./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.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 28669211a2ef49b5efd7443ec92409c5f49218a96d1252c934deb7757bde86cd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 18:46:36,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 18:46:36,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 18:46:36,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 18:46:36,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 18:46:36,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 18:46:36,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 18:46:36,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 18:46:36,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 18:46:36,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 18:46:36,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 18:46:36,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 18:46:36,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 18:46:36,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 18:46:36,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 18:46:36,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 18:46:36,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 18:46:36,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 18:46:36,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 18:46:36,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 18:46:36,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 18:46:36,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 18:46:36,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 18:46:36,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 18:46:36,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 18:46:36,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 18:46:36,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 18:46:36,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 18:46:36,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 18:46:36,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 18:46:36,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 18:46:36,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 18:46:36,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 18:46:36,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 18:46:36,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 18:46:36,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 18:46:36,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 18:46:36,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 18:46:36,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 18:46:36,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 18:46:36,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 18:46:36,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 18:46:36,937 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 18:46:36,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 18:46:36,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 18:46:36,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 18:46:36,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 18:46:36,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 18:46:36,942 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 18:46:36,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 18:46:36,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 18:46:36,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 18:46:36,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 18:46:36,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 18:46:36,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 18:46:36,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 18:46:36,944 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 18:46:36,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 18:46:36,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 18:46:36,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 18:46:36,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 18:46:36,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 18:46:36,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 18:46:36,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 18:46:36,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 18:46:36,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 18:46:36,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 18:46:36,945 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 18:46:36,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 18:46:36,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 18:46:36,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 18:46:36,947 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28669211a2ef49b5efd7443ec92409c5f49218a96d1252c934deb7757bde86cd [2021-11-07 18:46:37,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 18:46:37,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 18:46:37,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 18:46:37,188 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 18:46:37,189 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 18:46:37,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-07 18:46:37,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46f17e4b/58e9299d95384e9ab475597557d30233/FLAG2a1c9fadd [2021-11-07 18:46:37,973 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 18:46:37,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-07 18:46:38,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46f17e4b/58e9299d95384e9ab475597557d30233/FLAG2a1c9fadd [2021-11-07 18:46:38,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d46f17e4b/58e9299d95384e9ab475597557d30233 [2021-11-07 18:46:38,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 18:46:38,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 18:46:38,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 18:46:38,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 18:46:38,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 18:46:38,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:46:38" (1/1) ... [2021-11-07 18:46:38,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f45dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:38, skipping insertion in model container [2021-11-07 18:46:38,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:46:38" (1/1) ... [2021-11-07 18:46:38,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 18:46:38,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 18:46:40,667 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387086,387099] [2021-11-07 18:46:40,670 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387231,387244] [2021-11-07 18:46:40,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 18:46:40,752 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 18:46:41,077 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387086,387099] [2021-11-07 18:46:41,077 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387231,387244] [2021-11-07 18:46:41,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 18:46:41,232 INFO L208 MainTranslator]: Completed translation [2021-11-07 18:46:41,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:41 WrapperNode [2021-11-07 