./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 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-dev-173e394 [2021-11-06 20:14:26,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:14:26,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:14:26,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:14:26,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:14:26,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:14:26,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:14:26,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:14:26,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:14:26,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:14:26,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:14:26,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:14:26,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:14:26,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:14:26,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:14:26,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:14:26,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:14:26,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:14:26,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:14:26,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:14:26,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:14:26,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:14:26,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:14:26,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:14:26,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:14:26,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:14:26,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:14:26,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:14:26,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:14:26,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:14:26,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:14:26,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:14:26,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:14:26,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:14:26,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:14:26,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:14:26,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:14:26,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:14:26,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:14:26,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:14:26,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:14:26,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:14:26,533 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:14:26,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:14:26,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:14:26,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:14:26,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:14:26,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:14:26,535 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:14:26,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:14:26,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:14:26,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:14:26,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:14:26,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:14:26,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:14:26,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:14:26,537 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:14:26,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:14:26,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:14:26,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:14:26,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:14:26,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:14:26,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:14:26,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:14:26,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:14:26,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:14:26,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:14:26,538 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:14:26,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:14:26,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:14:26,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:14:26,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28669211a2ef49b5efd7443ec92409c5f49218a96d1252c934deb7757bde86cd [2021-11-06 20:14:26,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:14:26,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:14:26,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:14:26,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:14:26,771 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:14:26,771 INFO L432 ainManager$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 [2021-11-06 20:14:26,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e04d96b/953241722acd464e8583041b9e7be81a/FLAG123ecf987 [2021-11-06 20:14:27,492 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:14:27,493 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 [2021-11-06 20:14:27,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e04d96b/953241722acd464e8583041b9e7be81a/FLAG123ecf987 [2021-11-06 20:14:27,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e04d96b/953241722acd464e8583041b9e7be81a [2021-11-06 20:14:27,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:14:27,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:14:27,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:14:27,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:14:27,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:14:27,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:14:27" (1/1) ... [2021-11-06 20:14:27,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b0df97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:27, skipping insertion in model container [2021-11-06 20:14:27,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:14:27" (1/1) ... [2021-11-06 20:14:27,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:14:27,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:14:29,976 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] [2021-11-06 20:14:29,978 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] [2021-11-06 20:14:29,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:14:30,041 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:14:30,344 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387086,387099] [2021-11-06 20:14:30,344 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387231,387244] [2021-11-06 20:14:30,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:14:30,495 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:14:30,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:30 WrapperNode [2021-11-06 20:14:30,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:14:30,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:14:30,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:14:30,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:14:30,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:30" (1/1) ... [2021-11-06 20:14:30,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:30" (1/1) ... [2021-11-06 20:14:32,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:14:32,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:14:32,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:14:32,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:14:32,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:30" (1/1) ... [2021-11-06 20:14:32,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:30" (1/1) ... [2021-11-06 20:14:32,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:30" (1/1) ... [2021-11-06 20:14:32,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:30" (1/1) ... [2021-11-06 20:14:33,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:30" (1/1) ... [2021-11-06 20:14:33,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:30" (1/1) ... [2021-11-06 20:14:33,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:30" (1/1) ... [2021-11-06 