./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-43_2a-drivers--net--ethernet--icplus--ipg.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-43_2a-drivers--net--ethernet--icplus--ipg.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 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:22:36,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:22:36,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:22:36,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:22:36,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:22:36,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:22:36,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:22:36,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:22:36,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:22:36,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:22:36,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:22:36,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:22:36,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:22:36,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:22:36,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:22:36,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:22:36,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:22:36,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:22:36,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:22:36,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:22:36,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:22:36,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:22:36,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:22:36,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:22:36,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:22:36,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:22:36,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:22:36,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:22:36,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:22:36,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:22:36,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:22:36,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:22:36,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:22:36,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:22:36,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:22:36,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:22:36,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:22:36,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:22:36,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:22:36,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:22:36,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:22:36,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:22:36,890 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:22:36,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:22:36,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:22:36,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:22:36,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:22:36,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:22:36,895 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:22:36,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:22:36,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:22:36,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:22:36,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:22:36,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:22:36,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:22:36,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:22:36,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:22:36,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:22:36,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:22:36,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:22:36,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:22:36,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:22:36,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:22:36,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:22:36,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:22:36,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:22:36,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:22:36,899 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:22:36,899 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:22:36,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:22:36,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:22:36,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce [2021-11-06 17:22:37,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:22:37,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:22:37,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:22:37,132 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:22:37,133 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:22:37,134 INFO L432 ainManager$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-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-06 17:22:37,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4799f9a29/099ea19ada1642ad896de783d874d4a7/FLAGd0f19eb08 [2021-11-06 17:22:37,730 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:22:37,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-06 17:22:37,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4799f9a29/099ea19ada1642ad896de783d874d4a7/FLAGd0f19eb08 [2021-11-06 17:22:37,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4799f9a29/099ea19ada1642ad896de783d874d4a7 [2021-11-06 17:22:37,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:22:37,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:22:37,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:22:37,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:22:37,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:22:37,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:22:37" (1/1) ... [2021-11-06 17:22:37,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f5fabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:37, skipping insertion in model container [2021-11-06 17:22:37,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:22:37" (1/1) ... [2021-11-06 17:22:37,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:22:38,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:22:39,344 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-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-11-06 17:22:39,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:22:39,426 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:22:39,677 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-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-11-06 17:22:39,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:22:39,779 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:22:39,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:39 WrapperNode [2021-11-06 17:22:39,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:22:39,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:22:39,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:22:39,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:22:39,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:39" (1/1) ... [2021-11-06 17:22:39,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:39" (1/1) ... [2021-11-06 17:22:40,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:22:40,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:22:40,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:22:40,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:22:40,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:39" (1/1) ... [2021-11-06 17:22:40,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:39" (1/1) ... [2021-11-06 17:22:40,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:39" (1/1) ... [2021-11-06 17:22:40,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:39" (1/1) ... [2021-11-06 17:22:41,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:39" (1/1) ... [2021-11-06 17:22:41,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:39" (1/1) ... [2021-11-06 