./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--gpu--drm--ast--ast.ko-entry_point.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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5280d555a6b852b15aa6f2a52d5ff0e2fc9cc40b4793f53953ed35d69afcf0b0 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 20:06:39,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 20:06:39,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 20:06:39,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 20:06:39,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 20:06:39,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 20:06:39,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 20:06:39,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 20:06:39,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 20:06:39,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 20:06:39,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 20:06:39,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 20:06:39,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 20:06:39,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 20:06:39,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 20:06:39,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 20:06:39,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 20:06:39,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 20:06:39,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 20:06:39,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 20:06:39,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 20:06:39,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 20:06:39,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 20:06:39,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 20:06:39,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 20:06:39,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 20:06:39,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 20:06:39,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 20:06:39,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 20:06:39,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 20:06:39,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 20:06:39,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 20:06:39,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 20:06:39,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 20:06:39,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 20:06:39,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 20:06:39,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 20:06:39,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 20:06:39,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 20:06:39,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 20:06:39,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 20:06:39,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 20:06:39,566 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 20:06:39,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 20:06:39,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 20:06:39,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 20:06:39,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 20:06:39,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 20:06:39,568 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 20:06:39,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 20:06:39,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 20:06:39,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 20:06:39,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 20:06:39,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 20:06:39,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 20:06:39,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 20:06:39,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 20:06:39,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 20:06:39,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 20:06:39,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 20:06:39,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 20:06:39,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:06:39,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 20:06:39,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 20:06:39,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 20:06:39,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 20:06:39,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 20:06:39,573 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 20:06:39,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 20:06:39,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 20:06:39,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 20:06:39,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5280d555a6b852b15aa6f2a52d5ff0e2fc9cc40b4793f53953ed35d69afcf0b0 [2021-11-02 20:06:39,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 20:06:39,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 20:06:39,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 20:06:39,845 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 20:06:39,846 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 20:06:39,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2021-11-02 20:06:39,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fe9735a/886b0a6e9a1a49f3af6ab1e0be9e2628/FLAG632a7b35d [2021-11-02 20:06:40,707 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 20:06:40,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2021-11-02 20:06:40,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fe9735a/886b0a6e9a1a49f3af6ab1e0be9e2628/FLAG632a7b35d [2021-11-02 20:06:41,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fe9735a/886b0a6e9a1a49f3af6ab1e0be9e2628 [2021-11-02 20:06:41,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 20:06:41,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 20:06:41,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 20:06:41,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 20:06:41,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 20:06:41,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:06:41" (1/1) ... [2021-11-02 20:06:41,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f315d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:41, skipping insertion in model container [2021-11-02 20:06:41,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:06:41" (1/1) ... [2021-11-02 20:06:41,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 20:06:41,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 20:06:44,002 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i[401063,401076] [2021-11-02 20:06:44,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:06:44,182 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 20:06:44,597 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i[401063,401076] [2021-11-02 20:06:44,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:06:44,852 INFO L208 MainTranslator]: Completed translation [2021-11-02 20:06:44,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:44 WrapperNode [2021-11-02 20:06:44,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 20:06:44,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 20:06:44,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 20:06:44,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 20:06:44,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:44" (1/1) ... [2021-11-02 20:06:44,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:44" (1/1) ... [2021-11-02 20:06:49,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 20:06:49,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 20:06:49,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 20:06:49,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 20:06:49,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:44" (1/1) ... [2021-11-02 20:06:49,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:44" (1/1) ... [2021-11-02 20:06:50,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:44" (1/1) ... [2021-11-02 20:06:50,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:44" (1/1) ... [2021-11-02 20:06:52,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:44" (1/1) ... [2021-11-02 20:06:52,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:44" (1/1) ... [2021-11-02 20:06:53,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:44" (1/1) ... [2021-11-02 20:06:53,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 20:06:53,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 20:06:53,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 20:06:53,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 20:06:53,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:44" (1/1) ... [2021-11-02 20:06:53,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:06:53,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:06:53,628 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 20:06:53,647 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 20:06:53,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 20:06:53,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 20:06:53,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 