./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.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-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.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 0f1a59e3fe28583d669f3a9c734ebc5395c61cae2e7711aea93760782e80de65 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:15:30,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:15:30,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:15:30,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:15:30,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:15:30,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:15:30,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:15:30,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:15:30,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:15:30,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:15:30,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:15:30,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:15:30,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:15:30,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:15:30,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:15:30,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:15:30,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:15:30,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:15:30,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:15:30,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:15:30,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:15:30,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:15:30,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:15:30,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:15:30,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:15:30,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:15:30,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:15:30,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:15:30,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:15:30,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:15:30,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:15:30,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:15:30,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:15:30,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:15:30,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:15:30,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:15:30,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:15:30,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:15:30,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:15:30,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:15:30,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:15:30,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:15:30,702 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:15:30,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:15:30,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:15:30,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:15:30,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:15:30,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:15:30,704 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:15:30,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:15:30,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:15:30,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:15:30,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:15:30,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:15:30,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:15:30,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:15:30,706 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:15:30,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:15:30,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:15:30,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:15:30,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:15:30,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:15:30,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:15:30,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:15:30,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:15:30,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:15:30,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:15:30,708 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:15:30,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:15:30,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:15:30,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:15:30,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1a59e3fe28583d669f3a9c734ebc5395c61cae2e7711aea93760782e80de65 [2021-11-06 18:15:30,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:15:30,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:15:30,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:15:30,951 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:15:30,952 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:15:30,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i [2021-11-06 18:15:31,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17efe8007/ecfe21150ba04429a5ceb803d69568b6/FLAG55b8395f3 [2021-11-06 18:15:31,654 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:15:31,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i [2021-11-06 18:15:31,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17efe8007/ecfe21150ba04429a5ceb803d69568b6/FLAG55b8395f3 [2021-11-06 18:15:31,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17efe8007/ecfe21150ba04429a5ceb803d69568b6 [2021-11-06 18:15:31,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:15:31,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:15:31,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:15:31,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:15:31,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:15:32,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:15:31" (1/1) ... [2021-11-06 18:15:32,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d8742f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:32, skipping insertion in model container [2021-11-06 18:15:32,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:15:31" (1/1) ... [2021-11-06 18:15:32,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:15:32,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:15:34,157 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i[410722,410735] [2021-11-06 18:15:34,159 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i[410867,410880] [2021-11-06 18:15:34,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:15:34,249 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:15:34,493 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i[410722,410735] [2021-11-06 18:15:34,494 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i[410867,410880] [2021-11-06 18:15:34,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:15:34,769 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:15:34,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:34 WrapperNode [2021-11-06 18:15:34,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:15:34,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:15:34,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:15:34,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:15:34,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:34" (1/1) ... [2021-11-06 18:15:34,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:34" (1/1) ... [2021-11-06 18:15:36,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:15:36,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:15:36,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:15:36,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:15:36,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:34" (1/1) ... [2021-11-06 18:15:36,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:34" (1/1) ... [2021-11-06 18:15:36,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:34" (1/1) ... [2021-11-06 18:15:36,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:34" (1/1) ... [2021-11-06 18:15:37,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:34" (1/1) ... [2021-11-06 18:15:37,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:34" (1/1) ... [2021-11-06 18:15:37,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:34" (1/1) ... [2021-11-06 18:15:38,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:15:38,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:15:38,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:15:38,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:15:38,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:34" (1/1) ... [2021-11-06 18:15:38,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:15:38,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:15:38,617 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 18:15:38,668 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 18:15:38,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:15:38,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:15:38,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:15:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:15:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:15:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:15:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:15:38,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:15:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:15:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:15:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:15:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:15:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:15:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:15:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:18:17,738 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#6: ldv_switch_1_#res := 0; [2021-11-06 18:18:17,739 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#7: ldv_switch_1_#res := 0; [2021-11-06 18:18:17,739 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-06 18:18:17,739 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#5: ldv_switch_1_#res := 0; [2021-11-06 18:18:17,739 