17:22:41,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:39" (1/1) ... [2021-11-06 17:22:41,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:22:41,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:22:41,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:22:41,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:22:41,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:39" (1/1) ... [2021-11-06 17:22:41,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:22:41,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:22:41,823 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 17:22:41,841 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 17:22:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:22:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:22:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:22:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:22:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:22:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:22:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:22:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:22:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:22:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:22:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:22:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:22:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:22:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:22:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:22:53,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:22:53,236 INFO L299 CfgBuilder]: Removed 6500 assume(true) statements. [2021-11-06 17:22:53,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:22:53 BoogieIcfgContainer [2021-11-06 17:22:53,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:22:53,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:22:53,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:22:53,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:22:53,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:22:37" (1/3) ... [2021-11-06 17:22:53,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e83bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:22:53, skipping insertion in model container [2021-11-06 17:22:53,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:22:39" (2/3) ... [2021-11-06 17:22:53,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e83bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:22:53, skipping insertion in model container [2021-11-06 17:22:53,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:22:53" (3/3) ... [2021-11-06 17:22:53,250 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-06 17:22:53,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:22:53,254 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-11-06 17:22:53,313 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:22:53,319 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 17:22:53,319 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-11-06 17:22:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 5295 states, 5271 states have (on average 1.3200531208499335) internal successors, (6958), 5294 states have internal predecessors, (6958), 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 17:22:53,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 17:22:53,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:22:53,415 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] [2021-11-06 17:22:53,416 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 17:22:53,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:22:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1578018257, now seen corresponding path program 1 times [2021-11-06 17:22:53,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:22:53,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803802196] [2021-11-06 17:22:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:22:53,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:22:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:22:53,821 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 17:22:53,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:22:53,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803802196] [2021-11-06 17:22:53,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803802196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:22:53,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:22:53,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:22:53,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819404828] [2021-11-06 17:22:53,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:22:53,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:22:53,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:22:53,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:22:53,855 INFO L87 Difference]: Start difference. First operand has 5295 states, 5271 states have (on average 1.3200531208499335) internal successors, (6958), 5294 states have internal predecessors, (6958), 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 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:22:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:22:53,979 INFO L93 Difference]: Finished difference Result 10496 states and 13791 transitions. [2021-11-06 17:22:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:22:53,981 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-06 17:22:53,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:22:54,013 INFO L225 Difference]: With dead ends: 10496 [2021-11-06 17:22:54,014 INFO L226 Difference]: Without dead ends: 5101 [2021-11-06 17:22:54,029 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 17:22:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2021-11-06 17:22:54,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 5101. [2021-11-06 17:22:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5078 states have (on average 1.288499409216227) internal successors, (6543), 5100 states have internal predecessors, (6543), 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 17:22:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 6543 transitions. [2021-11-06 17:22:54,187 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 6543 transitions. Word has length 43 [2021-11-06 17:22:54,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:22:54,187 INFO L470 AbstractCegarLoop]: Abstraction has 5101 states and 6543 transitions. [2021-11-06 17:22:54,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:22:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 6543 transitions. [2021-11-06 17:22:54,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 17:22:54,189 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:22:54,189 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] [2021-11-06 17:22:54,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:22:54,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 17:22:54,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:22:54,190 INFO L85 PathProgramCache]: Analyzing trace with hash 716061479, now seen corresponding path program 1 times [2021-11-06 17:22:54,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:22:54,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413046524] [2021-11-06 17:22:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:22:54,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:22:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:22:54,390 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 17:22:54,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:22:54,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413046524] [2021-11-06 17:22:54,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413046524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:22:54,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:22:54,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:22:54,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642540398] [2021-11-06 