./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-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-32_7a-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 7e3ac2fcc053a51503ae18580c98d5f9812f019f35610d9038863980fd24a66a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 16:24:17,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:24:17,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:24:17,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:24:17,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:24:17,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:24:17,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:24:17,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:24:17,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:24:17,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:24:17,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:24:17,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:24:17,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:24:17,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:24:17,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:24:17,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:24:17,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:24:17,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:24:17,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:24:17,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:24:17,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:24:17,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:24:17,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:24:17,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:24:17,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:24:17,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:24:17,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:24:17,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:24:17,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:24:17,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:24:17,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:24:17,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:24:17,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:24:17,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:24:17,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:24:17,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:24:17,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:24:17,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:24:17,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:24:17,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:24:17,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:24:17,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:24:17,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:24:17,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:24:17,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:24:17,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:24:17,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:24:17,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:24:17,784 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:24:17,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:24:17,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:24:17,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:24:17,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:24:17,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:24:17,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:24:17,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:24:17,787 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:24:17,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:24:17,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:24:17,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:24:17,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:24:17,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:24:17,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:24:17,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:24:17,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:24:17,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:24:17,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:24:17,789 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:24:17,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:24:17,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:24:17,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:24:17,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e3ac2fcc053a51503ae18580c98d5f9812f019f35610d9038863980fd24a66a [2021-11-06 16:24:18,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:24:18,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:24:18,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:24:18,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:24:18,084 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:24:18,085 INFO L432 ainManager$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-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2021-11-06 16:24:18,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/217b830d2/b77813a2f54b4cafba6a8786606b908d/FLAG943da8b49 [2021-11-06 16:24:18,909 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:24:18,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2021-11-06 16:24:18,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/217b830d2/b77813a2f54b4cafba6a8786606b908d/FLAG943da8b49 [2021-11-06 16:24:19,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/217b830d2/b77813a2f54b4cafba6a8786606b908d [2021-11-06 16:24:19,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:24:19,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:24:19,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:24:19,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:24:19,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:24:19,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:24:19" (1/1) ... [2021-11-06 16:24:19,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fce0a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:19, skipping insertion in model container [2021-11-06 16:24:19,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:24:19" (1/1) ... [2021-11-06 16:24:19,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:24:19,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:24:22,860 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-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i[423705,423718] [2021-11-06 16:24:23,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:24:23,215 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:24:23,831 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-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i[423705,423718] [2021-11-06 16:24:23,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:24:24,231 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:24:24,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:24 WrapperNode [2021-11-06 16:24:24,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:24:24,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:24:24,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:24:24,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:24:24,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:24" (1/1) ... [2021-11-06 16:24:24,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:24" (1/1) ... [2021-11-06 16:24:29,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:24:29,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:24:29,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:24:29,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:24:29,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:24" (1/1) ... [2021-11-06 16:24:29,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:24" (1/1) ... [2021-11-06 16:24:30,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:24" (1/1) ... [2021-11-06 16:24:30,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:24" (1/1) ... [2021-11-06 16:24:31,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:24" (1/1) ... [2021-11-06 16:24:32,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:24" (1/1) ... [2021-11-06 16:24:32,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:24" (1/1) ... [2021-11-06 16:24:33,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:24:33,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:24:33,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:24:33,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:24:33,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:24" (1/1) ... [2021-11-06 