./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.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-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.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 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 13:58:38,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 13:58:38,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 13:58:38,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 13:58:38,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 13:58:38,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 13:58:38,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 13:58:38,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 13:58:38,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 13:58:38,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 13:58:38,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 13:58:38,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 13:58:38,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 13:58:38,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 13:58:38,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 13:58:38,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 13:58:38,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 13:58:38,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 13:58:38,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 13:58:38,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 13:58:38,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 13:58:38,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 13:58:38,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 13:58:38,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 13:58:38,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 13:58:38,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 13:58:38,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 13:58:38,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 13:58:38,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 13:58:38,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 13:58:38,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 13:58:38,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 13:58:38,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 13:58:38,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 13:58:38,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 13:58:38,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 13:58:38,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 13:58:38,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 13:58:38,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 13:58:38,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 13:58:38,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 13:58:38,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 13:58:38,936 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 13:58:38,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 13:58:38,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 13:58:38,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 13:58:38,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 13:58:38,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 13:58:38,938 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 13:58:38,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 13:58:38,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 13:58:38,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 13:58:38,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 13:58:38,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 13:58:38,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 13:58:38,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 13:58:38,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 13:58:38,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 13:58:38,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 13:58:38,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 13:58:38,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 13:58:38,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:58:38,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 13:58:38,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 13:58:38,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 13:58:38,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 13:58:38,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 13:58:38,942 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 13:58:38,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 13:58:38,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 13:58:38,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 13:58:38,943 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae [2021-11-06 13:58:39,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 13:58:39,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 13:58:39,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 13:58:39,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 13:58:39,187 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 13:58:39,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2021-11-06 13:58:39,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e290e1594/a18fad62c7784255ac18c05a37548a50/FLAG193051100 [2021-11-06 13:58:39,865 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 13:58:39,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2021-11-06 13:58:39,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e290e1594/a18fad62c7784255ac18c05a37548a50/FLAG193051100 [2021-11-06 13:58:40,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e290e1594/a18fad62c7784255ac18c05a37548a50 [2021-11-06 13:58:40,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 13:58:40,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 13:58:40,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 13:58:40,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 13:58:40,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 13:58:40,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:58:40" (1/1) ... [2021-11-06 13:58:40,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de93605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:40, skipping insertion in model container [2021-11-06 13:58:40,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:58:40" (1/1) ... [2021-11-06 13:58:40,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 13:58:40,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 13:58:41,360 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-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2021-11-06 13:58:41,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:58:41,457 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 13:58:41,774 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-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2021-11-06 13:58:41,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:58:41,860 INFO L208 MainTranslator]: Completed translation [2021-11-06 13:58:41,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:41 WrapperNode [2021-11-06 13:58:41,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 13:58:41,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 13:58:41,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 13:58:41,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 13:58:41,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:41" (1/1) ... [2021-11-06 13:58:41,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:41" (1/1) ... [2021-11-06 13:58:43,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 13:58:43,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 13:58:43,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 