18:46:41,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 18:46:41,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 18:46:41,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 18:46:41,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 18:46:41,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:41" (1/1) ... [2021-11-07 18:46:41,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:41" (1/1) ... [2021-11-07 18:46:43,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 18:46:43,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 18:46:43,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 18:46:43,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 18:46:43,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:41" (1/1) ... [2021-11-07 18:46:43,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:41" (1/1) ... [2021-11-07 18:46:43,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:41" (1/1) ... [2021-11-07 18:46:43,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:41" (1/1) ... [2021-11-07 18:46:44,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:41" (1/1) ... [2021-11-07 18:46:44,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:41" (1/1) ... [2021-11-07 18:46:44,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:41" (1/1) ... [2021-11-07 18:46:45,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 18:46:45,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 18:46:45,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 18:46:45,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 18:46:45,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:41" (1/1) ... [2021-11-07 18:46:45,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 18:46:45,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 18:46:45,209 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) [2021-11-07 18:46:45,223 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 [2021-11-07 18:46:45,251 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 18:46:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 18:46:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 18:46:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 18:46:45,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 18:46:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 18:46:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 18:46:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 18:46:45,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 18:46:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 18:46:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 18:46:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 18:46:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 18:46:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 18:46:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 18:46:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 18:47:22,006 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 18:47:22,006 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 18:47:22,007 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 18:47:22,007 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 18:47:22,009 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 18:47:22,010 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 18:47:22,039 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 18:47:22,039 INFO L299 CfgBuilder]: Removed 20046 assume(true) statements. [2021-11-07 18:47:22,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:47:22 BoogieIcfgContainer [2021-11-07 18:47:22,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 18:47:22,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 18:47:22,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 18:47:22,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 18:47:22,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:46:38" (1/3) ... [2021-11-07 18:47:22,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac9be0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:47:22, skipping insertion in model container [2021-11-07 18:47:22,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:46:41" (2/3) ... [2021-11-07 18:47:22,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac9be0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:47:22, skipping insertion in model container [2021-11-07 18:47:22,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:47:22" (3/3) ... [2021-11-07 18:47:22,052 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-07 18:47:22,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 18:47:22,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 18:47:22,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 18:47:22,142 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 [2021-11-07 18:47:22,142 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 18:47:22,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 13720 states, 13710 states have (on average 1.2010940919037199) internal successors, (16467), 13719 states have internal predecessors, (16467), 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) [2021-11-07 18:47:22,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 18:47:22,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:47:22,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:47:22,483 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 18:47:22,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:47:22,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2040958562, now seen corresponding path program 1 times [2021-11-07 18:47:22,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:47:22,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479344304] [2021-11-07 18:47:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:47:22,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:47:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:47:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:47:23,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:47:23,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479344304] [2021-11-07 18:47:23,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479344304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:47:23,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:47:23,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:47:23,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169614787] [2021-11-07 18:47:23,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:47:23,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:47:23,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:47:23,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:47:23,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:47:23,125 INFO L87 Difference]: Start difference. First operand has 13720 states, 13710 states have (on average 1.2010940919037199) internal successors, (16467), 13719 states have internal predecessors, (16467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-07 18:47:25,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:47:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:47:26,302 INFO L93 Difference]: Finished difference Result 36867 states and 44235 transitions. [2021-11-07 18:47:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:47:26,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-07 18:47:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:47:26,404 INFO L225 Difference]: With dead ends: 36867 [2021-11-07 18:47:26,404 INFO L226 Difference]: Without dead ends: 22855 [2021-11-07 18:47:26,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:47:26,442 INFO L933 BasicCegarLoop]: 16411 mSDtfsCounter, 11454 mSDsluCounter, 16325 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2278.