16:24:33,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:24:33,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:24:33,090 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) [2021-11-06 16:24:33,092 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 [2021-11-06 16:24:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:24:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 16:24:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 16:24:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:24:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:24:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:24:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 16:24:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:24:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:24:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 16:24:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 16:24:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 16:24:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:24:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2021-11-06 16:24:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:24:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:24:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:24:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:25:28,330 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:25:28,330 INFO L299 CfgBuilder]: Removed 33698 assume(true) statements. [2021-11-06 16:25:28,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:25:28 BoogieIcfgContainer [2021-11-06 16:25:28,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:25:28,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:25:28,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:25:28,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:25:28,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:24:19" (1/3) ... [2021-11-06 16:25:28,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4deece4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:25:28, skipping insertion in model container [2021-11-06 16:25:28,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:24:24" (2/3) ... [2021-11-06 16:25:28,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4deece4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:25:28, skipping insertion in model container [2021-11-06 16:25:28,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:25:28" (3/3) ... [2021-11-06 16:25:28,356 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2021-11-06 16:25:28,361 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:25:28,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2021-11-06 16:25:28,471 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:25:28,482 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 [2021-11-06 16:25:28,487 INFO L340 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2021-11-06 16:25:28,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 20975 states, 20889 states have (on average 1.2228445593374504) internal successors, (25544), 20974 states have internal predecessors, (25544), 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) [2021-11-06 16:25:28,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 16:25:28,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:25:28,727 INFO L513 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] [2021-11-06 16:25:28,727 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr78ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 82 more)] === [2021-11-06 16:25:28,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:25:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1308193230, now seen corresponding path program 1 times [2021-11-06 16:25:28,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:25:28,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337851954] [2021-11-06 16:25:28,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:25:28,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:25:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:25:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:25:29,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:25:29,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337851954] [2021-11-06 16:25:29,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337851954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:25:29,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:25:29,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:25:29,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045579662] [2021-11-06 16:25:29,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 16:25:29,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:25:29,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 16:25:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:25:29,654 INFO L87 Difference]: Start difference. First operand has 20975 states, 20889 states have (on average 1.2228445593374504) internal successors, (25544), 20974 states have internal predecessors, (25544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2021-11-06 16:25:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:25:30,165 INFO L93 Difference]: Finished difference Result 41946 states and 51083 transitions. [2021-11-06 16:25:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 16:25:30,167 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 [2021-11-06 16:25:30,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:25:30,271 INFO L225 Difference]: With dead ends: 41946 [2021-11-06 16:25:30,271 INFO L226 Difference]: Without dead ends: 20950 [2021-11-06 16:25:30,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:25:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20950 states. [2021-11-06 16:25:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20950 to 20950. [2021-11-06 16:25:30,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20950 states, 20865 states have (on average 1.2139468008626888) internal successors, (25329), 20949 states have internal predecessors, (25329), 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) [2021-11-06 16:25:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20950 states to 20950 states and 25329 transitions. [2021-11-06 16:25:31,199 INFO L78 Accepts]: Start accepts. Automaton has 20950 states and 25329 transitions. Word has length 75 [2021-11-06 16:25:31,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:25:31,200 INFO L470 AbstractCegarLoop]: Abstraction has 20950 states and 25329 transitions. [2021-11-06 16:25:31,200 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) [2021-11-06 16:25:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 20950 states and 25329 transitions. [2021-11-06 16:25:31,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 16:25:31,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:25:31,219 INFO L513 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] [2021-11-06 16:25:31,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:25:31,219 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr78ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 82 more)] === [2021-11-06 16:25:31,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:25:31,222 INFO L85 PathProgramCache]: Analyzing trace with hash -199472284, now seen corresponding path program 1 times [2021-11-06 16:25:31,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:25:31,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029312715] [2021-11-06 16:25:31,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:25:31,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:25:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:25:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:25:31,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:25:31,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029312715] [2021-11-06 16:25:31,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029312715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:25:31,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:25:31,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:25:31,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794985619] [2021-11-06 16:25:31,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:25:31,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:25:31,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:25:31,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:25:31,676 INFO L87 Difference]: Start difference. First operand 20950 states and 25329 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) [2021-11-06 16:25:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:25:35,166 INFO