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:18:17,739 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:18:17,740 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:18:17,740 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-06 18:18:17,741 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-06 18:18:17,741 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:18:17,741 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#8: ldv_switch_1_#res := 0; [2021-11-06 18:18:17,742 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 18:18:17,743 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:18:17,744 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:18:17,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:18:17,790 INFO L299 CfgBuilder]: Removed 10743 assume(true) statements. [2021-11-06 18:18:17,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:18:17 BoogieIcfgContainer [2021-11-06 18:18:17,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:18:17,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:18:17,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:18:17,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:18:17,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:15:31" (1/3) ... [2021-11-06 18:18:17,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3962e1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:18:17, skipping insertion in model container [2021-11-06 18:18:17,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:34" (2/3) ... [2021-11-06 18:18:17,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3962e1e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:18:17, skipping insertion in model container [2021-11-06 18:18:17,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:18:17" (3/3) ... [2021-11-06 18:18:17,808 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-asix.cil.i [2021-11-06 18:18:17,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:18:17,815 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-06 18:18:17,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:18:17,885 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 18:18:17,885 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-06 18:18:18,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 10276 states, 10256 states have (on average 1.3043096723868954) internal successors, (13377), 10275 states have internal predecessors, (13377), 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 18:18:18,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 18:18:18,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:18,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:18:18,152 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:18:18,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:18,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1813481632, now seen corresponding path program 1 times [2021-11-06 18:18:18,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:18,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116300566] [2021-11-06 18:18:18,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:18,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:19,116 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 18:18:19,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:19,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116300566] [2021-11-06 18:18:19,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116300566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:19,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:19,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:18:19,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143264111] [2021-11-06 18:18:19,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:19,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:19,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:19,150 INFO L87 Difference]: Start difference. First operand has 10276 states, 10256 states have (on average 1.3043096723868954) internal successors, (13377), 10275 states have internal predecessors, (13377), 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 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:22,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:22,222 INFO L93 Difference]: Finished difference Result 28517 states and 37127 transitions. [2021-11-06 18:18:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:22,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-06 18:18:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:22,289 INFO L225 Difference]: With dead ends: 28517 [2021-11-06 18:18:22,290 INFO L226 Difference]: Without dead ends: 18162 [2021-11-06 18:18:22,312 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 18:18:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18162 states. [2021-11-06 18:18:22,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18162 to 18124. [2021-11-06 18:18:22,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18124 states, 18104 states have (on average 1.2887207247017234) internal successors, (23331), 18123 states have internal predecessors, (23331), 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 18:18:22,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18124 states to 18124 states and 23331 transitions. [2021-11-06 18:18:22,998 INFO L78 Accepts]: Start accepts. Automaton has 18124 states and 23331 transitions. Word has length 140 [2021-11-06 18:18:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:23,001 INFO L470 AbstractCegarLoop]: Abstraction has 18124 states and 23331 transitions. [2021-11-06 18:18:23,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:23,002 INFO L276 IsEmpty]: Start isEmpty. Operand 18124 states and 23331 transitions. [2021-11-06 18:18:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-06 18:18:23,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:23,010 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, 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 18:18:23,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:18:23,011 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:18:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:23,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1060683067, now seen corresponding path program 1 times [2021-11-06 18:18:23,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:23,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748587791] [2021-11-06 18:18:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:23,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:23,689 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 18:18:23,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:23,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748587791] [2021-11-06 18:18:23,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748587791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:23,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:23,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:18:23,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422401782] [2021-11-06 18:18:23,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:23,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:23,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:23,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:23,691 INFO L87 Difference]: Start difference. First operand 18124 states and 23331 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 18:18:27,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:27,137 INFO L93 Difference]: Finished difference Result 52936 states and 68169 transitions. [2021-11-06 18:18:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:27,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-06 18:18:27,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:27,247 INFO L225 Difference]: With dead ends: 52936 [2021-11-06 18:18:27,248 INFO L226 Difference]: Without dead ends: 35120 [2021-11-06 18:18:27,290 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 18:18:27,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35120 states. [2021-11-06 18:18:27,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35120 to 35072. [2021-11-06 18:18:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35072 states, 35052 states have (on average 1.2879150975693257) internal successors, (45144), 35071 states have internal predecessors, (45144), 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 18:18:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35072 states to 35072 states and 45144 transitions. [2021-11-06 18:18:27,978 INFO L78 Accepts]: Start accepts. Automaton has 35072 states and 45144 transitions. Word has length 143 [2021-11-06 18:18:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:27,980 INFO L470 AbstractCegarLoop]: Abstraction has 35072 states and 45144 transitions. [2021-11-06 18:18:27,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 18:18:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 35072 states and 45144 transitions. [2021-11-06 18:18:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-06 18:18:27,988 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:27,989 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, 1, 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 18:18:27,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:18:27,989 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:18:27,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:27,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1869724388, now seen corresponding path program 1 times [2021-11-06 18:18:27,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:27,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398289564] [2021-11-06 18:18:27,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:27,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:28,602 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 18:18:28,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:28,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398289564] [2021-11-06 18:18:28,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398289564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:28,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:28,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:18:28,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503737322] [2021-11-06 