20:06:53,662 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_destroy [2021-11-02 20:06:53,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_destroy [2021-11-02 20:06:53,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 20:06:53,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 20:06:53,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 20:06:53,663 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 20:06:53,663 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 20:06:53,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 20:06:53,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 20:06:53,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 20:06:53,663 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-02 20:06:53,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 20:06:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 20:06:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-02 20:06:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked [2021-11-02 20:06:53,664 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked [2021-11-02 20:06:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_free [2021-11-02 20:06:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 20:06:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2021-11-02 20:06:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 20:06:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 20:06:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put_mutex [2021-11-02 20:06:53,665 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put_mutex [2021-11-02 20:06:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 20:06:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 20:07:06,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 20:07:06,781 INFO L299 CfgBuilder]: Removed 33286 assume(true) statements. [2021-11-02 20:07:06,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:06 BoogieIcfgContainer [2021-11-02 20:07:06,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 20:07:06,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 20:07:06,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 20:07:06,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 20:07:06,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:06:41" (1/3) ... [2021-11-02 20:07:06,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b6eef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:07:06, skipping insertion in model container [2021-11-02 20:07:06,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:44" (2/3) ... [2021-11-02 20:07:06,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b6eef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:07:06, skipping insertion in model container [2021-11-02 20:07:06,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:06" (3/3) ... [2021-11-02 20:07:06,814 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2021-11-02 20:07:06,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 20:07:06,818 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 20:07:06,930 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 20:07:06,935 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 20:07:06,936 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 20:07:07,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 20658 states, 20637 states have (on average 1.2186364297136212) internal successors, (25149), 20639 states have internal predecessors, (25149), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-02 20:07:07,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 20:07:07,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:07:07,178 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, 1, 1, 1, 1] [2021-11-02 20:07:07,178 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:07:07,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:07:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash 486390444, now seen corresponding path program 1 times [2021-11-02 20:07:07,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:07:07,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529851334] [2021-11-02 20:07:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:07:07,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:07:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:07:07,844 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 20:07:07,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:07:07,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529851334] [2021-11-02 20:07:07,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529851334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:07:07,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:07:07,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:07:07,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598790819] [2021-11-02 20:07:07,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 20:07:07,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:07:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 20:07:07,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:07:07,957 INFO L87 Difference]: Start difference. First operand has 20658 states, 20637 states have (on average 1.2186364297136212) internal successors, (25149), 20639 states have internal predecessors, (25149), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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 20:07:15,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:07:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:07:50,148 INFO L93 Difference]: Finished difference Result 41312 states and 50353 transitions. [2021-11-02 20:07:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 20:07:50,152 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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 75 [2021-11-02 20:07:50,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:07:50,247 INFO L225 Difference]: With dead ends: 41312 [2021-11-02 20:07:50,247 INFO L226 Difference]: Without dead ends: 20633 [2021-11-02 20:07:50,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:07:50,301 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25042 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36396.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 25043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25042 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41385.82ms IncrementalHoareTripleChecker+Time [2021-11-02 20:07:50,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 25043 Unknown, 0 Unchecked, 23.38ms Time], IncrementalHoareTripleChecker [0 Valid, 25042 Invalid, 1 Unknown, 0 Unchecked, 41385.82ms Time] [2021-11-02 20:07:50,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20633 states. [2021-11-02 20:07:50,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20633 to 20633. [2021-11-02 20:07:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20633 states, 20613 states have (on average 1.213700092174841) internal successors, (25018), 20614 states have internal predecessors, (25018), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-02 20:07:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20633 states to 20633 states and 25048 transitions. [2021-11-02 20:07:50,949 INFO L78 Accepts]: Start accepts. Automaton has 20633 states and 25048 transitions. Word has length 75 [2021-11-02 20:07:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:07:50,949 INFO L470 AbstractCegarLoop]: Abstraction has 20633 states and 25048 transitions. [2021-11-02 20:07:50,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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 20:07:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 20633 states and 25048 transitions. [2021-11-02 20:07:50,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 20:07:50,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:07:50,953 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, 1, 1, 1, 1] [2021-11-02 20:07:50,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 20:07:50,953 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:07:50,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:07:50,954 INFO L85 PathProgramCache]: Analyzing trace with hash -379341858, now seen corresponding path program 1 times [2021-11-02 20:07:50,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:07:50,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141327725] [2021-11-02 20:07:50,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:07:50,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:07:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:07:51,573 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 20:07:51,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:07:51,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141327725] [2021-11-02 20:07:51,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141327725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:07:51,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:07:51,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:07:51,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529751228] [2021-11-02 20:07:51,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:07:51,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:07:51,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:07:51,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:07:51,580 INFO L87 Difference]: Start difference. First operand 20633 states and 25048 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 20:07:57,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 20:08:02,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:08:04,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:08:07,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:09:21,542 INFO L93 Difference]: Finished difference Result 41251 states and 50105 transitions. [2021-11-02 20:09:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:09:21,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2021-11-02 20:09:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:09:21,615 INFO L225 Difference]: With dead ends: 41251 [2021-11-02 20:09:21,615 INFO L226 Difference]: Without dead ends: 20658 [2021-11-02 20:09:21,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:09:21,658 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 24933 mSDsCounter, 0 mSdLazyCounter, 50003 mSolverCounterSat, 48 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79951.