13:58:43,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 13:58:43,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:41" (1/1) ... [2021-11-06 13:58:43,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:41" (1/1) ... [2021-11-06 13:58:43,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:41" (1/1) ... [2021-11-06 13:58:43,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:41" (1/1) ... [2021-11-06 13:58:44,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:41" (1/1) ... [2021-11-06 13:58:45,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:41" (1/1) ... [2021-11-06 13:58:45,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:41" (1/1) ... [2021-11-06 13:58:45,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 13:58:45,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 13:58:45,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 13:58:45,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 13:58:45,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:41" (1/1) ... [2021-11-06 13:58:45,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:58:45,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:58:45,715 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 13:58:45,735 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 13:58:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-06 13:58:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 13:58:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 13:58:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2021-11-06 13:58:45,753 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2021-11-06 13:58:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 13:58:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 13:58:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 13:58:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 13:58:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 13:58:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 13:58:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 13:58:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 13:58:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2021-11-06 13:58:45,754 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2021-11-06 13:58:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 13:58:45,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 13:58:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 13:58:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 13:58:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 13:58:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 13:58:45,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 13:59:24,323 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 13:59:24,323 INFO L299 CfgBuilder]: Removed 7466 assume(true) statements. [2021-11-06 13:59:24,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:59:24 BoogieIcfgContainer [2021-11-06 13:59:24,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 13:59:24,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 13:59:24,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 13:59:24,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 13:59:24,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 01:58:40" (1/3) ... [2021-11-06 13:59:24,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a1e7dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:59:24, skipping insertion in model container [2021-11-06 13:59:24,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:58:41" (2/3) ... [2021-11-06 13:59:24,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a1e7dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:59:24, skipping insertion in model container [2021-11-06 13:59:24,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:59:24" (3/3) ... [2021-11-06 13:59:24,355 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2021-11-06 13:59:24,360 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 13:59:24,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2021-11-06 13:59:24,428 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 13:59:24,433 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 13:59:24,433 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-11-06 13:59:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 11083 states, 11030 states have (on average 1.4948322756119674) internal successors, (16488), 11051 states have internal predecessors, (16488), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-06 13:59:24,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-06 13:59:24,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:59:24,557 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:59:24,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 13:59:24,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:59:24,563 INFO L85 PathProgramCache]: Analyzing trace with hash -576168751, now seen corresponding path program 1 times [2021-11-06 13:59:24,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:59:24,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830060093] [2021-11-06 13:59:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:59:24,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:59:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:59:25,066 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 13:59:25,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:59:25,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830060093] [2021-11-06 13:59:25,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830060093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:59:25,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:59:25,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 13:59:25,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894704512] [2021-11-06 13:59:25,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:59:25,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:59:25,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:59:25,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:59:25,110 INFO L87 Difference]: Start difference. First operand has 11083 states, 11030 states have (on average 1.4948322756119674) internal successors, (16488), 11051 states have internal predecessors, (16488), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 13:59:25,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:59:25,498 INFO L93 Difference]: Finished difference Result 22162 states and 33116 transitions. [2021-11-06 13:59:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:59:25,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-06 13:59:25,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:59:25,557 INFO L225 Difference]: With dead ends: 22162 [2021-11-06 13:59:25,557 INFO L226 Difference]: Without dead ends: 11079 [2021-11-06 13:59:25,591 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 13:59:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11079 states. [2021-11-06 13:59:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11079 to 11079. [2021-11-06 13:59:26,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11079 states, 11027 states have (on average 1.4746531241498142) internal successors, (16261), 11047 states have internal predecessors, (16261), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-06 13:59:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11079 states to 11079 states and 16319 transitions. [2021-11-06 13:59:26,109 INFO L78 Accepts]: Start accepts. Automaton has 11079 states and 16319 transitions. Word has length 12 [2021-11-06 13:59:26,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:59:26,109 INFO L470 AbstractCegarLoop]: Abstraction has 11079 states and 16319 transitions. [2021-11-06 