17:22:54,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:22:54,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:22:54,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:22:54,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:22:54,394 INFO L87 Difference]: Start difference. First operand 5101 states and 6543 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:22:54,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:22:54,840 INFO L93 Difference]: Finished difference Result 19415 states and 24755 transitions. [2021-11-06 17:22:54,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:22:54,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-06 17:22:54,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:22:54,889 INFO L225 Difference]: With dead ends: 19415 [2021-11-06 17:22:54,889 INFO L226 Difference]: Without dead ends: 14340 [2021-11-06 17:22:54,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:22:54,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14340 states. [2021-11-06 17:22:55,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14340 to 7494. [2021-11-06 17:22:55,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7494 states, 7471 states have (on average 1.2776067460848615) internal successors, (9545), 7493 states have internal predecessors, (9545), 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 17:22:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 9545 transitions. [2021-11-06 17:22:55,111 INFO L78 Accepts]: Start accepts. Automaton has 7494 states and 9545 transitions. Word has length 43 [2021-11-06 17:22:55,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:22:55,111 INFO L470 AbstractCegarLoop]: Abstraction has 7494 states and 9545 transitions. [2021-11-06 17:22:55,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:22:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 7494 states and 9545 transitions. [2021-11-06 17:22:55,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 17:22:55,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:22:55,113 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] [2021-11-06 17:22:55,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:22:55,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 17:22:55,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:22:55,114 INFO L85 PathProgramCache]: Analyzing trace with hash -268487873, now seen corresponding path program 1 times [2021-11-06 17:22:55,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:22:55,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256165483] [2021-11-06 17:22:55,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:22:55,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:22:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:22:55,226 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 17:22:55,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:22:55,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256165483] [2021-11-06 17:22:55,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256165483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:22:55,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:22:55,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:22:55,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613069882] [2021-11-06 17:22:55,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:22:55,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:22:55,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:22:55,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:22:55,233 INFO L87 Difference]: Start difference. First operand 7494 states and 9545 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 17:22:55,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:22:55,969 INFO L93 Difference]: Finished difference Result 31384 states and 39775 transitions. [2021-11-06 17:22:55,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:22:55,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-06 17:22:55,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:22:56,055 INFO L225 Difference]: With dead ends: 31384 [2021-11-06 17:22:56,056 INFO L226 Difference]: Without dead ends: 23916 [2021-11-06 17:22:56,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:22:56,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23916 states. [2021-11-06 17:22:56,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23916 to 14256. [2021-11-06 17:22:56,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14256 states, 14233 states have (on average 1.2751352490690648) internal successors, (18149), 14255 states have internal predecessors, (18149), 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 17:22:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14256 states to 14256 states and 18149 transitions. [2021-11-06 17:22:56,589 INFO L78 Accepts]: Start accepts. Automaton has 14256 states and 18149 transitions. Word has length 44 [2021-11-06 17:22:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:22:56,590 INFO L470 AbstractCegarLoop]: Abstraction has 14256 states and 18149 transitions. [2021-11-06 17:22:56,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 17:22:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 14256 states and 18149 transitions. [2021-11-06 17:22:56,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 17:22:56,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:22:56,600 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] [2021-11-06 17:22:56,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:22:56,600 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 17:22:56,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:22:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash -724744518, now seen corresponding path program 1 times [2021-11-06 17:22:56,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:22:56,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724822259] [2021-11-06 17:22:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:22:56,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:22:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:22:56,736 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 17:22:56,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:22:56,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724822259] [2021-11-06 17:22:56,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724822259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:22:56,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:22:56,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:22:56,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121068873] [2021-11-06 17:22:56,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:22:56,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:22:56,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:22:56,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:22:56,739 INFO L87 Difference]: Start difference. First operand 14256 states and 18149 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 17:22:57,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:22:57,790 INFO L93 Difference]: Finished difference Result 60606 states and 76751 transitions. [2021-11-06 17:22:57,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:22:57,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-06 17:22:57,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:22:57,922 INFO L225 Difference]: With dead ends: 60606 [2021-11-06 17:22:57,923 INFO L226 Difference]: Without dead ends: 46376 [2021-11-06 17:22:57,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:22:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46376 states. [2021-11-06 17:22:58,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46376 to 27129. [2021-11-06 17:22:58,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27129 states, 27106 states have (on average 1.2723382276986646) internal successors, (34488), 27128 states have internal predecessors, (34488), 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 17:22:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27129 states to 27129 states and 34488 transitions. [2021-11-06 17:22:58,837 INFO L78 Accepts]: Start accepts. Automaton has 27129 states and 34488 transitions. Word