20:14:34,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:14:34,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:14:34,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:14:34,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:14:34,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:30" (1/1) ... [2021-11-06 20:14:34,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:14:34,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:14:34,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 20:14:34,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 20:14:34,127 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-06 20:14:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:14:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:14:34,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:14:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:14:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:14:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:14:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:14:34,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:14:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:14:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:14:34,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:14:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:14:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:14:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:14:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:15:13,000 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 20:15:13,000 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 20:15:13,001 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:15:13,001 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:15:13,004 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:15:13,005 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:15:13,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:15:13,047 INFO L299 CfgBuilder]: Removed 20046 assume(true) statements. [2021-11-06 20:15:13,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:15:13 BoogieIcfgContainer [2021-11-06 20:15:13,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:15:13,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:15:13,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:15:13,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:15:13,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:14:27" (1/3) ... [2021-11-06 20:15:13,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c5a078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:15:13, skipping insertion in model container [2021-11-06 20:15:13,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:14:30" (2/3) ... [2021-11-06 20:15:13,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c5a078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:15:13, skipping insertion in model container [2021-11-06 20:15:13,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:15:13" (3/3) ... [2021-11-06 20:15:13,066 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-06 20:15:13,073 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:15:13,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-06 20:15:13,142 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:15:13,147 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 20:15:13,147 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-06 20:15:13,266 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) [2021-11-06 20:15:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 20:15:13,287 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:15:13,288 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:15:13,289 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)] === [2021-11-06 20:15:13,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:15:13,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2040958562, now seen corresponding path program 1 times [2021-11-06 20:15:13,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:15:13,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177814898] [2021-11-06 20:15:13,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:15:13,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:15:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:15:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:15:13,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:15:13,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177814898] [2021-11-06 20:15:13,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177814898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:15:13,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:15:13,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:15:13,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318663038] [2021-11-06 20:15:13,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:15:13,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:15:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:15:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:15:13,923 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) [2021-11-06 20:15:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:15:17,167 INFO L93 Difference]: Finished difference Result 36867 states and 44235 transitions. [2021-11-06 20:15:17,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:15:17,169 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 [2021-11-06 20:15:17,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:15:17,257 INFO L225 Difference]: With dead ends: 36867 [2021-11-06 20:15:17,258 INFO L226 Difference]: Without dead ends: 22855 [2021-11-06 20:15:17,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:15:17,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22855 states. [2021-11-06 20:15:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22855 to 22274. [2021-11-06 20:15:18,012 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) [2021-11-06 20:15:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22274 states to 22274 states and 26415 transitions. [2021-11-06 20:15:18,065 INFO L78 Accepts]: Start accepts. Automaton has 22274 states and 26415 transitions. Word has length 74 [2021-11-06 20:15:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:15:18,067 INFO L470 AbstractCegarLoop]: Abstraction has 22274 states and 26415 transitions. [2021-11-06 20:15:18,070 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) [2021-11-06 20:15:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 22274 states and 26415 transitions. [2021-11-06 20:15:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 20:15:18,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:15:18,074 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:15:18,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:15:18,075 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)] === [2021-11-06 20:15:18,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:15:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1734901416, now seen corresponding path program 1 times [2021-11-06 20:15:18,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:15:18,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26426841] [2021-11-06 20:15:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:15:18,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:15:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:15:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:15:18,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:15:18,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26426841] [2021-11-06 20:15:18,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26426841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:15:18,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:15:18,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:15:18,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782652934] [2021-11-06 20:15:18,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:15:18,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:15:18,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:15:18,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:15:18,315 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) [2021-11-06 