13:59:26,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 13:59:26,110 INFO L276 IsEmpty]: Start isEmpty. Operand 11079 states and 16319 transitions. [2021-11-06 13:59:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-06 13:59:26,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:59:26,110 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:59:26,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 13:59:26,111 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 13:59:26,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:59:26,118 INFO L85 PathProgramCache]: Analyzing trace with hash 103889619, now seen corresponding path program 1 times [2021-11-06 13:59:26,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:59:26,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476560851] [2021-11-06 13:59:26,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:59:26,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:59:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:59:26,261 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 13:59:26,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:59:26,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476560851] [2021-11-06 13:59:26,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476560851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:59:26,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:59:26,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:59:26,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633756470] [2021-11-06 13:59:26,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:59:26,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:59:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:59:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:59:26,265 INFO L87 Difference]: Start difference. First operand 11079 states and 16319 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 13:59:28,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:59:28,607 INFO L93 Difference]: Finished difference Result 11079 states and 16319 transitions. [2021-11-06 13:59:28,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:59:28,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-11-06 13:59:28,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:59:28,645 INFO L225 Difference]: With dead ends: 11079 [2021-11-06 13:59:28,645 INFO L226 Difference]: Without dead ends: 11077 [2021-11-06 13:59:28,650 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 13:59:28,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11077 states. [2021-11-06 13:59:28,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11077 to 11077. [2021-11-06 13:59:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11077 states, 11026 states have (on average 1.4746054779611826) internal successors, (16259), 11045 states have internal predecessors, (16259), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-06 13:59:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11077 states to 11077 states and 16317 transitions. [2021-11-06 13:59:29,046 INFO L78 Accepts]: Start accepts. Automaton has 11077 states and 16317 transitions. Word has length 12 [2021-11-06 13:59:29,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:59:29,046 INFO L470 AbstractCegarLoop]: Abstraction has 11077 states and 16317 transitions. [2021-11-06 13:59:29,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 13:59:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand 11077 states and 16317 transitions. [2021-11-06 13:59:29,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-06 13:59:29,051 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:59:29,051 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:59:29,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 13:59:29,052 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 13:59:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:59:29,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1074350623, now seen corresponding path program 1 times [2021-11-06 13:59:29,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:59:29,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566611421] [2021-11-06 13:59:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:59:29,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:59:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:59:29,221 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 13:59:29,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:59:29,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566611421] [2021-11-06 13:59:29,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566611421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:59:29,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:59:29,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:59:29,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044124037] [2021-11-06 13:59:29,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:59:29,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:59:29,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:59:29,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:59:29,225 INFO L87 Difference]: Start difference. First operand 11077 states and 16317 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13:59:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:59:31,863 INFO L93 Difference]: Finished difference Result 33119 states and 48813 transitions. [2021-11-06 13:59:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:59:31,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-11-06 13:59:31,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:59:31,933 INFO L225 Difference]: With dead ends: 33119 [2021-11-06 13:59:31,933 INFO L226 Difference]: Without dead ends: 22074 [2021-11-06 13:59:31,966 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 13:59:31,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22074 states. [2021-11-06 13:59:32,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22074 to 22046. [2021-11-06 13:59:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22046 states, 21964 states have (on average 1.4751411400473502) internal successors, (32400), 21983 states have internal predecessors, (32400), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-06 13:59:32,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22046 states to 22046 states and 32516 transitions. [2021-11-06 13:59:32,466 INFO L78 Accepts]: Start accepts. Automaton has 22046 states and 32516 transitions. Word has length 13 [2021-11-06 13:59:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:59:32,467 INFO L470 AbstractCegarLoop]: Abstraction has 22046 states and 32516 transitions. [2021-11-06 13:59:32,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13:59:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 22046 states and 32516 transitions. [2021-11-06 13:59:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-06 13:59:32,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:59:32,468 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:59:32,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 13:59:32,469 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 13:59:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:59:32,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1054907549, now seen corresponding path program 1 times [2021-11-06 13:59:32,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:59:32,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666995228] [2021-11-06 13:59:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:59:32,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:59:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:59:32,600 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 