./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a49fa2cb2318ea112688f7105056cfdc1f55c42e8f926c44139a3fa1f7774bac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 23:25:06,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:25:06,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:25:06,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:25:06,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:25:06,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:25:06,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:25:06,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:25:06,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:25:06,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:25:06,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:25:06,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:25:06,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:25:06,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:25:06,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:25:06,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:25:06,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:25:06,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:25:06,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:25:06,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:25:06,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:25:06,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:25:06,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:25:06,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:25:06,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:25:06,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:25:06,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:25:06,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:25:06,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:25:06,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:25:06,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:25:06,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:25:06,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:25:06,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:25:06,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:25:06,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:25:06,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:25:06,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:25:06,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:25:06,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:25:06,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:25:06,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 23:25:06,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:25:06,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:25:06,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 23:25:06,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 23:25:06,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:25:06,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:25:06,910 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 23:25:06,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:25:06,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:25:06,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:25:06,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:25:06,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:25:06,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:25:06,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:25:06,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:25:06,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:25:06,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:25:06,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 23:25:06,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 23:25:06,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:25:06,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:25:06,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:25:06,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:25:06,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 23:25:06,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:25:06,913 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 23:25:06,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 23:25:06,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:25:06,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 23:25:06,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa2cb2318ea112688f7105056cfdc1f55c42e8f926c44139a3fa1f7774bac [2021-11-22 23:25:07,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:25:07,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:25:07,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:25:07,126 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:25:07,127 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:25:07,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-22 23:25:07,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3436bb55/2ac908f890a84629958631bfeff6db52/FLAG81d4dfa78 [2021-11-22 23:25:07,997 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:25:07,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-22 23:25:08,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3436bb55/2ac908f890a84629958631bfeff6db52/FLAG81d4dfa78 [2021-11-22 23:25:08,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3436bb55/2ac908f890a84629958631bfeff6db52 [2021-11-22 23:25:08,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:25:08,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:25:08,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:25:08,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:25:08,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:25:08,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:25:08" (1/1) ... [2021-11-22 23:25:08,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347393b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:08, skipping insertion in model container [2021-11-22 23:25:08,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:25:08" (1/1) ... [2021-11-22 23:25:08,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:25:08,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:25:09,426 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[174455,174468] [2021-11-22 23:25:10,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:25:10,955 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:25:11,043 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[174455,174468] [2021-11-22 23:25:11,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:25:11,430 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:25:11,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:11 WrapperNode [2021-11-22 23:25:11,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:25:11,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:25:11,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:25:11,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:25:11,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:11" (1/1) ... [2021-11-22 23:25:11,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:11" (1/1) ... [2021-11-22 23:25:12,240 INFO L137 Inliner]: procedures = 436, calls = 5982, calls flagged for inlining = 1017, calls inlined = 2832, statements flattened = 37425 [2021-11-22 23:25:12,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:25:12,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:25:12,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:25:12,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:25:12,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:11" (1/1) ... [2021-11-22 