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 50055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.59ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 50003 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89037.64ms IncrementalHoareTripleChecker+Time [2021-11-02 20:09:21,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 50055 Unknown, 0 Unchecked, 79.59ms Time], IncrementalHoareTripleChecker [48 Valid, 50003 Invalid, 4 Unknown, 0 Unchecked, 89037.64ms Time] [2021-11-02 20:09:21,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20658 states. [2021-11-02 20:09:22,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20658 to 20658. [2021-11-02 20:09:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20658 states, 20638 states have (on average 1.2134412249248958) internal successors, (25043), 20639 states have internal predecessors, (25043), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-02 20:09:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20658 states to 20658 states and 25073 transitions. [2021-11-02 20:09:22,179 INFO L78 Accepts]: Start accepts. Automaton has 20658 states and 25073 transitions. Word has length 75 [2021-11-02 20:09:22,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:09:22,179 INFO L470 AbstractCegarLoop]: Abstraction has 20658 states and 25073 transitions. [2021-11-02 20:09:22,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 20:09:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 20658 states and 25073 transitions. [2021-11-02 20:09:22,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 20:09:22,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:09:22,187 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:09:22,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 20:09:22,188 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:09:22,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:09:22,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1095068966, now seen corresponding path program 1 times [2021-11-02 20:09:22,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:09:22,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753113755] [2021-11-02 20:09:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:09:22,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:09:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:09:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 20:09:22,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:09:22,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753113755] [2021-11-02 20:09:22,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753113755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:09:22,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:09:22,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:09:22,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353283628] [2021-11-02 20:09:22,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:09:22,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:09:22,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:09:22,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:09:22,486 INFO L87 Difference]: Start difference. First operand 20658 states and 25073 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 20:09:28,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 20:09:33,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:09:35,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:27,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:11:03,134 INFO L93 Difference]: Finished difference Result 41273 states and 50105 transitions. [2021-11-02 20:11:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:11:03,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-02 20:11:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:11:03,177 INFO L225 Difference]: With dead ends: 41273 [2021-11-02 20:11:03,177 INFO L226 Difference]: Without dead ends: 20663 [2021-11-02 20:11:03,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:11:03,211 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 24934 mSDsCounter, 0 mSdLazyCounter, 50025 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88301.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 50036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.93ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50025 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99804.82ms IncrementalHoareTripleChecker+Time [2021-11-02 20:11:03,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 50036 Unknown, 0 Unchecked, 66.93ms Time], IncrementalHoareTripleChecker [8 Valid, 50025 Invalid, 3 Unknown, 0 Unchecked, 99804.82ms Time] [2021-11-02 20:11:03,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20663 states. [2021-11-02 20:11:03,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20663 to 20663. [2021-11-02 20:11:03,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20663 states, 20643 states have (on average 1.2133895267160781) internal successors, (25048), 20644 states have internal predecessors, (25048), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-02 20:11:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20663 states to 20663 states and 25078 transitions. [2021-11-02 20:11:03,594 INFO L78 Accepts]: Start accepts. Automaton has 20663 states and 25078 transitions. Word has length 79 [2021-11-02 20:11:03,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:11:03,596 INFO L470 AbstractCegarLoop]: Abstraction has 20663 states and 25078 transitions. [2021-11-02 20:11:03,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 20:11:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 20663 states and 25078 transitions. [2021-11-02 20:11:03,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 20:11:03,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:11:03,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:11:03,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 20:11:03,599 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:11:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:11:03,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2019218006, now seen corresponding path program 1 times [2021-11-02 20:11:03,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:11:03,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895623929] [2021-11-02 20:11:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:11:03,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:11:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:11:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 20:11:03,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:11:03,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895623929] [2021-11-02 20:11:03,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895623929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:11:03,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:11:03,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:11:03,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633234429] [2021-11-02 20:11:03,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:11:03,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:11:03,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:11:03,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:11:03,925 INFO L87 Difference]: Start difference. First operand 20663 states and 25078 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 20:11:07,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 20:11:16,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:24,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:38,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:13:38,613 INFO L93 Difference]: Finished difference Result 61683 states and 74894 transitions. [2021-11-02 20:13:38,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:13:38,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-02 20:13:38,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:13:38,695 INFO L225 Difference]: With dead ends: 61683 [2021-11-02 20:13:38,695 INFO L226 Difference]: Without dead ends: 41091 [2021-11-02 20:13:38,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:13:38,734 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 24789 mSDsluCounter, 25027 mSDsCounter, 0 mSdLazyCounter, 50070 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130409.