13127 mSDsluCounter, 13133 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13127 SdHoareTripleChecker+Valid, 26337 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.50ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.43ms IncrementalHoareTripleChecker+Time [2021-11-07 13:57:23,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13127 Valid, 26337 Invalid, 18 Unknown, 0 Unchecked, 20.50ms Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 31.43ms Time] [2021-11-07 13:57:24,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153615 states. [2021-11-07 13:57:26,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153615 to 153578. [2021-11-07 13:57:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153578 states, 153305 states have (on average 1.3620038485372297) internal successors, (208802), 153321 states have internal predecessors, (208802), 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) [2021-11-07 13:57:27,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153578 states to 153578 states and 209122 transitions. [2021-11-07 13:57:27,335 INFO L78 Accepts]: Start accepts. Automaton has 153578 states and 209122 transitions. Word has length 64 [2021-11-07 13:57:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:57:27,335 INFO L470 AbstractCegarLoop]: Abstraction has 153578 states and 209122 transitions. [2021-11-07 13:57:27,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:57:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 153578 states and 209122 transitions. [2021-11-07 13:57:27,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 13:57:27,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:57:27,339 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] [2021-11-07 13:57:27,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:57:27,339 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 13:57:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:57:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash -257397806, now seen corresponding path program 1 times [2021-11-07 13:57:27,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:57:27,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113339813] [2021-11-07 13:57:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:57:27,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:57:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:57:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:57:27,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:57:27,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113339813] [2021-11-07 13:57:27,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113339813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:57:27,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:57:27,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:57:27,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181809426] [2021-11-07 13:57:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:57:27,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:57:27,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:57:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:57:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:57:27,612 INFO L87 Difference]: Start difference. First operand 153578 states and 209122 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:57:30,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:57:30,500 INFO L93 Difference]: Finished difference Result 307131 states and 418221 transitions. [2021-11-07 13:57:30,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:57:30,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-07 13:57:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:57:30,899 INFO L225 Difference]: With dead ends: 307131 [2021-11-07 13:57:30,899 INFO L226 Difference]: Without dead ends: 153581 [2021-11-07 13:57:31,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:57:31,071 INFO L933 BasicCegarLoop]: 13195 mSDtfsCounter, 0 mSDsluCounter, 13183 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26378 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.77ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.81ms IncrementalHoareTripleChecker+Time [2021-11-07 13:57:31,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26378 Invalid, 19 Unknown, 0 Unchecked, 16.77ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 24.81ms Time] [2021-11-07 13:57:31,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153581 states. [2021-11-07 13:57:33,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153581 to 153581. [2021-11-07 13:57:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153581 states, 153308 states have (on average 1.3619967646828606) internal successors, (208805), 153324 states have internal predecessors, (208805), 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) [2021-11-07 13:57:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153581 states to 153581 states and 209125 transitions. [2021-11-07 13:57:34,196 INFO L78 Accepts]: Start accepts. Automaton has 153581 states and 209125 transitions. Word has length 66 [2021-11-07 13:57:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:57:34,196 INFO L470 AbstractCegarLoop]: Abstraction has 153581 states and 209125 transitions. [2021-11-07 13:57:34,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:57:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 153581 states and 209125 transitions. [2021-11-07 13:57:34,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 13:57:34,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:57:34,198 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] [2021-11-07 13:57:34,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:57:34,198 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 13:57:34,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:57:34,199 INFO L85 PathProgramCache]: Analyzing trace with hash 299255453, now seen corresponding path program 1 times [2021-11-07 13:57:34,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:57:34,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275862220] [2021-11-07 13:57:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:57:34,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:57:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:57:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 13:57:34,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:57:34,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275862220] [2021-11-07 13:57:34,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275862220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:57:34,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438014974] [2021-11-07 13:57:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:57:34,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:57:34,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:57:34,489 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) [2021-11-07 13:57:34,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process