23:25:12,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:11" (1/1) ... [2021-11-22 23:25:12,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:11" (1/1) ... [2021-11-22 23:25:12,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:11" (1/1) ... [2021-11-22 23:25:12,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:11" (1/1) ... [2021-11-22 23:25:12,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:11" (1/1) ... [2021-11-22 23:25:12,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:11" (1/1) ... [2021-11-22 23:25:13,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:25:13,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:25:13,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:25:13,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:25:13,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:11" (1/1) ... [2021-11-22 23:25:13,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:25:13,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 23:25:13,300 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) [2021-11-22 23:25:13,319 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 [2021-11-22 23:25:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-22 23:25:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-22 23:25:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-22 23:25:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-22 23:25:13,343 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-22 23:25:13,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 23:25:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 23:25:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 23:25:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 23:25:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 23:25:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:25:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 23:25:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-22 23:25:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:25:13,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:25:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 23:25:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 23:25:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 23:25:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 23:25:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 23:25:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 23:25:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:25:14,010 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:25:14,011 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:25:28,144 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:25:28,169 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:25:28,170 INFO L301 CfgBuilder]: Removed 29 assume(true) statements. [2021-11-22 23:25:28,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:25:28 BoogieIcfgContainer [2021-11-22 23:25:28,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:25:28,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 23:25:28,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 23:25:28,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 23:25:28,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:25:08" (1/3) ... [2021-11-22 23:25:28,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451c6ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:25:28, skipping insertion in model container [2021-11-22 23:25:28,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:25:11" (2/3) ... [2021-11-22 23:25:28,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451c6ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:25:28, skipping insertion in model container [2021-11-22 23:25:28,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:25:28" (3/3) ... [2021-11-22 23:25:28,183 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-22 23:25:28,190 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 23:25:28,191 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 23:25:28,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 23:25:28,243 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 [2021-11-22 23:25:28,243 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 23:25:28,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 6653 states, 6629 states have (on average 1.3561623170915673) internal successors, (8990), 6630 states have internal predecessors, (8990), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-22 23:25:28,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 23:25:28,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:25:28,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:25:28,333 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:25:28,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:25:28,339 INFO L85 PathProgramCache]: Analyzing trace with hash -10138996, now seen corresponding path program 1 times [2021-11-22 23:25:28,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:25:28,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758056347] [2021-11-22 23:25:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:25:28,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:25:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:25:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:25:29,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:25:29,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758056347] [2021-11-22 23:25:29,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758056347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:25:29,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:25:29,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:25:29,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023244729] [2021-11-22 23:25:29,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:25:29,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:25:29,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:25:29,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:25:29,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:25:29,185 INFO L87 Difference]: Start difference. First operand has 6653 states, 6629 states have (on average 1.3561623170915673) internal successors, (8990), 6630 states have internal predecessors, (8990), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-11-22 23:25:29,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:25:29,774 INFO L93 Difference]: Finished difference Result 19920 states and 27043 transitions. [2021-11-22 23:25:29,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:25:29,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-11-22 23:25:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:25:29,825 INFO L225 Difference]: With dead ends: 19920 [2021-11-22 23:25:29,826 INFO L226 Difference]: Without dead ends: 12352 [2021-11-22 23:25:29,845 INFO L932 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 [2021-11-22 23:25:29,848 INFO L933 BasicCegarLoop]: 8928 mSDtfsCounter, 8870 mSDsluCounter, 8896 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8870 SdHoareTripleChecker+Valid, 17824 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 23:25:29,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8870 Valid, 17824 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 23:25:29,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12352 states. [2021-11-22 23:25:30,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12352 to 12352. [2021-11-22 23:25:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12352 states, 12307 states have (on average 1.295197854879337) internal