has length 45 [2021-11-06 17:22:58,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:22:58,837 INFO L470 AbstractCegarLoop]: Abstraction has 27129 states and 34488 transitions. [2021-11-06 17:22:58,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 17:22:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 27129 states and 34488 transitions. [2021-11-06 17:22:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 17:22:58,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:22:58,840 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] [2021-11-06 17:22:58,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:22:58,841 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 17:22:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:22:58,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1983796430, now seen corresponding path program 1 times [2021-11-06 17:22:58,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:22:58,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015702379] [2021-11-06 17:22:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:22:58,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:22:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:22:58,976 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 17:22:58,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:22:58,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015702379] [2021-11-06 17:22:58,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015702379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:22:58,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:22:58,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:22:58,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070418369] [2021-11-06 17:22:58,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:22:58,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:22:58,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:22:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:22:58,979 INFO L87 Difference]: Start difference. First operand 27129 states and 34488 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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 17:23:00,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:23:00,767 INFO L93 Difference]: Finished difference Result 117093 states and 148068 transitions. [2021-11-06 17:23:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:23:00,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-06 17:23:00,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:23:01,010 INFO L225 Difference]: With dead ends: 117093 [2021-11-06 17:23:01,011 INFO L226 Difference]: Without dead ends: 89990 [2021-11-06 17:23:01,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:23:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89990 states. [2021-11-06 17:23:02,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89990 to 51570. [2021-11-06 17:23:02,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51570 states, 51547 states have (on average 1.2691718237724794) internal successors, (65422), 51569 states have internal predecessors, (65422), 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 17:23:03,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51570 states to 51570 states and 65422 transitions. [2021-11-06 17:23:03,036 INFO L78 Accepts]: Start accepts. Automaton has 51570 states and 65422 transitions. Word has length 46 [2021-11-06 17:23:03,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:23:03,036 INFO L470 AbstractCegarLoop]: Abstraction has 51570 states and 65422 transitions. [2021-11-06 17:23:03,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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 17:23:03,036 INFO L276 IsEmpty]: Start isEmpty. Operand 51570 states and 65422 transitions. [2021-11-06 17:23:03,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 17:23:03,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:23:03,040 INFO L513 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] [2021-11-06 17:23:03,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:23:03,040 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 17:23:03,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:23:03,041 INFO L85 PathProgramCache]: Analyzing trace with hash 875621550, now seen corresponding path program 1 times [2021-11-06 17:23:03,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:23:03,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834451686] [2021-11-06 17:23:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:23:03,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:23:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:23:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 17:23:03,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:23:03,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834451686] [2021-11-06 17:23:03,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834451686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:23:03,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:23:03,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:23:03,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713132584] [2021-11-06 17:23:03,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:23:03,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:23:03,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:23:03,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:23:03,207 INFO L87 Difference]: Start difference. First operand 51570 states and 65422 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 17:23:06,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:23:06,295 INFO L93 Difference]: Finished difference Result 168638 states and 213388 transitions. [2021-11-06 17:23:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 17:23:06,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-06 17:23:06,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:23:06,591 INFO L225 Difference]: With dead ends: 168638 [2021-11-06 17:23:06,591 INFO L226 Difference]: Without dead ends: 117094 [2021-11-06 17:23:06,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 17:23:06,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117094 states. [2021-11-06 17:23:08,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117094 to 51610. [2021-11-06 17:23:08,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51610 states, 51587 states have (on average 1.2689631108612636) internal successors, (65462), 51609 states have internal predecessors, (65462), 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 17:23:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51610 states to 51610 states and 65462 transitions. [2021-11-06 17:23:08,900 INFO L78 Accepts]: Start accepts. Automaton has 51610 states and 65462 transitions. Word has length 51 [2021-11-06 17:23:08,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:23:08,902 INFO L470 AbstractCegarLoop]: Abstraction has 51610 states and 65462 transitions. [2021-11-06 17:23:08,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 17:23:08,905 INFO L276 IsEmpty]: Start isEmpty. Operand 51610 states and 65462 transitions. [2021-11-06 17:23:08,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 17:23:08,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:23:08,907 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] [2021-11-06 17:23:08,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:23:08,909 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 17:23:08,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:23:08,909 INFO L85 PathProgramCache]: Analyzing trace with hash 837480967, now seen corresponding path program 1 times [2021-11-06 17:23:08,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:23:08,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514663445] [2021-11-06 17:23:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:23:08,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:23:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:23:09,036 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 