20:15:21,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:15:21,594 INFO L93 Difference]: Finished difference Result 62320 states and 73906 transitions. [2021-11-06 20:15:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:15:21,595 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 [2021-11-06 20:15:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:15:21,697 INFO L225 Difference]: With dead ends: 62320 [2021-11-06 20:15:21,699 INFO L226 Difference]: Without dead ends: 40170 [2021-11-06 20:15:21,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:15:21,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40170 states. [2021-11-06 20:15:22,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40170 to 40018. [2021-11-06 20:15:22,705 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) [2021-11-06 20:15:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40018 states to 40018 states and 47463 transitions. [2021-11-06 20:15:22,768 INFO L78 Accepts]: Start accepts. Automaton has 40018 states and 47463 transitions. Word has length 96 [2021-11-06 20:15:22,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:15:22,770 INFO L470 AbstractCegarLoop]: Abstraction has 40018 states and 47463 transitions. [2021-11-06 20:15:22,772 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) [2021-11-06 20:15:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 40018 states and 47463 transitions. [2021-11-06 20:15:22,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-06 20:15:22,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:15:22,776 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:15:22,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:15:22,777 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)] === [2021-11-06 20:15:22,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:15:22,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1395204584, now seen corresponding path program 1 times [2021-11-06 20:15:22,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:15:22,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829360617] [2021-11-06 20:15:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:15:22,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:15:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:15:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:15:23,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:15:23,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829360617] [2021-11-06 20:15:23,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829360617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:15:23,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:15:23,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 20:15:23,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283239820] [2021-11-06 20:15:23,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 20:15:23,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:15:23,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 20:15:23,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 20:15:23,078 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) [2021-11-06 20:15:29,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:15:29,561 INFO L93 Difference]: Finished difference Result 103512 states and 123029 transitions. [2021-11-06 20:15:29,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 20:15:29,562 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 [2021-11-06 20:15:29,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:15:29,843 INFO L225 Difference]: With dead ends: 103512 [2021-11-06 20:15:29,843 INFO L226 Difference]: Without dead ends: 63618 [2021-11-06 20:15:29,933 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 20:15:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63618 states. [2021-11-06 20:15:31,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63618 to 63558. [2021-11-06 20:15:31,470 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) [2021-11-06 20:15:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63558 states to 63558 states and 75587 transitions. [2021-11-06 20:15:31,582 INFO L78 Accepts]: Start accepts. Automaton has 63558 states and 75587 transitions. Word has length 119 [2021-11-06 20:15:31,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:15:31,583 INFO L470 AbstractCegarLoop]: Abstraction has 63558 states and 75587 transitions. [2021-11-06 20:15:31,584 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) [2021-11-06 20:15:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 63558 states and 75587 transitions. [2021-11-06 20:15:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-06 20:15:31,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:15:31,591 INFO L513 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] [2021-11-06 20:15:31,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:15:31,592 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)] === [2021-11-06 20:15:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:15:31,593 INFO L85 PathProgramCache]: Analyzing trace with hash -578980717, now seen corresponding path program 1 times [2021-11-06 20:15:31,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:15:31,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136594139] [2021-11-06 20:15:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:15:31,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:15:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:15:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:15:31,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:15:31,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136594139] [2021-11-06 20:15:31,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136594139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:15:31,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:15:31,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:15:31,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245751578] [2021-11-06 20:15:31,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:15:31,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:15:31,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:15:31,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:15:31,989 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) [2021-11-06 20:15:35,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:15:35,995 INFO L93 Difference]: Finished difference Result 138810 states and 165192 transitions. [2021-11-06 20:15:35,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:15:35,995 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 [2021-11-06 20:15:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:15:36,218 INFO L225 Difference]: With dead ends: 138810 [2021-11-06 20:15:36,218 INFO L226 Difference]: Without dead ends: 75376 [2021-11-06 20:15:36,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:15:36,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75376 states. [2021-11-06 20:15:38,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75376 to 75350. [2021-11-06 20:15:38,542 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) [2021-11-06 20:15:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75350 states to 75350 states and 89667 transitions. [2021-11-06 20:15:38,670 INFO L78 Accepts]: Start accepts. Automaton has 75350 states and 89667 transitions. Word has length 158 [2021-11-06 20:15:38,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:15:38,671 INFO L470 AbstractCegarLoop]: Abstraction has 75350 states and 89667 transitions. [2021-11-06 20:15:38,672 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) [2021-11-06 20:15:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 75350 states and 89667 transitions. [2021-11-06 20:15:38,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-06 20:15:38,676 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:15:38,676 INFO L513 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] [2021-11-06 20:15:38,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:15:38,677 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)] === [2021-11-06 20:15:38,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:15:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1539650330, now