successors, (15940), 12307 states have internal predecessors, (15940), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-22 23:25:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12352 states to 12352 states and 16020 transitions. [2021-11-22 23:25:30,193 INFO L78 Accepts]: Start accepts. Automaton has 12352 states and 16020 transitions. Word has length 21 [2021-11-22 23:25:30,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:25:30,194 INFO L470 AbstractCegarLoop]: Abstraction has 12352 states and 16020 transitions. [2021-11-22 23:25:30,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-11-22 23:25:30,195 INFO L276 IsEmpty]: Start isEmpty. Operand 12352 states and 16020 transitions. [2021-11-22 23:25:30,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 23:25:30,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:25:30,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:25:30,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 23:25:30,202 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:25:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:25:30,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1137426606, now seen corresponding path program 1 times [2021-11-22 23:25:30,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:25:30,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883089212] [2021-11-22 23:25:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:25:30,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:25:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:25:30,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:25:30,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:25:30,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883089212] [2021-11-22 23:25:30,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883089212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:25:30,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:25:30,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 23:25:30,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91962718] [2021-11-22 23:25:30,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:25:30,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 23:25:30,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:25:30,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 23:25:30,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:25:30,569 INFO L87 Difference]: Start difference. First operand 12352 states and 16020 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-22 23:25:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:25:31,317 INFO L93 Difference]: Finished difference Result 37032 states and 48033 transitions. [2021-11-22 23:25:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 23:25:31,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2021-11-22 23:25:31,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:25:31,388 INFO L225 Difference]: With dead ends: 37032 [2021-11-22 23:25:31,389 INFO L226 Difference]: Without dead ends: 24686 [2021-11-22 23:25:31,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 23:25:31,419 INFO L933 BasicCegarLoop]: 7983 mSDtfsCounter, 7985 mSDsluCounter, 23904 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7985 SdHoareTripleChecker+Valid, 31887 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 23:25:31,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7985 Valid, 31887 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 23:25:31,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24686 states. [2021-11-22 23:25:32,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24686 to 24606. [2021-11-22 23:25:32,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24606 states, 24517 states have (on average 1.2948566300934046) internal successors, (31746), 24517 states have internal predecessors, (31746), 80 states have call successors, (80), 8 states have call predecessors, (80), 8 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-22 23:25:32,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24606 states to 24606 states and 31906 transitions. [2021-11-22 23:25:32,194 INFO L78 Accepts]: Start accepts. Automaton has 24606 states and 31906 transitions. Word has length 25 [2021-11-22 23:25:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:25:32,195 INFO L470 AbstractCegarLoop]: Abstraction has 24606 states and 31906 transitions. [2021-11-22 23:25:32,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-22 23:25:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 24606 states and 31906 transitions. [2021-11-22 23:25:32,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-22 23:25:32,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:25:32,207 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 23:25:32,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 23:25:32,207 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:25:32,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:25:32,208 INFO L85 PathProgramCache]: Analyzing trace with hash -867269861, now seen corresponding path program 1 times [2021-11-22 23:25:32,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:25:32,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622826207] [2021-11-22 23:25:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:25:32,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:25:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:25:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:25:32,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:25:32,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622826207] [2021-11-22 23:25:32,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622826207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:25:32,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:25:32,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:25:32,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780825364] [2021-11-22 23:25:32,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:25:32,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:25:32,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:25:32,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:25:32,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:25:32,557 INFO L87 Difference]: Start difference. First operand 24606 states and 31906 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-11-22 23:25:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:25:33,229 INFO L93 Difference]: Finished difference Result 65244 states and 84528 transitions. [2021-11-22 23:25:33,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:25:33,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-22 23:25:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:25:33,311 INFO L225 Difference]: With dead ends: 65244 [2021-11-22 23:25:33,312 INFO L226 Difference]: Without dead ends: 40649 [2021-11-22 23:25:33,357 INFO L932 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 [2021-11-22 23:25:33,360 INFO L933 BasicCegarLoop]: 8040 mSDtfsCounter, 5704 mSDsluCounter, 7462 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5704 SdHoareTripleChecker+Valid, 15502 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:25:33,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5704 Valid, 15502 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:25:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40649 states. [2021-11-22 23:25:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40649 to 39890. [2021-11-22 23:25:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39890 states, 39745 states have (on average 