L93 Difference]: Finished difference Result 62600 states and 75719 transitions. [2021-11-06 16:25:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:25:35,171 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 [2021-11-06 16:25:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:25:35,300 INFO L225 Difference]: With dead ends: 62600 [2021-11-06 16:25:35,300 INFO L226 Difference]: Without dead ends: 41713 [2021-11-06 16:25:35,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:25:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41713 states. [2021-11-06 16:25:36,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41713 to 41557. [2021-11-06 16:25:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41557 states, 41472 states have (on average 1.214795524691358) internal successors, (50380), 41556 states have internal predecessors, (50380), 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) [2021-11-06 16:25:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41557 states to 41557 states and 50380 transitions. [2021-11-06 16:25:36,453 INFO L78 Accepts]: Start accepts. Automaton has 41557 states and 50380 transitions. Word has length 75 [2021-11-06 16:25:36,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:25:36,455 INFO L470 AbstractCegarLoop]: Abstraction has 41557 states and 50380 transitions. [2021-11-06 16:25:36,455 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) [2021-11-06 16:25:36,455 INFO L276 IsEmpty]: Start isEmpty. Operand 41557 states and 50380 transitions. [2021-11-06 16:25:36,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 16:25:36,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:25:36,463 INFO L513 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] [2021-11-06 16:25:36,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:25:36,466 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 82 more)] === [2021-11-06 16:25:36,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:25:36,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1579573098, now seen corresponding path program 1 times [2021-11-06 16:25:36,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:25:36,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433055758] [2021-11-06 16:25:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:25:36,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:25:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:25:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:25:36,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:25:36,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433055758] [2021-11-06 16:25:36,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433055758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:25:36,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:25:36,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:25:36,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472219537] [2021-11-06 16:25:36,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:25:36,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:25:36,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:25:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:25:36,852 INFO L87 Difference]: Start difference. First operand 41557 states and 50380 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) [2021-11-06 16:25:38,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:25:38,446 INFO L93 Difference]: Finished difference Result 115734 states and 140363 transitions. [2021-11-06 16:25:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:25:38,447 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 [2021-11-06 16:25:38,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:25:38,836 INFO L225 Difference]: With dead ends: 115734 [2021-11-06 16:25:38,837 INFO L226 Difference]: Without dead ends: 74240 [2021-11-06 16:25:38,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:25:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74240 states. [2021-11-06 16:25:40,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74240 to 74032. [2021-11-06 16:25:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74032 states, 73947 states have (on average 1.2158708264026938) internal successors, (89910), 74031 states have internal predecessors, (89910), 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) [2021-11-06 16:25:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74032 states to 74032 states and 89910 transitions. [2021-11-06 16:25:40,754 INFO L78 Accepts]: Start accepts. Automaton has 74032 states and 89910 transitions. Word has length 79 [2021-11-06 16:25:40,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:25:40,754 INFO L470 AbstractCegarLoop]: Abstraction has 74032 states and 89910 transitions. [2021-11-06 16:25:40,754 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) [2021-11-06 16:25:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 74032 states and 89910 transitions. [2021-11-06 16:25:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 16:25:40,756 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:25:40,757 INFO L513 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] [2021-11-06 16:25:40,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:25:40,757 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr78ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 82 more)] === [2021-11-06 16:25:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:25:40,758 INFO L85 PathProgramCache]: Analyzing trace with hash -325866876, now seen corresponding path program 1 times [2021-11-06 16:25:40,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:25:40,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023058780] [2021-11-06 16:25:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:25:40,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:25:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:25:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:25:41,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:25:41,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023058780] [2021-11-06 16:25:41,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023058780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:25:41,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:25:41,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:25:41,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250954398] [2021-11-06 16:25:41,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:25:41,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:25:41,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:25:41,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:25:41,151 INFO L87 Difference]: Start difference. First operand 74032 states and 89910 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2021-11-06 16:25:43,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:25:43,350 INFO L93 Difference]: Finished difference Result 147353 states and 178962 transitions. [2021-11-06 16:25:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:25:43,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2021-11-06 16:25:43,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:25:43,689 INFO L225 Difference]: With dead ends: 147353 [2021-11-06 16:25:43,689 INFO L226 Difference]: Without dead ends: 147243 [2021-11-06 16:25:43,743 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:25:43,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147243 states. [2021-11-06 16:25:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147243 to 147195. [2021-11-06 16:25:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147195 states, 147110 states have (on average 1.2145469376656923) internal successors, (178672), 147194 states have internal predecessors, (178672), 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) [2021-11-06 16:25:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147195 states to 147195 states and 178672 transitions. [2021-11-06 16:25:46,922 INFO L78 Accepts]: Start accepts. Automaton has 147195 states and 178672 transitions. Word has length 80 [2021-11-06 16:25:46,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:25:46,923 INFO L470 AbstractCegarLoop]: Abstraction has 147195 states and 178672 transitions. [2021-11-06 16:25:46,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2021-11-06 16:25:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 147195 states and 178672 transitions. [2021-11-06 16:25:46,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 16:25:46,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:25:46,924 INFO L513 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] [2021-11-06 