18:18:28,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:28,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:28,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:28,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:28,603 INFO L87 Difference]: Start difference. First operand 35072 states and 45144 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:32,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:32,440 INFO L93 Difference]: Finished difference Result 103088 states and 132642 transitions. [2021-11-06 18:18:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:32,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-06 18:18:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:32,606 INFO L225 Difference]: With dead ends: 103088 [2021-11-06 18:18:32,606 INFO L226 Difference]: Without dead ends: 68324 [2021-11-06 18:18:32,684 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 18:18:32,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68324 states. [2021-11-06 18:18:33,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68324 to 68272. [2021-11-06 18:18:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68272 states, 68252 states have (on average 1.2862626736212859) internal successors, (87790), 68271 states have internal predecessors, (87790), 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 18:18:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68272 states to 68272 states and 87790 transitions. [2021-11-06 18:18:34,100 INFO L78 Accepts]: Start accepts. Automaton has 68272 states and 87790 transitions. Word has length 144 [2021-11-06 18:18:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:34,100 INFO L470 AbstractCegarLoop]: Abstraction has 68272 states and 87790 transitions. [2021-11-06 18:18:34,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand 68272 states and 87790 transitions. [2021-11-06 18:18:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 18:18:34,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:34,106 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, 1, 1, 1, 1, 1, 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 18:18:34,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:18:34,106 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:18:34,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:34,106 INFO L85 PathProgramCache]: Analyzing trace with hash 752824777, now seen corresponding path program 1 times [2021-11-06 18:18:34,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:34,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175261472] [2021-11-06 18:18:34,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:34,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:34,651 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 18:18:34,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:34,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175261472] [2021-11-06 18:18:34,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175261472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:34,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:34,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:18:34,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435892192] [2021-11-06 18:18:34,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:34,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:34,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:34,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:34,652 INFO L87 Difference]: Start difference. First operand 68272 states and 87790 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 18:18:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:39,319 INFO L93 Difference]: Finished difference Result 189316 states and 243232 transitions. [2021-11-06 18:18:39,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:39,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 148 [2021-11-06 18:18:39,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:39,653 INFO L225 Difference]: With dead ends: 189316 [2021-11-06 18:18:39,654 INFO L226 Difference]: Without dead ends: 121352 [2021-11-06 18:18:39,807 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 18:18:39,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121352 states. [2021-11-06 18:18:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121352 to 121284. [2021-11-06 18:18:42,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121284 states, 121264 states have (on average 1.2835961208602717) internal successors, (155654), 121283 states have internal predecessors, (155654), 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 18:18:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121284 states to 121284 states and 155654 transitions. [2021-11-06 18:18:42,623 INFO L78 Accepts]: Start accepts. Automaton has 121284 states and 155654 transitions. Word has length 148 [2021-11-06 18:18:42,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:42,623 INFO L470 AbstractCegarLoop]: Abstraction has 121284 states and 155654 transitions. [2021-11-06 18:18:42,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 18:18:42,623 INFO L276 IsEmpty]: Start isEmpty. Operand 121284 states and 155654 transitions. [2021-11-06 18:18:42,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-06 18:18:42,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:42,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:42,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:18:42,630 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:18:42,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:42,631 INFO L85 PathProgramCache]: Analyzing trace with hash -990539591, now seen corresponding path program 1 times [2021-11-06 18:18:42,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:42,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149713981] [2021-11-06 18:18:42,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:42,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:43,035 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 18:18:43,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:43,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149713981] [2021-11-06 18:18:43,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149713981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:43,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:43,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:18:43,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445457063] [2021-11-06 18:18:43,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:43,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:43,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:43,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:43,037 INFO L87 Difference]: Start difference. First operand 121284 states and 155654 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 18:18:49,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:49,275 INFO L93 Difference]: Finished difference Result 333398 states and 428515 transitions. [2021-11-06 18:18:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:49,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2021-11-06 18:18:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:49,839 INFO L225 Difference]: With dead ends: 333398 [2021-11-06 18:18:49,839 INFO L226 Difference]: Without dead ends: 212422 [2021-11-06 18:18:50,108 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 18:18:50,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212422 states. [2021-11-06 18:18:54,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212422 to 212356. [2021-11-06 18:18:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212356 states, 212336 states have (on average 1.285688719764901) internal successors, (272998), 212355 states have internal predecessors, (272998), 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 18:18:55,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212356 states to 212356 states and 272998 transitions. [2021-11-06 18:18:55,373 INFO L78 Accepts]: Start accepts. Automaton has 212356 states and 272998 transitions. Word has length 154 [2021-11-06 18:18:55,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:55,374 INFO L470 AbstractCegarLoop]: Abstraction has 212356 states and 272998 transitions. [2021-11-06 18:18:55,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 18:18:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 212356 states and 272998 transitions. [2021-11-06 18:18:55,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-06 18:18:55,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:55,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:55,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:18:55,380 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-06 18:18:55,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:55,381 INFO L85 PathProgramCache]: Analyzing trace with hash 291356204, now seen corresponding path program 1 times [2021-11-06 18:18:55,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:55,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566662483] [2021-11-06 18:18:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:55,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:55,726 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 18:18:55,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:55,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566662483] [2021-11-06 18:18:55,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566662483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:55,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:55,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:18:55,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107065211] [2021-11-06 18:18:55,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:55,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:55,727 INFO L87 Difference]: Start difference. First operand 212356 states and 272998 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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)