1.293017989684237) internal successors, (51391), 39749 states have internal predecessors, (51391), 132 states have call successors, (132), 12 states have call predecessors, (132), 12 states have return successors, (132), 128 states have call predecessors, (132), 132 states have call successors, (132) [2021-11-22 23:25:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39890 states to 39890 states and 51655 transitions. [2021-11-22 23:25:34,296 INFO L78 Accepts]: Start accepts. Automaton has 39890 states and 51655 transitions. Word has length 71 [2021-11-22 23:25:34,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:25:34,296 INFO L470 AbstractCegarLoop]: Abstraction has 39890 states and 51655 transitions. [2021-11-22 23:25:34,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-11-22 23:25:34,297 INFO L276 IsEmpty]: Start isEmpty. Operand 39890 states and 51655 transitions. [2021-11-22 23:25:34,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 23:25:34,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:25:34,308 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 23:25:34,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 23:25:34,309 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:25:34,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:25:34,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1546766615, now seen corresponding path program 1 times [2021-11-22 23:25:34,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:25:34,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787211790] [2021-11-22 23:25:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:25:34,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:25:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:25:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 23:25:34,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:25:34,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787211790] [2021-11-22 23:25:34,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787211790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:25:34,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:25:34,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:25:34,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927130964] [2021-11-22 23:25:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:25:34,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:25:34,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:25:34,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:25:34,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:25:34,588 INFO L87 Difference]: Start difference. First operand 39890 states and 51655 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-22 23:25:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:25:35,559 INFO L93 Difference]: Finished difference Result 106672 states and 138043 transitions. [2021-11-22 23:25:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:25:35,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2021-11-22 23:25:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:25:35,721 INFO L225 Difference]: With dead ends: 106672 [2021-11-22 23:25:35,721 INFO L226 Difference]: Without dead ends: 66793 [2021-11-22 23:25:35,788 INFO L932 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 [2021-11-22 23:25:35,790 INFO L933 BasicCegarLoop]: 10245 mSDtfsCounter, 5475 mSDsluCounter, 7996 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5475 SdHoareTripleChecker+Valid, 18241 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:25:35,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5475 Valid, 18241 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:25:35,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66793 states. [2021-11-22 23:25:37,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66793 to 66786. [2021-11-22 23:25:37,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66786 states, 66601 states have (on average 1.2921577754087776) internal successors, (86059), 66605 states have internal predecessors, (86059), 164 states have call successors, (164), 20 states have call predecessors, (164), 20 states have return successors, (164), 160 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-22 23:25:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66786 states to 66786 states and 86387 transitions. [2021-11-22 23:25:37,275 INFO L78 Accepts]: Start accepts. Automaton has 66786 states and 86387 transitions. Word has length 90 [2021-11-22 23:25:37,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:25:37,277 INFO L470 AbstractCegarLoop]: Abstraction has 66786 states and 86387 transitions. [2021-11-22 23:25:37,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-22 23:25:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 66786 states and 86387 transitions. [2021-11-22 23:25:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-22 23:25:37,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:25:37,300 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-22 23:25:37,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 23:25:37,301 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:25:37,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:25:37,301 INFO L85 PathProgramCache]: Analyzing trace with hash -395959240, now seen corresponding path program 1 times [2021-11-22 23:25:37,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:25:37,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568342658] [2021-11-22 23:25:37,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:25:37,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:25:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:25:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 23:25:37,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:25:37,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568342658] [2021-11-22 23:25:37,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568342658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:25:37,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:25:37,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:25:37,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823157575] [2021-11-22 23:25:37,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:25:37,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:25:37,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:25:37,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:25:37,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:25:37,894 INFO L87 Difference]: Start difference. First operand 66786 states and 86387 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-22 23:25:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:25:39,311 INFO L93 Difference]: Finished difference Result 160552 states and 207667 transitions. [2021-11-22 23:25:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:25:39,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2021-11-22 23:25:39,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:25:39,493 INFO L225 Difference]: With dead ends: 160552 [2021-11-22 23:25:39,493 INFO L226 Difference]: Without dead ends: 93777 [2021-11-22 23:25:39,582 INFO L932 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 [2021-11-22 23:25:39,585 INFO L933 BasicCegarLoop]: 11280 mSDtfsCounter, 6409 mSDsluCounter, 7068 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6409 SdHoareTripleChecker+Valid, 18348 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:25:39,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6409 Valid, 18348 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:25:39,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93777 states. [2021-11-22 23:25:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93777 to 93770. [2021-11-22 23:25:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93770 states, 93545 states have (on average 1.2918595328451548) internal successors, (120847), 93549 states have internal predecessors, (120847), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-22 23:25:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93770 states to 93770 states and 121239 transitions. [2021-11-22 23:25:41,508 INFO L78 Accepts]: Start accepts. Automaton has 93770 states and 121239 transitions. Word has length 102 [2021-11-22 23:25:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:25:41,509 INFO L470 AbstractCegarLoop]: Abstraction has 93770 states and 121239 transitions. [2021-11-22 23:25:41,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-22 23:25:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 93770 states and 121239 transitions. [2021-11-22 23:25:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-22 23:25:41,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:25:41,541 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:25:41,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 23:25:41,542 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:25:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:25:41,543 INFO L85 PathProgramCache]: Analyzing trace with hash 299774145, now seen corresponding path program 1 times [2021-11-22 23:25:41,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:25:41,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166043259] [2021-11-22 23:25:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:25:41,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:25:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:25:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 23:25:41,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:25:41,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166043259] [2021-11-22 23:25:41,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166043259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:25:41,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:25:41,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 23:25:41,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861189841] [2021-11-22 23:25:41,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:25:41,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 23:25:41,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:25:41,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 23:25:41,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 23:25:41,838 INFO L87 Difference]: Start difference. First operand 93770 states and 121239 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2021-11-22 23:25:44,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:25:44,287 INFO L93 Difference]: Finished difference Result 219008 states and 283231 transitions. [2021-11-22 23:25:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 23:25:44,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 115 [2021-11-22 23:25:44,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:25:44,580 INFO L225 Difference]: With dead ends: 219008 [2021-11-22 23:25:44,580 INFO L226 Difference]: Without dead ends: 125249 [2021-11-22 23:25:44,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:25:44,686 INFO L933 BasicCegarLoop]: 14442 mSDtfsCounter, 11818 mSDsluCounter, 17060 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11818 SdHoareTripleChecker+Valid, 31502 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:25:44,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11818 Valid, 31502 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:25:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125249 states. [2021-11-22 23:25:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125249 to 93786. [2021-11-22 23:25:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93786 states, 93561 states have (on average 1.2918096215303385) internal successors, (120863), 93565 states have internal predecessors, (120863), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-22 23:25:46,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93786 states to 93786 states and 121255 transitions. [2021-11-22 23:25:46,790 INFO L78 Accepts]: Start accepts. Automaton has 93786 states and 121255 transitions. Word has length 115 [2021-11-22 23:25:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:25:46,791 INFO L470 AbstractCegarLoop]: Abstraction has 93786 states and 121255 transitions. [2021-11-22 23:25:46,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2021-11-22 23:25:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 93786 states and 121255 transitions. [2021-11-22 23:25:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-22 23:25:46,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:25:46,824 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:25:46,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 23:25:46,824 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:25:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:25:46,825 INFO L85 PathProgramCache]: Analyzing trace with hash -478358964, now seen corresponding path program 1 times [2021-11-22 23:25:46,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:25:46,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080652032] [2021-11-22 23:25:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:25:46,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:25:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:25:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 23:25:47,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:25:47,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080652032] [2021-11-22 23:25:47,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080652032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:25:47,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:25:47,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 23:25:47,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121986341] [2021-11-22 23:25:47,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:25:47,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 23:25:47,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:25:47,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 23:25:47,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 23:25:47,079 INFO L87 Difference]: Start difference. First operand 93786 states and 121255 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2021-11-22 23:25:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:25:49,405 INFO L93 Difference]: Finished difference Result 219048 states and 283271 transitions. [2021-11-22 23:25:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 23:25:49,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 124 [2021-11-22 23:25:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:25:49,774 INFO L225 Difference]: With dead ends: 219048 [2021-11-22 23:25:49,774 INFO L226 Difference]: Without dead ends: 125273 [2021-11-22 23:25:49,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:25:49,864 INFO L933 BasicCegarLoop]: 12272 mSDtfsCounter, 11818 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11818 SdHoareTripleChecker+Valid, 29285 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:25:49,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11818 Valid, 29285 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:25:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125273 states. [2021-11-22 23:25:52,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125273 to 93786. [2021-11-22 23:25:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93786 states, 93561 states have (on average 1.2918096215303385) internal successors, (120863), 93565 states have internal predecessors, (120863), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-22 23:25:52,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93786 states to 93786 states and 121255 transitions. [2021-11-22 23:25:52,341 INFO L78 Accepts]: Start accepts. Automaton has 93786 states and 121255 transitions. Word has length 124 [2021-11-22 23:25:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:25:52,342 INFO L470 AbstractCegarLoop]: Abstraction has 93786 states and 121255 transitions. [2021-11-22 23:25:52,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2021-11-22 23:25:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 93786 states and 121255 transitions. [2021-11-22 23:25:52,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-22 23:25:52,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:25:52,375 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:25:52,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 23:25:52,375 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:25:52,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:25:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1859629002, now seen corresponding path program 1 times [2021-11-22 23:25:52,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:25:52,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834619568] [2021-11-22 23:25:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:25:52,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:25:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:25:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 23:25:52,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:25:52,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834619568] [2021-11-22 23:25:52,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834619568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:25:52,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:25:52,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 23:25:52,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554314411] [2021-11-22 23:25:52,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:25:52,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:25:52,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:25:52,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:25:52,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:25:52,827 INFO L87 Difference]: Start difference. First operand 93786 states and 121255 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) [2021-11-22 23:25:54,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:25:54,757 INFO L93 Difference]: Finished difference Result 187561 states and 242497 transitions. [2021-11-22 23:25:54,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:25:54,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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 143 [2021-11-22 23:25:54,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:25:54,937 INFO L225 Difference]: With dead ends: 187561 [2021-11-22 23:25:54,937 INFO L226 Difference]: Without dead ends: 93786 [2021-11-22 23:25:55,054 INFO L932 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 [2021-11-22 23:25:55,055 INFO L933 BasicCegarLoop]: 8024 mSDtfsCounter, 7987 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7987 SdHoareTripleChecker+Valid, 8024 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 23:25:55,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7987 Valid, 8024 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 23:25:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93786 states. [2021-11-22 23:25:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93786 to 93786. [2021-11-22 23:25:56,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93786 states, 93561 states have (on average 1.2917241158174881) internal successors, (120855), 93565 states have internal predecessors, (120855), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-22 23:25:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93786 states to 93786 states and 121247 transitions. [2021-11-22 23:25:57,179 INFO L78 Accepts]: Start accepts. Automaton has 93786 states and 121247 transitions. Word has length 143 [2021-11-22 23:25:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:25:57,179 INFO L470 AbstractCegarLoop]: Abstraction has 93786 states and 121247 transitions. [2021-11-22 23:25:57,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) [2021-11-22 23:25:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand 93786 states and 121247 transitions. [2021-11-22 23:25:57,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-22 23:25:57,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:25:57,252 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:25:57,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 23:25:57,252 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:25:57,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:25:57,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1075512240, now seen corresponding path program 1 times [2021-11-22 23:25:57,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:25:57,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770268195] [2021-11-22 23:25:57,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:25:57,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:25:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:25:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 23:25:57,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:25:57,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770268195] [2021-11-22 23:25:57,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770268195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:25:57,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:25:57,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:25:57,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929273499] [2021-11-22 23:25:57,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:25:57,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:25:57,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:25:57,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:25:57,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:25:57,584 INFO L87 Difference]: Start difference. First operand 93786 states and 121247 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-11-22 23:25:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:25:59,646 INFO L93 Difference]: Finished difference Result 188561 states and 243811 transitions. [2021-11-22 23:25:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:25:59,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 147 [2021-11-22 23:25:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:25:59,815 INFO L225 Difference]: With dead ends: 188561 [2021-11-22 23:25:59,816 INFO L226 Difference]: Without dead ends: 94786 [2021-11-22 23:25:59,906 INFO L932 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 [2021-11-22 23:25:59,907 INFO L933 BasicCegarLoop]: 7981 mSDtfsCounter, 325 mSDsluCounter, 7961 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 15942 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:25:59,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 15942 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:25:59,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94786 states.