16:25:46,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 16:25:46,925 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr79ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 82 more)] === [2021-11-06 16:25:46,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:25:46,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1511872690, now seen corresponding path program 1 times [2021-11-06 16:25:46,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:25:46,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284183605] [2021-11-06 16:25:46,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:25:46,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:25:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:25:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:25:47,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:25:47,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284183605] [2021-11-06 16:25:47,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284183605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:25:47,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:25:47,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:25:47,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797242000] [2021-11-06 16:25:47,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:25:47,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:25:47,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:25:47,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:25:47,584 INFO L87 Difference]: Start difference. First operand 147195 states and 178672 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-06 16:25:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:25:49,729 INFO L93 Difference]: Finished difference Result 147195 states and 178672 transitions. [2021-11-06 16:25:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:25:49,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2021-11-06 16:25:49,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:25:50,075 INFO L225 Difference]: With dead ends: 147195 [2021-11-06 16:25:50,075 INFO L226 Difference]: Without dead ends: 147193 [2021-11-06 16:25:50,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:25:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147193 states. [2021-11-06 16:25:53,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147193 to 147193. [2021-11-06 16:25:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147193 states, 147109 states have (on average 1.2145415984066237) internal successors, (178670), 147192 states have internal predecessors, (178670), 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) [2021-11-06 16:25:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147193 states to 147193 states and 178670 transitions. [2021-11-06 16:25:53,742 INFO L78 Accepts]: Start accepts. Automaton has 147193 states and 178670 transitions. Word has length 81 [2021-11-06 16:25:53,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:25:53,742 INFO L470 AbstractCegarLoop]: Abstraction has 147193 states and 178670 transitions. [2021-11-06 16:25:53,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-06 16:25:53,743 INFO L276 IsEmpty]: Start isEmpty. Operand 147193 states and 178670 transitions. [2021-11-06 16:25:53,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 16:25:53,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:25:53,744 INFO L513 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] [2021-11-06 16:25:53,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 16:25:53,745 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr80ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 82 more)] === [2021-11-06 16:25:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:25:53,745 INFO L85 PathProgramCache]: Analyzing trace with hash 376652750, now seen corresponding path program 1 times [2021-11-06 16:25:53,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:25:53,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784670522] [2021-11-06 16:25:53,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:25:53,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:25:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:25:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:25:54,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:25:54,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784670522] [2021-11-06 16:25:54,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784670522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:25:54,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:25:54,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:25:54,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540767212] [2021-11-06 16:25:54,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:25:54,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:25:54,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:25:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:25:54,039 INFO L87 Difference]: Start difference. First operand 147193 states and 178670 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2021-11-06 16:25:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:25:56,588 INFO L93 Difference]: Finished difference Result 147193 states and 178670 transitions. [2021-11-06 16:25:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:25:56,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 82 [2021-11-06 16:25:56,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:25:56,863 INFO L225 Difference]: With dead ends: 147193 [2021-11-06 16:25:56,863 INFO L226 Difference]: Without dead ends: 147191 [2021-11-06 16:25:56,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:25:57,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147191 states. [2021-11-06 16:26:00,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147191 to 147191. [2021-11-06 16:26:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147191 states, 147108 states have (on average 1.2145362590749653) internal successors, (178668), 147190 states have internal predecessors, (178668), 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) [2021-11-06 16:26:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147191 states to 147191 states and 178668 transitions. [2021-11-06 16:26:00,740 INFO L78 Accepts]: Start accepts. Automaton has 147191 states and 178668 transitions. Word has length 82 [2021-11-06 16:26:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:26:00,740 INFO L470 AbstractCegarLoop]: Abstraction has 147191 states and 178668 transitions. [2021-11-06 16:26:00,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2021-11-06 16:26:00,740 INFO L276 IsEmpty]: Start isEmpty. Operand 147191 states and 178668 transitions. [2021-11-06 16:26:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 16:26:00,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:26:00,742 INFO L513 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] [2021-11-06 16:26:00,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 16:26:00,742 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr81ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 82 more)] === [2021-11-06 16:26:00,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:26:00,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1208600744, now seen corresponding path program 1 times [2021-11-06 16:26:00,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:26:00,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54856890] [2021-11-06 16:26:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:26:00,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:26:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:26:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:26:01,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:26:01,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54856890] [2021-11-06 16:26:01,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54856890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:26:01,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:26:01,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:26:01,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414688918] [2021-11-06 16:26:01,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:26:01,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:26:01,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:26:01,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:26:01,036 INFO L87 Difference]: Start difference. First operand 147191 states and 178668 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 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)