seen corresponding path program 1 times [2021-11-06 20:15:38,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:15:38,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569608621] [2021-11-06 20:15:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:15:38,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:15:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:15:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 20:15:38,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:15:38,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569608621] [2021-11-06 20:15:38,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569608621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:15:38,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:15:38,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:15:38,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119538715] [2021-11-06 20:15:38,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:15:38,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:15:38,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:15:38,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:15:38,895 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) [2021-11-06 20:15:42,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:15:42,860 INFO L93 Difference]: Finished difference Result 162378 states and 193320 transitions. [2021-11-06 20:15:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:15:42,861 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 [2021-11-06 20:15:42,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:15:43,059 INFO L225 Difference]: With dead ends: 162378 [2021-11-06 20:15:43,059 INFO L226 Difference]: Without dead ends: 87152 [2021-11-06 20:15:43,299 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:15:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87152 states. [2021-11-06 20:15:45,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87152 to 87126. [2021-11-06 20:15:45,089 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) [2021-11-06 20:15:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87126 states to 87126 states and 103731 transitions. [2021-11-06 20:15:45,244 INFO L78 Accepts]: Start accepts. Automaton has 87126 states and 103731 transitions. Word has length 195 [2021-11-06 20:15:45,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:15:45,244 INFO L470 AbstractCegarLoop]: Abstraction has 87126 states and 103731 transitions. [2021-11-06 20:15:45,245 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) [2021-11-06 20:15:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 87126 states and 103731 transitions. [2021-11-06 20:15:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-06 20:15:45,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:15:45,250 INFO L513 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] [2021-11-06 20:15:45,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:15:45,250 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)] === [2021-11-06 20:15:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:15:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash -700616668, now seen corresponding path program 1 times [2021-11-06 20:15:45,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:15:45,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105726767] [2021-11-06 20:15:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:15:45,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:15:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:15:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 20:15:45,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:15:45,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105726767] [2021-11-06 20:15:45,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105726767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:15:45,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:15:45,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:15:45,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187981591] [2021-11-06 20:15:45,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:15:45,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:15:45,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:15:45,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:15:45,443 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) [2021-11-06 20:15:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:15:49,781 INFO L93 Difference]: Finished difference Result 185942 states and 221472 transitions. [2021-11-06 20:15:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:15:49,783 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 [2021-11-06 20:15:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:15:49,995 INFO L225 Difference]: With dead ends: 185942 [2021-11-06 20:15:49,996 INFO L226 Difference]: Without dead ends: 98940 [2021-11-06 20:15:50,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:15:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98940 states. [2021-11-06 20:15:52,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98940 to 98914. [2021-11-06 20:15:52,812 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) [2021-11-06 20:15:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98914 states to 98914 states and 117807 transitions. [2021-11-06 20:15:53,036 INFO L78 Accepts]: Start accepts. Automaton has 98914 states and 117807 transitions. Word has length 195 [2021-11-06 20:15:53,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:15:53,037 INFO L470 AbstractCegarLoop]: Abstraction has 98914 states and 117807 transitions. [2021-11-06 20:15:53,037 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) [2021-11-06 20:15:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 98914 states and 117807 transitions. [2021-11-06 20:15:53,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-06 20:15:53,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:15:53,069 INFO L513 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] [2021-11-06 20:15:53,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 20:15:53,069 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)] === [2021-11-06 20:15:53,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:15:53,070 INFO L85 PathProgramCache]: Analyzing trace with hash -609554113, now seen corresponding path program 1 times [2021-11-06 20:15:53,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:15:53,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430576595] [2021-11-06 20:15:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:15:53,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:15:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:15:53,369 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 20:15:53,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:15:53,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430576595] [2021-11-06 20:15:53,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430576595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:15:53,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:15:53,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:15:53,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979593234] [2021-11-06 20:15:53,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:15:53,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:15:53,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:15:53,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:15:53,372 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) [2021-11-06 20:15:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:15:57,986 INFO L93 Difference]: Finished difference Result 209514 states and 249616 transitions. [2021-11-06 20:15:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:15:57,986 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 [2021-11-06 20:15:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:15:58,227 INFO L225 Difference]: With dead ends: 209514 [2021-11-06 20:15:58,227 INFO L226 Difference]: Without dead ends: 110724 [2021-11-06 20:15:58,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:15:58,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110724 states.