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24789 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 50076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 120.68ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50070 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152759.47ms IncrementalHoareTripleChecker+Time [2021-11-02 20:13:38,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24789 Valid, 76 Invalid, 50076 Unknown, 0 Unchecked, 120.68ms Time], IncrementalHoareTripleChecker [3 Valid, 50070 Invalid, 3 Unknown, 0 Unchecked, 152759.47ms Time] [2021-11-02 20:13:38,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41091 states. [2021-11-02 20:13:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41091 to 41053. [2021-11-02 20:13:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41053 states, 41015 states have (on average 1.2136047787394855) internal successors, (49776), 41017 states have internal predecessors, (49776), 29 states have call successors, (29), 8 states have call predecessors, (29), 8 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-02 20:13:39,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41053 states to 41053 states and 49834 transitions. [2021-11-02 20:13:39,535 INFO L78 Accepts]: Start accepts. Automaton has 41053 states and 49834 transitions. Word has length 83 [2021-11-02 20:13:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:13:39,536 INFO L470 AbstractCegarLoop]: Abstraction has 41053 states and 49834 transitions. [2021-11-02 20:13:39,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 20:13:39,536 INFO L276 IsEmpty]: Start isEmpty. Operand 41053 states and 49834 transitions. [2021-11-02 20:13:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 20:13:39,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:13:39,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:13:39,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 20:13:39,538 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:13:39,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:13:39,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1968635604, now seen corresponding path program 1 times [2021-11-02 20:13:39,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:13:39,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975424010] [2021-11-02 20:13:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:13:39,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:13:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:13:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 20:13:39,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:13:39,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975424010] [2021-11-02 20:13:39,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975424010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:13:39,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:13:39,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:13:39,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395573320] [2021-11-02 20:13:39,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:13:39,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:13:39,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:13:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:13:39,912 INFO L87 Difference]: Start difference. First operand 41053 states and 49834 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 20:13:45,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 20:13:50,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:51,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:55,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:16:55,500 INFO L93 Difference]: Finished difference Result 81837 states and 99333 transitions. [2021-11-02 20:16:55,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:16:55,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 88 [2021-11-02 20:16:55,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:16:55,663 INFO L225 Difference]: With dead ends: 81837 [2021-11-02 20:16:55,663 INFO L226 Difference]: Without dead ends: 81833 [2021-11-02 20:16:55,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:16:55,695 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 24830 mSDsluCounter, 24974 mSDsCounter, 0 mSdLazyCounter, 49961 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158820.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24830 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 49963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 124.15ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49961 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193069.19ms IncrementalHoareTripleChecker+Time [2021-11-02 20:16:55,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24830 Valid, 75 Invalid, 49963 Unknown, 0 Unchecked, 124.15ms Time], IncrementalHoareTripleChecker [0 Valid, 49961 Invalid, 2 Unknown, 0 Unchecked, 193069.19ms Time] [2021-11-02 20:16:55,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81833 states. [2021-11-02 20:16:57,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81833 to 81757. [2021-11-02 20:16:57,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81757 states, 81682 states have (on average 1.2131803824588037) internal successors, (99095), 81686 states have internal predecessors, (99095), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-02 20:16:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81757 states to 81757 states and 99211 transitions. [2021-11-02 20:16:57,454 INFO L78 Accepts]: Start accepts. Automaton has 81757 states and 99211 transitions. Word has length 88 [2021-11-02 20:16:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:16:57,454 INFO L470 AbstractCegarLoop]: Abstraction has 81757 states and 99211 transitions. [2021-11-02 20:16:57,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 20:16:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 81757 states and 99211 transitions. [2021-11-02 20:16:57,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-02 20:16:57,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:16:57,468 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:16:57,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 20:16:57,468 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 20:16:57,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:16:57,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1950033087, now seen corresponding path program 1 times [2021-11-02 20:16:57,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:16:57,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246901537] [2021-11-02 20:16:57,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:16:57,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:16:57,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 20:16:57,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468576766] [2021-11-02 20:16:57,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:16:57,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:16:57,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:16:57,598 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 20:16:57,602 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 20:16:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:16:59,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 5860 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 20:16:59,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:17:00,020 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 20:17:00,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 20:17:00,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:17:00,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246901537] [2021-11-02 20:17:00,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 20:17:00,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468576766] [2021-11-02 20:17:00,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468576766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:17:00,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:17:00,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:17:00,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172140770] [2021-11-02 20:17:00,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:17:00,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:17:00,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:17:00,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:17:00,023 INFO L87 Difference]: Start difference. First operand 81757 states and 99211 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 20:17:37,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 20:17:59,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:18:34,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15