17:23:09,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:23:09,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514663445] [2021-11-06 17:23:09,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514663445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:23:09,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:23:09,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:23:09,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172605144] [2021-11-06 17:23:09,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:23:09,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:23:09,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:23:09,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:23:09,039 INFO L87 Difference]: Start difference. First operand 51610 states and 65462 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:23:10,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:23:10,550 INFO L93 Difference]: Finished difference Result 51610 states and 65462 transitions. [2021-11-06 17:23:10,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:23:10,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-06 17:23:10,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:23:10,672 INFO L225 Difference]: With dead ends: 51610 [2021-11-06 17:23:10,672 INFO L226 Difference]: Without dead ends: 51588 [2021-11-06 17:23:10,695 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 17:23:10,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51588 states. [2021-11-06 17:23:12,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51588 to 51588. [2021-11-06 17:23:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51588 states, 51576 states have (on average 1.2664611447184737) internal successors, (65319), 51587 states have internal predecessors, (65319), 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 17:23:12,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51588 states to 51588 states and 65319 transitions. [2021-11-06 17:23:12,400 INFO L78 Accepts]: Start accepts. Automaton has 51588 states and 65319 transitions. Word has length 54 [2021-11-06 17:23:12,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:23:12,401 INFO L470 AbstractCegarLoop]: Abstraction has 51588 states and 65319 transitions. [2021-11-06 17:23:12,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:23:12,401 INFO L276 IsEmpty]: Start isEmpty. Operand 51588 states and 65319 transitions. [2021-11-06 17:23:12,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 17:23:12,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:23:12,417 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 17:23:12,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 17:23:12,417 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 17:23:12,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:23:12,418 INFO L85 PathProgramCache]: Analyzing trace with hash -168317315, now seen corresponding path program 1 times [2021-11-06 17:23:12,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:23:12,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827271387] [2021-11-06 17:23:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:23:12,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:23:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:23:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:23:12,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:23:12,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827271387] [2021-11-06 17:23:12,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827271387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:23:12,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:23:12,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:23:12,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959255987] [2021-11-06 17:23:12,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:23:12,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:23:12,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:23:12,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:23:12,519 INFO L87 Difference]: Start difference. First operand 51588 states and 65319 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 17:23:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:23:14,892 INFO L93 Difference]: Finished difference Result 132222 states and 167446 transitions. [2021-11-06 17:23:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:23:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 17:23:14,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:23:15,069 INFO L225 Difference]: With dead ends: 132222 [2021-11-06 17:23:15,069 INFO L226 Difference]: Without dead ends: 80660 [2021-11-06 17:23:15,137 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 17:23:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80660 states. [2021-11-06 17:23:17,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80660 to 75868. [2021-11-06 17:23:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75868 states, 75856 states have (on average 1.2746124235393377) internal successors, (96687), 75867 states have internal predecessors, (96687), 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 17:23:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75868 states to 75868 states and 96687 transitions. [2021-11-06 17:23:17,719 INFO L78 Accepts]: Start accepts. Automaton has 75868 states and 96687 transitions. Word has length 80 [2021-11-06 17:23:17,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:23:17,720 INFO L470 AbstractCegarLoop]: Abstraction has 75868 states and 96687 transitions. [2021-11-06 17:23:17,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 17:23:17,720 INFO L276 IsEmpty]: Start isEmpty. Operand 75868 states and 96687 transitions. [2021-11-06 17:23:17,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-06 17:23:17,727 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:23:17,727 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:23:17,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 17:23:17,727 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 20 more)] === [2021-11-06 17:23:17,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:23:17,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1447357583, now seen corresponding path program 1 times [2021-11-06 17:23:17,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:23:17,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105804898] [2021-11-06 17:23:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:23:17,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:23:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:23:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 17:23:17,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:23:17,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105804898] [2021-11-06 17:23:17,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105804898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:23:17,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:23:17,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:23:17,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622316299] [2021-11-06 17:23:17,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:23:17,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:23:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:23:17,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:23:17,827 INFO L87 Difference]: Start difference. First operand 75868 states and 96687 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 17:23:22,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:23:22,052 INFO L93 Difference]: Finished difference Result 220848 states and 282133 transitions. [2021-11-06 17:23:22,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:23:22,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 153 [2021-11-06 17:23:22,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:23:22,486 INFO L225 Difference]: With dead ends: 220848 [2021-11-06 17:23:22,486 INFO L226 Difference]: Without dead ends: 145006 [2021-11-06 17:23:22,598 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 17:23:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145006 states.