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11454 SdHoareTripleChecker+Valid, 32736 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.13ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2410.25ms IncrementalHoareTripleChecker+Time [2021-11-07 18:47:26,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11454 Valid, 32736 Invalid, 105 Unknown, 0 Unchecked, 60.13ms Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 1 Unknown, 0 Unchecked, 2410.25ms Time] [2021-11-07 18:47:26,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22855 states. [2021-11-07 18:47:26,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22855 to 22274. [2021-11-07 18:47:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22274 states, 22264 states have (on average 1.1864444843693855) internal successors, (26415), 22273 states have internal predecessors, (26415), 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) [2021-11-07 18:47:26,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22274 states to 22274 states and 26415 transitions. [2021-11-07 18:47:26,988 INFO L78 Accepts]: Start accepts. Automaton has 22274 states and 26415 transitions. Word has length 74 [2021-11-07 18:47:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:47:26,989 INFO L470 AbstractCegarLoop]: Abstraction has 22274 states and 26415 transitions. [2021-11-07 18:47:26,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-07 18:47:26,990 INFO L276 IsEmpty]: Start isEmpty. Operand 22274 states and 26415 transitions. [2021-11-07 18:47:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 18:47:26,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:47:26,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:47:26,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 18:47:26,995 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 18:47:26,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:47:26,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1734901416, now seen corresponding path program 1 times [2021-11-07 18:47:26,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:47:26,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422267090] [2021-11-07 18:47:26,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:47:26,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:47:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:47:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:47:27,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:47:27,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422267090] [2021-11-07 18:47:27,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422267090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:47:27,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:47:27,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:47:27,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976112233] [2021-11-07 18:47:27,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:47:27,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:47:27,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:47:27,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:47:27,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:47:27,310 INFO L87 Difference]: Start difference. First operand 22274 states and 26415 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-07 18:47:29,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:47:30,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:47:30,561 INFO L93 Difference]: Finished difference Result 62320 states and 73906 transitions. [2021-11-07 18:47:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:47:30,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-07 18:47:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:47:30,677 INFO L225 Difference]: With dead ends: 62320 [2021-11-07 18:47:30,678 INFO L226 Difference]: Without dead ends: 40170 [2021-11-07 18:47:30,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:47:30,732 INFO L933 BasicCegarLoop]: 15950 mSDtfsCounter, 13889 mSDsluCounter, 15031 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2138.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13889 SdHoareTripleChecker+Valid, 30981 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.17ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2332.35ms IncrementalHoareTripleChecker+Time [2021-11-07 18:47:30,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13889 Valid, 30981 Invalid, 49 Unknown, 0 Unchecked, 34.17ms Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 1 Unknown, 0 Unchecked, 2332.35ms Time] [2021-11-07 18:47:30,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40170 states. [2021-11-07 18:47:31,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40170 to 40018. [2021-11-07 18:47:31,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40018 states, 40008 states have (on average 1.1863377324535094) internal successors, (47463), 40017 states have internal predecessors, (47463), 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) [2021-11-07 18:47:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40018 states to 40018 states and 47463 transitions. [2021-11-07 18:47:31,932 INFO L78 Accepts]: Start accepts. Automaton has 40018 states and 47463 transitions. Word has length 96 [2021-11-07 18:47:31,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:47:31,933 INFO L470 AbstractCegarLoop]: Abstraction has 40018 states and 47463 transitions. [2021-11-07 18:47:31,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-07 18:47:31,939 INFO L276 IsEmpty]: Start isEmpty. Operand 40018 states and 47463 transitions. [2021-11-07 18:47:31,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 18:47:31,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:47:31,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:47:31,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 18:47:31,943 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 18:47:31,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:47:31,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1395204584, now seen corresponding path program 1 times [2021-11-07 18:47:31,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:47:31,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110311724] [2021-11-07 18:47:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:47:31,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:47:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:47:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:47:32,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:47:32,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110311724] [2021-11-07 