13:59:32,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:59:32,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666995228] [2021-11-06 13:59:32,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666995228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:59:32,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:59:32,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:59:32,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301801624] [2021-11-06 13:59:32,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:59:32,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:59:32,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:59:32,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:59:32,605 INFO L87 Difference]: Start difference. First operand 22046 states and 32516 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 13:59:35,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:59:35,200 INFO L93 Difference]: Finished difference Result 22046 states and 32516 transitions. [2021-11-06 13:59:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:59:35,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-11-06 13:59:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:59:35,244 INFO L225 Difference]: With dead ends: 22046 [2021-11-06 13:59:35,244 INFO L226 Difference]: Without dead ends: 22044 [2021-11-06 13:59:35,253 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 13:59:35,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22044 states. [2021-11-06 13:59:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22044 to 22044. [2021-11-06 13:59:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22044 states, 21963 states have (on average 1.4751172426353412) internal successors, (32398), 21981 states have internal predecessors, (32398), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-06 13:59:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22044 states to 22044 states and 32514 transitions. [2021-11-06 13:59:35,714 INFO L78 Accepts]: Start accepts. Automaton has 22044 states and 32514 transitions. Word has length 14 [2021-11-06 13:59:35,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:59:35,715 INFO L470 AbstractCegarLoop]: Abstraction has 22044 states and 32514 transitions. [2021-11-06 13:59:35,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 13:59:35,715 INFO L276 IsEmpty]: Start isEmpty. Operand 22044 states and 32514 transitions. [2021-11-06 13:59:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-06 13:59:35,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:59:35,716 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:59:35,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 13:59:35,716 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 13:59:35,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:59:35,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1657565845, now seen corresponding path program 1 times [2021-11-06 13:59:35,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:59:35,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199007831] [2021-11-06 13:59:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:59:35,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:59:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:59:35,829 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 13:59:35,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:59:35,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199007831] [2021-11-06 13:59:35,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199007831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:59:35,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:59:35,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:59:35,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134840857] [2021-11-06 13:59:35,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:59:35,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:59:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:59:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:59:35,831 INFO L87 Difference]: Start difference. First operand 22044 states and 32514 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 13:59:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:59:38,394 INFO L93 Difference]: Finished difference Result 22044 states and 32514 transitions. [2021-11-06 13:59:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:59:38,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2021-11-06 13:59:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:59:38,437 INFO L225 Difference]: With dead ends: 22044 [2021-11-06 13:59:38,438 INFO L226 Difference]: Without dead ends: 22020 [2021-11-06 13:59:38,447 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 13:59:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22020 states. [2021-11-06 13:59:38,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22020 to 22020. [2021-11-06 13:59:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22020 states, 21945 states have (on average 1.4747322852586011) internal successors, (32363), 21957 states have internal predecessors, (32363), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-06 13:59:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22020 states to 22020 states and 32479 transitions. [2021-11-06 13:59:38,918 INFO L78 Accepts]: Start accepts. Automaton has 22020 states and 32479 transitions. Word has length 15 [2021-11-06 13:59:38,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:59:38,919 INFO L470 AbstractCegarLoop]: Abstraction has 22020 states and 32479 transitions. [2021-11-06 13:59:38,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 13:59:38,919 INFO L276 IsEmpty]: Start isEmpty. Operand 22020 states and 32479 transitions. [2021-11-06 13:59:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-06 13:59:38,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:59:38,924 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:59:38,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 13:59:38,927 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 13:59:38,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:59:38,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1462807932, now seen corresponding path program 1 times [2021-11-06 13:59:38,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:59:38,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398551865] [2021-11-06 13:59:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:59:38,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:59:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:59:39,105 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 13:59:39,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:59:39,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398551865] [2021-11-06 13:59:39,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398551865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:59:39,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:59:39,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 13:59:39,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629244091] [2021-11-06 13:59:39,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 13:59:39,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:59:39,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 13:59:39,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:59:39,110 INFO L87 Difference]: Start difference. First operand 22020 states and 32479 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 13:59:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:59:40,102 INFO L93 Difference]: Finished difference Result 38803 states and 56946 transitions. [2021-11-06 13:59:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 