./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--wireless--prism54--prism54.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--wireless--prism54--prism54.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 039eab12e50993f4fa37adc6de2fecb3561458fa83d70d097739d1ded7d4af34 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:37:27,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:37:27,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:37:27,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:37:27,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:37:27,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:37:27,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:37:27,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:37:27,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:37:27,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:37:27,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:37:27,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:37:27,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:37:27,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:37:27,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:37:27,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:37:27,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:37:27,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:37:27,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:37:27,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:37:27,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:37:27,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:37:27,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:37:27,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:37:27,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:37:27,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:37:27,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:37:27,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:37:27,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:37:27,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:37:27,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:37:27,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:37:27,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:37:27,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:37:27,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:37:27,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:37:27,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:37:27,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:37:27,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:37:27,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:37:27,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:37:27,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:37:27,891 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:37:27,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:37:27,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:37:27,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:37:27,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:37:27,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:37:27,894 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:37:27,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:37:27,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:37:27,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:37:27,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:37:27,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:37:27,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:37:27,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:37:27,895 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:37:27,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:37:27,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:37:27,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:37:27,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:37:27,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:37:27,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:37:27,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:37:27,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:37:27,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:37:27,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:37:27,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:37:27,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:37:27,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:37:27,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:37:27,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039eab12e50993f4fa37adc6de2fecb3561458fa83d70d097739d1ded7d4af34 [2021-11-06 17:37:28,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:37:28,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:37:28,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:37:28,120 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:37:28,121 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:37:28,122 INFO L432 ainManager$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--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-06 17:37:28,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ad4b53b/fc6e95073b8c4282958969bfa5b61f43/FLAG6b62c7be8 [2021-11-06 17:37:28,949 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:37:28,949 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--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-06 17:37:28,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ad4b53b/fc6e95073b8c4282958969bfa5b61f43/FLAG6b62c7be8 [2021-11-06 17:37:29,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ad4b53b/fc6e95073b8c4282958969bfa5b61f43 [2021-11-06 17:37:29,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:37:29,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:37:29,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:37:29,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:37:29,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:37:29,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:37:29" (1/1) ... [2021-11-06 17:37:29,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce36ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:29, skipping insertion in model container [2021-11-06 17:37:29,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:37:29" (1/1) ... [2021-11-06 17:37:29,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:37:29,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:37:32,081 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--wireless--prism54--prism54.ko-entry_point.cil.out.i[485718,485731] [2021-11-06 17:37:32,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:37:32,247 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:37:32,604 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--wireless--prism54--prism54.ko-entry_point.cil.out.i[485718,485731] [2021-11-06 17:37:32,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:37:32,774 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:37:32,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:32 WrapperNode [2021-11-06 17:37:32,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:37:32,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:37:32,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:37:32,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:37:32,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:32" (1/1) ... [2021-11-06 17:37:32,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:32" (1/1) ... [2021-11-06 17:37:33,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:37:33,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:37:33,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:37:33,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:37:33,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:32" (1/1) ... [2021-11-06 17:37:33,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:32" (1/1) ... [2021-11-06 17:37:34,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:32" (1/1) ... [2021-11-06 17:37:34,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:32" (1/1) ... [2021-11-06 17:37:34,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:32" (1/1) ... [2021-11-06 17:37:34,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:32" (1/1) ... [2021-11-06 17:37:34,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:32" (1/1) ... [2021-11-06 17:37:35,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:37:35,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:37:35,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:37:35,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:37:35,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:32" (1/1) ... [2021-11-06 17:37:35,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:37:35,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:37:35,139 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 17:37:35,157 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 17:37:35,182 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-06 17:37:35,183 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-06 17:37:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 17:37:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-06 17:37:35,183 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-06 17:37:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:37:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:37:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:37:35,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:37:35,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:37:35,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-06 17:37:35,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:37:35,184 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 17:37:35,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:37:35,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:37:35,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:37:35,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:37:35,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:37:35,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:37:35,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:37:35,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:37:35,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:38:01,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:38:01,398 INFO L299 CfgBuilder]: Removed 7570 assume(true) statements. [2021-11-06 17:38:01,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:38:01 BoogieIcfgContainer [2021-11-06 17:38:01,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:38:01,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:38:01,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:38:01,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:38:01,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:37:29" (1/3) ... [2021-11-06 17:38:01,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424fba12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:38:01, skipping insertion in model container [2021-11-06 17:38:01,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:37:32" (2/3) ... [2021-11-06 17:38:01,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424fba12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:38:01, skipping insertion in model container [2021-11-06 17:38:01,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:38:01" (3/3) ... [2021-11-06 17:38:01,411 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-06 17:38:01,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:38:01,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2021-11-06 17:38:01,479 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:38:01,484 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 17:38:01,484 INFO L340 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2021-11-06 17:38:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 8185 states, 8122 states have (on average 1.3697365180989904) internal successors, (11125), 8162 states have internal predecessors, (11125), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-06 17:38:01,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 17:38:01,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:38:01,603 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 17:38:01,604 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-06 17:38:01,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:38:01,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1238528597, now seen corresponding path program 1 times [2021-11-06 17:38:01,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:38:01,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022246604] [2021-11-06 17:38:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:38:01,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:38:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:38:02,260 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 17:38:02,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:38:02,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022246604] [2021-11-06 17:38:02,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022246604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:38:02,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:38:02,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:38:02,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273971626] [2021-11-06 17:38:02,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:38:02,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:38:02,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:38:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:38:02,291 INFO L87 Difference]: Start difference. First operand has 8185 states, 8122 states have (on average 1.3697365180989904) internal successors, (11125), 8162 states have internal predecessors, (11125), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 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 17:38:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:38:02,501 INFO L93 Difference]: Finished difference Result 16366 states and 22325 transitions. [2021-11-06 17:38:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:38:02,503 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 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 17:38:02,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:38:02,544 INFO L225 Difference]: With dead ends: 16366 [2021-11-06 17:38:02,545 INFO L226 Difference]: Without dead ends: 7639 [2021-11-06 17:38:02,564 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 17:38:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7639 states. [2021-11-06 17:38:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7639 to 7639. [2021-11-06 17:38:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7639 states, 7577 states have (on average 1.3079055034974265) internal successors, (9910), 7616 states have internal predecessors, (9910), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-06 17:38:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7639 states to 7639 states and 9950 transitions. [2021-11-06 17:38:02,768 INFO L78 Accepts]: Start accepts. Automaton has 7639 states and 9950 transitions. Word has length 46 [2021-11-06 17:38:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:38:02,769 INFO L470 AbstractCegarLoop]: Abstraction has 7639 states and 9950 transitions. [2021-11-06 17:38:02,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 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 17:38:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 7639 states and 9950 transitions. [2021-11-06 17:38:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 17:38:02,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:38:02,772 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 17:38:02,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:38:02,773 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-06 17:38:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:38:02,773 INFO L85 PathProgramCache]: Analyzing trace with hash 481683929, now seen corresponding path program 1 times [2021-11-06 17:38:02,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:38:02,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441507219] [2021-11-06 17:38:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:38:02,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:38:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:38:03,209 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 17:38:03,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:38:03,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441507219] [2021-11-06 17:38:03,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441507219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:38:03,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:38:03,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:38:03,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068466061] [2021-11-06 17:38:03,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:38:03,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:38:03,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:38:03,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:38:03,212 INFO L87 Difference]: Start difference. First operand 7639 states and 9950 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) 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 17:38:03,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:38:03,681 INFO L93 Difference]: Finished difference Result 20778 states and 27041 transitions. [2021-11-06 17:38:03,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:38:03,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) 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 17:38:03,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:38:03,726 INFO L225 Difference]: With dead ends: 20778 [2021-11-06 17:38:03,727 INFO L226 Difference]: Without dead ends: 13152 [2021-11-06 17:38:03,741 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 17:38:03,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13152 states. [2021-11-06 17:38:04,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13152 to 12873. [2021-11-06 17:38:04,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12873 states, 12797 states have (on average 1.3070250840040634) internal successors, (16726), 12837 states have internal predecessors, (16726), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-06 17:38:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12873 states to 12873 states and 16792 transitions. [2021-11-06 17:38:04,252 INFO L78 Accepts]: Start accepts. Automaton has 12873 states and 16792 transitions. Word has length 46 [2021-11-06 17:38:04,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:38:04,253 INFO L470 AbstractCegarLoop]: Abstraction has 12873 states and 16792 transitions. [2021-11-06 17:38:04,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) 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 17:38:04,254 INFO L276 IsEmpty]: Start isEmpty. Operand 12873 states and 16792 transitions. [2021-11-06 17:38:04,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 17:38:04,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:38:04,259 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] [2021-11-06 17:38:04,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:38:04,260 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-06 17:38:04,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:38:04,260 INFO L85 PathProgramCache]: Analyzing trace with hash 9914257, now seen corresponding path program 1 times [2021-11-06 17:38:04,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:38:04,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787494059] [2021-11-06 17:38:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:38:04,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:38:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:38:04,566 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 17:38:04,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:38:04,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787494059] [2021-11-06 17:38:04,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787494059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:38:04,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:38:04,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:38:04,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997264847] [2021-11-06 17:38:04,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:38:04,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:38:04,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:38:04,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:38:04,569 INFO L87 Difference]: Start difference. First operand 12873 states and 16792 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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 17:38:05,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:38:05,400 INFO L93 Difference]: Finished difference Result 53589 states and 70044 transitions. [2021-11-06 17:38:05,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:38:05,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-06 17:38:05,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:38:05,483 INFO L225 Difference]: With dead ends: 53589 [2021-11-06 17:38:05,483 INFO L226 Difference]: Without dead ends: 40729 [2021-11-06 17:38:05,507 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 17:38:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40729 states. [2021-11-06 17:38:06,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40729 to 20977. [2021-11-06 17:38:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20977 states, 20865 states have (on average 1.3104241552839684) internal successors, (27342), 20906 states have internal predecessors, (27342), 66 states have call successors, (66), 6 states have call predecessors, (66), 6 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-06 17:38:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20977 states to 20977 states and 27474 transitions. [2021-11-06 17:38:06,159 INFO L78 Accepts]: Start accepts. Automaton has 20977 states and 27474 transitions. Word has length 67 [2021-11-06 17:38:06,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:38:06,160 INFO L470 AbstractCegarLoop]: Abstraction has 20977 states and 27474 transitions. [2021-11-06 17:38:06,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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 17:38:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 20977 states and 27474 transitions. [2021-11-06 17:38:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 17:38:06,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:38:06,166 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] [2021-11-06 17:38:06,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:38:06,166 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-06 17:38:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:38:06,167 INFO L85 PathProgramCache]: Analyzing trace with hash 410844078, now seen corresponding path program 1 times [2021-11-06 17:38:06,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:38:06,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171932335] [2021-11-06 17:38:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:38:06,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:38:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:38:06,473 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 17:38:06,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:38:06,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171932335] [2021-11-06 17:38:06,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171932335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:38:06,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:38:06,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:38:06,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050583444] [2021-11-06 17:38:06,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:38:06,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:38:06,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:38:06,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:38:06,476 INFO L87 Difference]: Start difference. First operand 20977 states and 27474 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 17:38:08,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:38:08,012 INFO L93 Difference]: Finished difference Result 93947 states and 123212 transitions. [2021-11-06 17:38:08,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:38:08,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-06 17:38:08,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:38:08,177 INFO L225 Difference]: With dead ends: 93947 [2021-11-06 17:38:08,178 INFO L226 Difference]: Without dead ends: 72983 [2021-11-06 17:38:08,223 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 17:38:08,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72983 states. [2021-11-06 17:38:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72983 to 40695. [2021-11-06 17:38:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40695 states, 40511 states have (on average 1.3109525807805287) internal successors, (53108), 40554 states have internal predecessors, (53108), 132 states have call successors, (132), 12 states have call predecessors, (132), 12 states have return successors, (132), 128 states have call predecessors, (132), 132 states have call successors, (132) [2021-11-06 17:38:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40695 states to 40695 states and 53372 transitions. [2021-11-06 17:38:09,283 INFO L78 Accepts]: Start accepts. Automaton has 40695 states and 53372 transitions. Word has length 68 [2021-11-06 17:38:09,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:38:09,284 INFO L470 AbstractCegarLoop]: Abstraction has 40695 states and 53372 transitions. [2021-11-06 17:38:09,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 17:38:09,285 INFO L276 IsEmpty]: Start isEmpty. Operand 40695 states and 53372 transitions. [2021-11-06 17:38:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 17:38:09,290 