18:47:32,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110311724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:47:32,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:47:32,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 18:47:32,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011539570] [2021-11-07 18:47:32,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:47:32,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 18:47:32,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:47:32,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 18:47:32,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 18:47:32,206 INFO L87 Difference]: Start difference. First operand 40018 states and 47463 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2021-11-07 18:47:34,248 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:47:36,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:47:38,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:47:38,958 INFO L93 Difference]: Finished difference Result 103512 states and 123029 transitions. [2021-11-07 18:47:38,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 18:47:38,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 119 [2021-11-07 18:47:38,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:47:39,112 INFO L225 Difference]: With dead ends: 103512 [2021-11-07 18:47:39,113 INFO L226 Difference]: Without dead ends: 63618 [2021-11-07 18:47:39,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.91ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 18:47:39,326 INFO L933 BasicCegarLoop]: 22540 mSDtfsCounter, 42633 mSDsluCounter, 39954 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 68 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4700.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42633 SdHoareTripleChecker+Valid, 62494 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.57ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5063.68ms IncrementalHoareTripleChecker+Time [2021-11-07 18:47:39,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42633 Valid, 62494 Invalid, 330 Unknown, 0 Unchecked, 101.57ms Time], IncrementalHoareTripleChecker [68 Valid, 260 Invalid, 2 Unknown, 0 Unchecked, 5063.68ms Time] [2021-11-07 18:47:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63618 states. [2021-11-07 18:47:40,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63618 to 63558. [2021-11-07 18:47:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63558 states, 63548 states have (on average 1.1894473468873923) internal successors, (75587), 63557 states have internal predecessors, (75587), 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) [2021-11-07 18:47:40,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63558 states to 63558 states and 75587 transitions. [2021-11-07 18:47:40,860 INFO L78 Accepts]: Start accepts. Automaton has 63558 states and 75587 transitions. Word has length 119 [2021-11-07 18:47:40,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:47:40,861 INFO L470 AbstractCegarLoop]: Abstraction has 63558 states and 75587 transitions. [2021-11-07 18:47:40,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2021-11-07 18:47:40,861 INFO L276 IsEmpty]: Start isEmpty. Operand 63558 states and 75587 transitions. [2021-11-07 18:47:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-07 18:47:40,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:47:40,869 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:47:40,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 18:47:40,869 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 18:47:40,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:47:40,870 INFO L85 PathProgramCache]: Analyzing trace with hash -578980717, now seen corresponding path program 1 times [2021-11-07 18:47:40,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:47:40,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913344641] [2021-11-07 18:47:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:47:40,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:47:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:47:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 18:47:41,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:47:41,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913344641] [2021-11-07 18:47:41,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913344641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:47:41,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:47:41,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:47:41,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946075334] [2021-11-07 18:47:41,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:47:41,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:47:41,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:47:41,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:47:41,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:47:41,261 INFO L87 Difference]: Start difference. First operand 63558 states and 75587 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-07 18:47:43,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:47:45,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:47:45,216 INFO L93 Difference]: Finished difference Result 138810 states and 165192 transitions. [2021-11-07 18:47:45,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:47:45,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2021-11-07 18:47:45,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:47:45,374 INFO L225 Difference]: With dead ends: 138810 [2021-11-07 18:47:45,375 INFO L226 Difference]: Without dead ends: 75376 [2021-11-07 18:47:45,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:47:45,491 INFO L933 BasicCegarLoop]: 22777 mSDtfsCounter, 6823 mSDsluCounter, 15893 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2176.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6823 SdHoareTripleChecker+Valid, 38670 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.34ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2317.12ms IncrementalHoareTripleChecker+Time [2021-11-07 18:47:45,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6823 Valid, 38670 Invalid, 85 Unknown, 0 Unchecked, 47.34ms Time], IncrementalHoareTripleChecker [14 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2317.12ms Time] [2021-11-07 18:47:45,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75376 states. [2021-11-07 18:47:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75376 to 75350. [2021-11-07 18:47:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75350 states, 75340 states have (on average 1.1901645872046722) internal successors, (89667), 75349 states have internal predecessors, (89667), 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) [2021-11-07 18:47:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75350 states to 75350 states and 89667 transitions. [2021-11-07 18:47:47,532 INFO L78 Accepts]: Start accepts. Automaton has 75350 states and 89667 transitions. Word has length 158 [2021-11-07 18:47:47,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:47:47,532 INFO L470 AbstractCegarLoop]: Abstraction has 75350 states and 89667 transitions. [2021-11-07 18:47:47,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-07 