13:59:40,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2021-11-06 13:59:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:59:40,167 INFO L225 Difference]: With dead ends: 38803 [2021-11-06 13:59:40,168 INFO L226 Difference]: Without dead ends: 33397 [2021-11-06 13:59:40,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 13:59:40,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33397 states. [2021-11-06 13:59:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33397 to 16903. [2021-11-06 13:59:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16903 states, 16840 states have (on average 1.4722684085510689) internal successors, (24793), 16852 states have internal predecessors, (24793), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-06 13:59:40,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16903 states to 16903 states and 24885 transitions. [2021-11-06 13:59:40,718 INFO L78 Accepts]: Start accepts. Automaton has 16903 states and 24885 transitions. Word has length 35 [2021-11-06 13:59:40,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:59:40,718 INFO L470 AbstractCegarLoop]: Abstraction has 16903 states and 24885 transitions. [2021-11-06 13:59:40,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 13:59:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 16903 states and 24885 transitions. [2021-11-06 13:59:40,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-06 13:59:40,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:59:40,720 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] [2021-11-06 13:59:40,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 13:59:40,720 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 13:59:40,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:59:40,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1855834942, now seen corresponding path program 1 times [2021-11-06 13:59:40,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:59:40,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076851195] [2021-11-06 13:59:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:59:40,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:59:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:59:40,977 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 13:59:40,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:59:40,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076851195] [2021-11-06 13:59:40,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076851195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:59:40,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:59:40,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:59:40,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734703084] [2021-11-06 13:59:40,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:59:40,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:59:40,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:59:40,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:59:40,979 INFO L87 Difference]: Start difference. First operand 16903 states and 24885 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 13:59:43,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:59:43,660 INFO L93 Difference]: Finished difference Result 33780 states and 49732 transitions. [2021-11-06 13:59:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:59:43,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 35 [2021-11-06 13:59:43,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:59:43,699 INFO L225 Difference]: With dead ends: 33780 [2021-11-06 13:59:43,699 INFO L226 Difference]: Without dead ends: 16909 [2021-11-06 13:59:43,727 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 13:59:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16909 states. [2021-11-06 13:59:44,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16909 to 16899. [2021-11-06 13:59:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16899 states, 16838 states have (on average 1.47190877776458) internal successors, (24784), 16848 states have internal predecessors, (24784), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-06 13:59:44,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16899 states to 16899 states and 24876 transitions. [2021-11-06 13:59:44,218 INFO L78 Accepts]: Start accepts. Automaton has 16899 states and 24876 transitions. Word has length 35 [2021-11-06 13:59:44,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:59:44,218 INFO L470 AbstractCegarLoop]: Abstraction has 16899 states and 24876 transitions. [2021-11-06 13:59:44,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 13:59:44,218 INFO L276 IsEmpty]: Start isEmpty. Operand 16899 states and 24876 transitions. [2021-11-06 13:59:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-06 13:59:44,222 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:59:44,222 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] [2021-11-06 13:59:44,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 13:59:44,222 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 13:59:44,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:59:44,223 INFO L85 PathProgramCache]: Analyzing trace with hash 84168741, now seen corresponding path program 1 times [2021-11-06 13:59:44,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:59:44,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742575893] [2021-11-06 13:59:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:59:44,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:59:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:59:44,346 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 13:59:44,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:59:44,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742575893] [2021-11-06 13:59:44,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742575893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:59:44,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:59:44,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:59:44,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804856148] [2021-11-06 13:59:44,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:59:44,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:59:44,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:59:44,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:59:44,349 INFO L87 Difference]: Start difference. First operand 16899 states and 24876 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 13:59:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:59:45,075 INFO L93 Difference]: Finished difference Result 42657 states and 62783 transitions. [2021-11-06 13:59:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:59:45,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2021-11-06 13:59:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:59:45,129 INFO L225 Difference]: With dead ends: 42657 [2021-11-06 13:59:45,130 INFO L226 Difference]: Without dead ends: 25790 [2021-11-06 13:59:45,154 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 13:59:45,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25790 states. [2021-11-06 13:59:45,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25790 to 25770. [2021-11-06 13:59:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25770 states, 25693 states have (on average 1.4711789203284942) internal successors, (37799), 25703 states have internal predecessors, (37799), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-06 13:59:45,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25770 states to 25770 states and 37923 transitions. [2021-11-06 13:59:45,840 INFO L78 Accepts]: Start accepts. Automaton has 25770 states and 37923 transitions. Word