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:38:09,291 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] [2021-11-06 17:38:09,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:38:09,291 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-06 17:38:09,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:38:09,291 INFO L85 PathProgramCache]: Analyzing trace with hash -45231279, now seen corresponding path program 1 times [2021-11-06 17:38:09,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:38:09,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351332685] [2021-11-06 17:38:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:38:09,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:38:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:38:09,589 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 17:38:09,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:38:09,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351332685] [2021-11-06 17:38:09,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351332685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:38:09,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:38:09,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:38:09,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066796570] [2021-11-06 17:38:09,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:38:09,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:38:09,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:38:09,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:38:09,592 INFO L87 Difference]: Start difference. First operand 40695 states and 53372 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:38:12,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:38:12,037 INFO L93 Difference]: Finished difference Result 184051 states and 241660 transitions. [2021-11-06 17:38:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:38:12,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 17:38:12,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:38:12,541 INFO L225 Difference]: With dead ends: 184051 [2021-11-06 17:38:12,542 INFO L226 Difference]: Without dead ends: 143369 [2021-11-06 17:38:12,618 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 17:38:12,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143369 states. [2021-11-06 17:38:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143369 to 78971. [2021-11-06 17:38:14,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78971 states, 78643 states have (on average 1.3113945297102094) internal successors, (103132), 78690 states have internal predecessors, (103132), 264 states have call successors, (264), 24 states have call predecessors, (264), 24 states have return successors, (264), 256 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-06 17:38:15,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78971 states to 78971 states and 103660 transitions. [2021-11-06 17:38:15,215 INFO L78 Accepts]: Start accepts. Automaton has 78971 states and 103660 transitions. Word has length 69 [2021-11-06 17:38:15,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:38:15,216 INFO L470 AbstractCegarLoop]: Abstraction has 78971 states and 103660 transitions. [2021-11-06 17:38:15,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:38:15,216 INFO L276 IsEmpty]: Start isEmpty. Operand 78971 states and 103660 transitions. [2021-11-06 17:38:15,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 17:38:15,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:38:15,220 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] [2021-11-06 17:38:15,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:38:15,221 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-06 17:38:15,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:38:15,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1298663378, now seen corresponding path program 1 times [2021-11-06 17:38:15,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:38:15,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473730911] [2021-11-06 17:38:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:38:15,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:38:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:38:15,498 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 17:38:15,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:38:15,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473730911] [2021-11-06 17:38:15,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473730911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:38:15,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:38:15,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:38:15,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940822781] [2021-11-06 17:38:15,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:38:15,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:38:15,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:38:15,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:38:15,505 INFO L87 Difference]: Start difference. First operand 78971 states and 103660 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 17:38:21,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:38:21,109 INFO L93 Difference]: Finished difference Result 360771 states and 474008 transitions. [2021-11-06 17:38:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:38:21,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2021-11-06 17:38:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:38:21,989 INFO L225 Difference]: With dead ends: 360771 [2021-11-06 17:38:21,990 INFO L226 Difference]: Without dead ends: 281813 [2021-11-06 17:38:22,154 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 17:38:22,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281813 states. [2021-11-06 17:38:26,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281813 to 153201. [2021-11-06 17:38:26,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153201 states, 152585 states have (on average 1.3117934266146738) internal successors, (200160), 152640 states have internal predecessors, (200160), 528 states have call successors, (528), 48 states have call predecessors, (528), 48 states have return successors, (528), 512 states have call predecessors, (528), 528 states have call successors, (528) [2021-11-06 17:38:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153201 states to 153201 states and 201216 transitions. [2021-11-06 17:38:26,964 INFO L78 Accepts]: Start accepts. Automaton has 153201 states and 201216 transitions. Word has length 70 [2021-11-06 17:38:26,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:38:26,965 INFO L470 AbstractCegarLoop]: Abstraction has 153201 states and 201216 transitions. [2021-11-06 17:38:26,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 17:38:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand 153201 states and 201216 transitions. [2021-11-06 17:38:26,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 17:38:26,970 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:38:26,970 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:38:26,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:38:26,971 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-06 17:38:26,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:38:26,971 INFO L85 PathProgramCache]: Analyzing trace with hash -43585181, now seen corresponding path program 1 times [2021-11-06 17:38:26,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:38:26,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226412844] [2021-11-06 17:38:26,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:38:26,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:38:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:38:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 17:38:27,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:38:27,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226412844] [2021-11-06 17:38:27,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226412844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:38:27,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:38:27,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:38:27,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135478034] [2021-11-06 17:38:27,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:38:27,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:38:27,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:38:27,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:38:27,615 INFO L87 Difference]: Start difference. First operand 153201 states and 201216 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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)