18:47:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand 75350 states and 89667 transitions. [2021-11-07 18:47:47,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-07 18:47:47,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:47:47,538 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:47:47,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 18:47:47,538 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 18:47:47,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:47:47,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1539650330, now seen corresponding path program 1 times [2021-11-07 18:47:47,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:47:47,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408526229] [2021-11-07 18:47:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:47:47,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:47:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:47:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 18:47:47,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:47:47,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408526229] [2021-11-07 18:47:47,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408526229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:47:47,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:47:47,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:47:47,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112735876] [2021-11-07 18:47:47,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:47:47,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:47:47,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:47:47,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:47:47,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:47:47,937 INFO L87 Difference]: Start difference. First operand 75350 states and 89667 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2021-11-07 18:47:49,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:47:52,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:47:52,049 INFO L93 Difference]: Finished difference Result 162378 states and 193320 transitions. [2021-11-07 18:47:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:47:52,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 195 [2021-11-07 18:47:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:47:52,270 INFO L225 Difference]: With dead ends: 162378 [2021-11-07 18:47:52,271 INFO L226 Difference]: Without dead ends: 87152 [2021-11-07 18:47:52,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:47:52,472 INFO L933 BasicCegarLoop]: 22777 mSDtfsCounter, 6817 mSDsluCounter, 15906 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2178.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6817 SdHoareTripleChecker+Valid, 38683 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.06ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2296.74ms IncrementalHoareTripleChecker+Time [2021-11-07 18:47:52,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6817 Valid, 38683 Invalid, 78 Unknown, 0 Unchecked, 23.06ms Time], IncrementalHoareTripleChecker [12 Valid, 65 Invalid, 1 Unknown, 0 Unchecked, 2296.74ms Time] [2021-11-07 18:47:52,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87152 states. [2021-11-07 18:47:54,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87152 to 87126. [2021-11-07 18:47:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87126 states, 87116 states have (on average 1.190722714541531) internal successors, (103731), 87125 states have internal predecessors, (103731), 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) [2021-11-07 18:47:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87126 states to 87126 states and 103731 transitions. [2021-11-07 18:47:54,747 INFO L78 Accepts]: Start accepts. Automaton has 87126 states and 103731 transitions. Word has length 195 [2021-11-07 18:47:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:47:54,747 INFO L470 AbstractCegarLoop]: Abstraction has 87126 states and 103731 transitions. [2021-11-07 18:47:54,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2021-11-07 18:47:54,748 INFO L276 IsEmpty]: Start isEmpty. Operand 87126 states and 103731 transitions. [2021-11-07 18:47:54,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-07 18:47:54,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:47:54,752 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:47:54,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 18:47:54,753 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 18:47:54,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:47:54,753 INFO L85 PathProgramCache]: Analyzing trace with hash -700616668, now seen corresponding path program 1 times [2021-11-07 18:47:54,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:47:54,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989716697] [2021-11-07 18:47:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:47:54,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:47:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:47:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 18:47:55,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:47:55,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989716697] [2021-11-07 18:47:55,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989716697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:47:55,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:47:55,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:47:55,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587574708] [2021-11-07 18:47:55,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:47:55,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:47:55,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:47:55,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:47:55,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:47:55,116 INFO L87 Difference]: Start difference. First operand 87126 states and 103731 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2021-11-07 18:47:57,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:47:59,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:47:59,370 INFO L93 Difference]: Finished difference Result 185942 states and 221472 transitions. [2021-11-07 18:47:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:47:59,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 195 [2021-11-07 18:47:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:47:59,579 INFO L225 Difference]: With dead ends: 185942 [2021-11-07 18:47:59,580 INFO L226 Difference]: Without dead ends: 98940 [2021-11-07 18:47:59,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:47:59,729 INFO L933 BasicCegarLoop]: 22777 mSDtfsCounter, 10113 mSDsluCounter, 12613 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2160.