has length 37 [2021-11-06 13:59:45,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:59:45,840 INFO L470 AbstractCegarLoop]: Abstraction has 25770 states and 37923 transitions. [2021-11-06 13:59:45,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 13:59:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 25770 states and 37923 transitions. [2021-11-06 13:59:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-06 13:59:45,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:59:45,841 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] [2021-11-06 13:59:45,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 13:59:45,842 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 13:59:45,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:59:45,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1675455204, now seen corresponding path program 1 times [2021-11-06 13:59:45,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:59:45,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960655568] [2021-11-06 13:59:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:59:45,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:59:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:59:45,943 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 13:59:45,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:59:45,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960655568] [2021-11-06 13:59:45,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960655568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:59:45,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:59:45,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:59:45,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282747257] [2021-11-06 13:59:45,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:59:45,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:59:45,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:59:45,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:59:45,945 INFO L87 Difference]: Start difference. First operand 25770 states and 37923 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 13:59:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:59:47,044 INFO L93 Difference]: Finished difference Result 75730 states and 111574 transitions. [2021-11-06 13:59:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:59:47,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2021-11-06 13:59:47,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:59:47,151 INFO L225 Difference]: With dead ends: 75730 [2021-11-06 13:59:47,152 INFO L226 Difference]: Without dead ends: 49992 [2021-11-06 13:59:47,201 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 13:59:47,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49992 states. [2021-11-06 13:59:48,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49992 to 47153. [2021-11-06 13:59:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47153 states, 47031 states have (on average 1.472900852629117) internal successors, (69272), 47041 states have internal predecessors, (69272), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-06 13:59:48,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47153 states to 47153 states and 69486 transitions. [2021-11-06 13:59:48,618 INFO L78 Accepts]: Start accepts. Automaton has 47153 states and 69486 transitions. Word has length 38 [2021-11-06 13:59:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:59:48,623 INFO L470 AbstractCegarLoop]: Abstraction has 47153 states and 69486 transitions. [2021-11-06 13:59:48,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 13:59:48,623 INFO L276 IsEmpty]: Start isEmpty. Operand 47153 states and 69486 transitions. [2021-11-06 13:59:48,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 13:59:48,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:59:48,624 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] [2021-11-06 13:59:48,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 13:59:48,625 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 13:59:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:59:48,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1335611205, now seen corresponding path program 1 times [2021-11-06 13:59:48,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:59:48,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936432796] [2021-11-06 13:59:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:59:48,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:59:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:59:48,801 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 13:59:48,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:59:48,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936432796] [2021-11-06 13:59:48,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936432796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:59:48,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:59:48,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:59:48,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131061672] [2021-11-06 13:59:48,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:59:48,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:59:48,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:59:48,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:59:48,804 INFO L87 Difference]: Start difference. First operand 47153 states and 69486 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 13:59:51,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:59:51,969 INFO L93 Difference]: Finished difference Result 47153 states and 69486 transitions. [2021-11-06 13:59:51,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:59:51,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-11-06 13:59:51,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:59:52,187 INFO L225 Difference]: With dead ends: 47153 [2021-11-06 13:59:52,187 INFO L226 Difference]: Without dead ends: 47143 [2021-11-06 13:59:52,204 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 13:59:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47143 states. [2021-11-06 13:59:53,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47143 to 47143. [2021-11-06 13:59:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47143 states, 47026 states have (on average 1.4725258367711478) internal successors, (69247), 47031 states have internal predecessors, (69247), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-06 13:59:53,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47143 states to 47143 states and 69461 transitions. [2021-11-06 13:59:53,471 INFO L78 Accepts]: Start accepts. Automaton has 47143 states and 69461 transitions. Word has length 39 [2021-11-06 13:59:53,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:59:53,472 INFO L470 AbstractCegarLoop]: Abstraction has 47143 states and 69461 transitions. [2021-11-06 13:59:53,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 13:59:53,472 INFO L276 IsEmpty]: Start isEmpty. Operand 47143 states and 69461 transitions. [2021-11-06 13:59:53,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 13:59:53,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:59:53,475 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] [2021-11-06 13:59:53,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 13:59:53,476 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 13:59:53,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:59:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1117073061, now seen corresponding path program 1 times [2021-11-06 13:59:53,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:59:53,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450398234] [2021-11-06 13:59:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:59:53,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:59:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:59:53,804 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 13:59:53,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:59:53,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450398234] [2021-11-06 13:59:53,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450398234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:59:53,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:59:53,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 13:59:53,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149519659] [2021-11-06 13:59:53,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 13:59:53,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:59:53,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 13:59:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:59:53,807 INFO L87 Difference]: Start difference. First operand 47143 states and 69461 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 13:59:56,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:59:56,305 INFO L93 Difference]: Finished difference Result 99424 states and 145784 transitions. [2021-11-06 13:59:56,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 13:59:56,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 13:59:56,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:59:56,492 INFO L225 Difference]: With dead ends: 99424 [2021-11-06 13:59:56,492 INFO L226 Difference]: Without dead ends: 90392 [2021-11-06 13:59:56,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 13:59:56,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90392 states. [2021-11-06 13:59:58,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90392 to 47139. [2021-11-06 13:59:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47139 states, 47022 states have (on average 1.4724809663561738) internal successors, (69239), 47027 states have internal predecessors, (69239), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-06 13:59:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47139 states to 47139 states and 69453 transitions. [2021-11-06 13:59:58,314 INFO L78 Accepts]: Start accepts. Automaton has 47139 states and 69453 transitions. Word has length 43 [2021-11-06 13:59:58,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:59:58,314 INFO L470 AbstractCegarLoop]: Abstraction has 47139 states and 69453 transitions. [2021-11-06 13:59:58,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 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 13:59:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 47139 states and 69453 transitions. [2021-11-06 13:59:58,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 13:59:58,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:59:58,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:59:58,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 13:59:58,326 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 13:59:58,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:59:58,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2077007777, now seen corresponding path program 1 times [2021-11-06 13:59:58,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:59:58,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160072935] [2021-11-06 13:59:58,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:59:58,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:59:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:59:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:59:58,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:59:58,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160072935] [2021-11-06 13:59:58,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160072935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:59:58,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:59:58,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:59:58,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160661725] [2021-11-06 13:59:58,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:59:58,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:59:58,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:59:58,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:59:58,587 INFO L87 Difference]: Start difference. First operand 47139 states and 69453 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 13:59:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:59:59,824 INFO L93 Difference]: Finished difference Result 94266 states and 138886 transitions. [2021-11-06 13:59:59,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 13:59:59,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2021-11-06 13:59:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:59:59,937 INFO L225 Difference]: With dead ends: 94266 [2021-11-06 13:59:59,937 INFO L226 Difference]: Without dead ends: 47097 [2021-11-06 14:00:00,013 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:00:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47097 states. [2021-11-06 14:00:01,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47097 to 47054. [2021-11-06 14:00:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47054 states, 46937 states have (on average 1.4729957176641029) internal successors, (69138), 46942 states have internal predecessors, (69138), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-06 14:00:01,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47054 states to 47054 states and 69352 transitions. [2021-11-06 14:00:01,649 INFO L78 Accepts]: Start accepts. Automaton has 47054 states and 69352 transitions. Word has length 72 [2021-11-06 14:00:01,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:01,650 INFO L470 AbstractCegarLoop]: Abstraction has 47054 states and 69352 transitions. [2021-11-06 14:00:01,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 14:00:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 47054 states and 69352 transitions. [2021-11-06 14:00:01,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 14:00:01,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:01,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:01,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 14:00:01,672 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-06 14:00:01,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:01,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1468839328, now seen corresponding path program 1 times [2021-11-06 14:00:01,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:01,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150930969] [2021-11-06 14:00:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:01,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:00:01,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:01,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150930969] [2021-11-06 14:00:01,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150930969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:01,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:01,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:00:01,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745995771] [2021-11-06 14:00:01,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:00:01,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:01,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:00:01,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:00:01,995 INFO L87 Difference]: Start difference. First operand 47054 states and 69352 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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)