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10113 SdHoareTripleChecker+Valid, 35390 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.77ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2302.45ms IncrementalHoareTripleChecker+Time [2021-11-07 18:47:59,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10113 Valid, 35390 Invalid, 84 Unknown, 0 Unchecked, 20.77ms Time], IncrementalHoareTripleChecker [15 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2302.45ms Time] [2021-11-07 18:47:59,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98940 states. [2021-11-07 18:48:01,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98940 to 98914. [2021-11-07 18:48:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98914 states, 98904 states have (on average 1.1911247270080079) internal successors, (117807), 98913 states have internal predecessors, (117807), 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) [2021-11-07 18:48:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98914 states to 98914 states and 117807 transitions. [2021-11-07 18:48:02,418 INFO L78 Accepts]: Start accepts. Automaton has 98914 states and 117807 transitions. Word has length 195 [2021-11-07 18:48:02,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:48:02,419 INFO L470 AbstractCegarLoop]: Abstraction has 98914 states and 117807 transitions. [2021-11-07 18:48:02,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2021-11-07 18:48:02,420 INFO L276 IsEmpty]: Start isEmpty. Operand 98914 states and 117807 transitions. [2021-11-07 18:48:02,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-07 18:48:02,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:48:02,441 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:48:02,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 18:48:02,441 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 18:48:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:48:02,442 INFO L85 PathProgramCache]: Analyzing trace with hash -609554113, now seen corresponding path program 1 times [2021-11-07 18:48:02,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:48:02,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902371925] [2021-11-07 18:48:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:48:02,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:48:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:48:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 18:48:02,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:48:02,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902371925] [2021-11-07 18:48:02,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902371925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:48:02,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:48:02,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:48:02,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574217285] [2021-11-07 18:48:02,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:48:02,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:48:02,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:48:02,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:48:02,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:48:02,632 INFO L87 Difference]: Start difference. First operand 98914 states and 117807 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2021-11-07 18:48:04,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 18:48:07,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 18:48:07,242 INFO L93 Difference]: Finished difference Result 209514 states and 249616 transitions. [2021-11-07 18:48:07,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 18:48:07,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 229 [2021-11-07 18:48:07,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 18:48:07,466 INFO L225 Difference]: With dead ends: 209514 [2021-11-07 18:48:07,466 INFO L226 Difference]: Without dead ends: 110724 [2021-11-07 18:48:07,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:48:07,607 INFO L933 BasicCegarLoop]: 18086 mSDtfsCounter, 6829 mSDsluCounter, 15896 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2190.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6829 SdHoareTripleChecker+Valid, 33982 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.00ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2335.96ms IncrementalHoareTripleChecker+Time [2021-11-07 18:48:07,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6829 Valid, 33982 Invalid, 82 Unknown, 0 Unchecked, 20.00ms Time], IncrementalHoareTripleChecker [12 Valid, 69 Invalid, 1 Unknown, 0 Unchecked, 2335.96ms Time] [2021-11-07 18:48:07,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110724 states. [2021-11-07 18:48:10,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110724 to 110698. [2021-11-07 18:48:10,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110698 states, 110688 states have (on average 1.1914480341139058) internal successors, (131879), 110697 states have internal predecessors, (131879), 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) [2021-11-07 18:48:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110698 states to 110698 states and 131879 transitions. [2021-11-07 18:48:10,386 INFO L78 Accepts]: Start accepts. Automaton has 110698 states and 131879 transitions. Word has length 229 [2021-11-07 18:48:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 18:48:10,386 INFO L470 AbstractCegarLoop]: Abstraction has 110698 states and 131879 transitions. [2021-11-07 18:48:10,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2021-11-07 18:48:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 110698 states and 131879 transitions. [2021-11-07 18:48:10,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-07 18:48:10,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 18:48:10,413 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 18:48:10,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 18:48:10,413 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 18:48:10,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 18:48:10,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1448587775, now seen corresponding path program 1 times [2021-11-07 18:48:10,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 18:48:10,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554548614] [2021-11-07 18:48:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 18:48:10,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 18:48:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 18:48:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 18:48:10,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 18:48:10,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554548614] [2021-11-07 18:48:10,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554548614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 18:48:10,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 18:48:10,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 18:48:10,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916413738] [2021-11-07 18:48:10,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 18:48:10,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 18:48:10,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 18:48:10,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 18:48:10,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 18:48:10,606 INFO L87 Difference]: Start difference. First operand 110698 states and 131879 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2021-11-07 18:48:12,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []