./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.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-usb-dev_drivers-net-ethernet-sun-sunhme.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 536967bc2d119b5b01611d52124221c0068f635deed7f674213322a832d07143 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:16:07,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:16:07,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:16:07,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:16:07,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:16:07,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:16:07,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:16:07,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:16:07,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:16:07,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:16:07,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:16:07,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:16:07,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:16:07,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:16:07,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:16:07,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:16:07,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:16:07,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:16:07,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:16:07,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:16:07,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:16:07,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:16:07,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:16:07,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:16:07,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:16:07,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:16:07,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:16:07,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:16:07,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:16:07,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:16:07,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:16:07,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:16:07,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:16:07,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:16:07,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:16:07,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:16:07,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:16:07,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:16:07,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:16:07,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:16:07,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:16:07,794 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:16:07,811 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:16:07,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:16:07,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:16:07,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:16:07,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:16:07,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:16:07,813 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:16:07,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:16:07,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:16:07,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:16:07,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:16:07,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:16:07,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:16:07,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:16:07,815 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:16:07,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:16:07,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:16:07,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:16:07,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:16:07,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:16:07,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:16:07,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:16:07,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:16:07,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:16:07,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:16:07,816 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:16:07,816 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:16:07,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:16:07,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:16:07,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 536967bc2d119b5b01611d52124221c0068f635deed7f674213322a832d07143 [2021-11-06 19:16:07,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:16:07,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:16:07,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:16:07,999 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:16:08,000 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:16:08,000 INFO L432 ainManager$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-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-06 19:16:08,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ce1fe3a7/7dddcf7fca56447491b853c3c075eb6d/FLAG135992ebb [2021-11-06 19:16:08,759 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:16:08,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-06 19:16:08,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ce1fe3a7/7dddcf7fca56447491b853c3c075eb6d/FLAG135992ebb [2021-11-06 19:16:08,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ce1fe3a7/7dddcf7fca56447491b853c3c075eb6d [2021-11-06 19:16:08,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:16:08,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:16:08,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:16:08,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:16:08,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:16:08,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:16:08" (1/1) ... [2021-11-06 19:16:08,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b2caf31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:08, skipping insertion in model container [2021-11-06 19:16:08,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:16:08" (1/1) ... [2021-11-06 19:16:08,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:16:08,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:16:10,314 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-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314317,314330] [2021-11-06 19:16:10,316 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-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314464,314477] [2021-11-06 19:16:10,317 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-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314603,314616] [2021-11-06 19:16:10,317 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-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314761,314774] [2021-11-06 19:16:10,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:16:10,363 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:16:10,633 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-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314317,314330] [2021-11-06 19:16:10,633 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-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314464,314477] [2021-11-06 19:16:10,634 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-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314603,314616] [2021-11-06 19:16:10,634 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-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314761,314774] [2021-11-06 19:16:10,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:16:10,739 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:16:10,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:10 WrapperNode [2021-11-06 19:16:10,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:16:10,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:16:10,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:16:10,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:16:10,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:10" (1/1) ... [2021-11-06 19:16:10,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:10" (1/1) ... [2021-11-06 19:16:16,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:16:16,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:16:16,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:16:16,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:16:16,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:10" (1/1) ... [2021-11-06 19:16:16,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:10" (1/1) ... [2021-11-06 19:16:17,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:10" (1/1) ... [2021-11-06 19:16:17,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:10" (1/1) ... [2021-11-06 19:16:18,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:10" (1/1) ... [2021-11-06 19:16:18,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:10" (1/1) ... [2021-11-06 19:16:18,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:10" (1/1) ... [2021-11-06 19:16:19,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:16:19,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:16:19,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:16:19,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:16:19,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:10" (1/1) ... [2021-11-06 19:16:19,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:16:19,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:16:19,199 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 19:16:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-06 19:16:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:16:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:16:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:16:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:16:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:16:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:16:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:16:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:16:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:16:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:16:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:16:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:16:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:16:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:16:19,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:16:19,516 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 19:16:53,846 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:16:53,847 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:16:53,847 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:16:53,848 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:16:53,852 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:16:53,853 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:16:53,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:16:53,914 INFO L299 CfgBuilder]: Removed 36084 assume(true) statements. [2021-11-06 19:16:53,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:16:53 BoogieIcfgContainer [2021-11-06 19:16:53,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:16:53,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:16:53,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:16:53,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:16:53,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:16:08" (1/3) ... [2021-11-06 19:16:53,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644a31d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:16:53, skipping insertion in model container [2021-11-06 19:16:53,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:16:10" (2/3) ... [2021-11-06 19:16:53,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644a31d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:16:53, skipping insertion in model container [2021-11-06 19:16:53,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:16:53" (3/3) ... [2021-11-06 19:16:53,939 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-06 19:16:53,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:16:53,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-06 19:16:54,037 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:16:54,042 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 19:16:54,043 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-06 19:16:54,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 23101 states, 23097 states have (on average 1.2038792916829026) internal successors, (27806), 23100 states have internal predecessors, (27806), 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 19:16:54,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 19:16:54,288 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:16:54,289 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] [2021-11-06 19:16:54,289 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:16:54,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:16:54,294 INFO L85 PathProgramCache]: Analyzing trace with hash -201446684, now seen corresponding path program 1 times [2021-11-06 19:16:54,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:16:54,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982285792] [2021-11-06 19:16:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:16:54,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:16:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:16:54,793 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 19:16:54,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:16:54,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982285792] [2021-11-06 19:16:54,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982285792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:16:54,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:16:54,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:16:54,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335902352] [2021-11-06 19:16:54,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:16:54,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:16:54,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:16:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:16:54,845 INFO L87 Difference]: Start difference. First operand has 23101 states, 23097 states have (on average 1.2038792916829026) internal successors, (27806), 23100 states have internal predecessors, (27806), 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 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:16:58,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:16:58,353 INFO L93 Difference]: Finished difference Result 69048 states and 83093 transitions. [2021-11-06 19:16:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:16:58,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-06 19:16:58,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:16:58,518 INFO L225 Difference]: With dead ends: 69048 [2021-11-06 19:16:58,518 INFO L226 Difference]: Without dead ends: 45781 [2021-11-06 19:16:58,569 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 19:16:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45781 states. [2021-11-06 19:16:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45781 to 45779. [2021-11-06 19:16:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45779 states, 45775 states have (on average 1.1966357181867833) internal successors, (54776), 45778 states have internal predecessors, (54776), 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 19:16:59,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45779 states to 45779 states and 54776 transitions. [2021-11-06 19:16:59,780 INFO L78 Accepts]: Start accepts. Automaton has 45779 states and 54776 transitions. Word has length 43 [2021-11-06 19:16:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:16:59,781 INFO L470 AbstractCegarLoop]: Abstraction has 45779 states and 54776 transitions. [2021-11-06 19:16:59,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:16:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 45779 states and 54776 transitions. [2021-11-06 19:16:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 19:16:59,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:16:59,791 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:16:59,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:16:59,792 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:16:59,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:16:59,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1056831426, now seen corresponding path program 1 times [2021-11-06 19:16:59,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:16:59,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500398284] [2021-11-06 19:16:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:16:59,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:16:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:16:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:16:59,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:16:59,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500398284] [2021-11-06 19:16:59,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500398284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:16:59,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:16:59,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:16:59,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762156061] [2021-11-06 19:16:59,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:16:59,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:16:59,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:16:59,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:16:59,972 INFO L87 Difference]: Start difference. First operand 45779 states and 54776 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 19:17:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:17:00,951 INFO L93 Difference]: Finished difference Result 68671 states and 82167 transitions. [2021-11-06 19:17:00,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:17:00,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-06 19:17:00,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:17:01,054 INFO L225 Difference]: With dead ends: 68671 [2021-11-06 19:17:01,054 INFO L226 Difference]: Without dead ends: 45779 [2021-11-06 19:17:01,101 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 19:17:01,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45779 states. [2021-11-06 19:17:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45779 to 45779. [2021-11-06 19:17:01,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45779 states, 45775 states have (on average 1.1966138722009831) internal successors, (54775), 45778 states have internal predecessors, (54775), 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 19:17:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45779 states to 45779 states and 54775 transitions. [2021-11-06 19:17:02,064 INFO L78 Accepts]: Start accepts. Automaton has 45779 states and 54775 transitions. Word has length 67 [2021-11-06 19:17:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:17:02,065 INFO L470 AbstractCegarLoop]: Abstraction has 45779 states and 54775 transitions. [2021-11-06 19:17:02,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 19:17:02,066 INFO L276 IsEmpty]: Start isEmpty. Operand 45779 states and 54775 transitions. [2021-11-06 19:17:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 19:17:02,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:17:02,072 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] [2021-11-06 19:17:02,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:17:02,077 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:17:02,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:17:02,077 INFO L85 PathProgramCache]: Analyzing trace with hash 140076434, now seen corresponding path program 1 times [2021-11-06 19:17:02,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:17:02,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999678239] [2021-11-06 19:17:02,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:17:02,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:17:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:17:02,224 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 19:17:02,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:17:02,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999678239] [2021-11-06 19:17:02,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999678239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:17:02,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:17:02,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:17:02,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205767044] [2021-11-06 19:17:02,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:17:02,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:17:02,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:17:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:17:02,227 INFO L87 Difference]: Start difference. First operand 45779 states and 54775 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:17:05,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:17:05,471 INFO L93 Difference]: Finished difference Result 91093 states and 109008 transitions. [2021-11-06 19:17:05,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:17:05,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-06 19:17:05,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:17:05,570 INFO L225 Difference]: With dead ends: 91093 [2021-11-06 19:17:05,570 INFO L226 Difference]: Without dead ends: 45382 [2021-11-06 19:17:05,643 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 19:17:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45382 states. [2021-11-06 19:17:06,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45382 to 45360. [2021-11-06 19:17:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45360 states, 45356 states have (on average 1.196269512302672) internal successors, (54258), 45359 states have internal predecessors, (54258), 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 19:17:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45360 states to 45360 states and 54258 transitions. [2021-11-06 19:17:06,781 INFO L78 Accepts]: Start accepts. Automaton has 45360 states and 54258 transitions. Word has length 68 [2021-11-06 19:17:06,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:17:06,782 INFO L470 AbstractCegarLoop]: Abstraction has 45360 states and 54258 transitions. [2021-11-06 19:17:06,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:17:06,783 INFO L276 IsEmpty]: Start isEmpty. Operand 45360 states and 54258 transitions. [2021-11-06 19:17:06,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 19:17:06,788 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:17:06,788 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:17:06,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:17:06,789 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:17:06,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:17:06,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1734962658, now seen corresponding path program 1 times [2021-11-06 19:17:06,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:17:06,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493913169] [2021-11-06 19:17:06,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:17:06,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:17:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:17:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:17:06,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:17:06,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493913169] [2021-11-06 19:17:06,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493913169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:17:06,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:17:06,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:17:06,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613717654] [2021-11-06 19:17:06,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:17:06,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:17:06,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:17:06,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:17:06,932 INFO L87 Difference]: Start difference. First operand 45360 states and 54258 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 19:17:10,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:17:10,183 INFO L93 Difference]: Finished difference Result 113469 states and 135756 transitions. [2021-11-06 19:17:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:17:10,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2021-11-06 19:17:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:17:10,344 INFO L225 Difference]: With dead ends: 113469 [2021-11-06 19:17:10,345 INFO L226 Difference]: Without dead ends: 79360 [2021-11-06 19:17:10,410 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 19:17:10,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79360 states. [2021-11-06 19:17:12,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79360 to 79358. [2021-11-06 19:17:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79358 states, 79354 states have (on average 1.1963732137006327) internal successors, (94937), 79357 states have internal predecessors, (94937), 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 19:17:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79358 states to 79358 states and 94937 transitions. [2021-11-06 19:17:12,491 INFO L78 Accepts]: Start accepts. Automaton has 79358 states and 94937 transitions. Word has length 75 [2021-11-06 19:17:12,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:17:12,491 INFO L470 AbstractCegarLoop]: Abstraction has 79358 states and 94937 transitions. [2021-11-06 19:17:12,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 19:17:12,492 INFO L276 IsEmpty]: Start isEmpty. Operand 79358 states and 94937 transitions. [2021-11-06 19:17:12,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 19:17:12,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:17:12,498 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:17:12,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:17:12,499 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:17:12,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:17:12,499 INFO L85 PathProgramCache]: Analyzing trace with hash 713894304, now seen corresponding path program 1 times [2021-11-06 19:17:12,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:17:12,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830039069] [2021-11-06 19:17:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:17:12,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:17:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:17:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:17:12,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:17:12,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830039069] [2021-11-06 19:17:12,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830039069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:17:12,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:17:12,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:17:12,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363059786] [2021-11-06 19:17:12,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:17:12,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:17:12,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:17:12,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:17:12,623 INFO L87 Difference]: Start difference. First operand 79358 states and 94937 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 19:17:16,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:17:16,602 INFO L93 Difference]: Finished difference Result 181467 states and 217118 transitions. [2021-11-06 19:17:16,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:17:16,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2021-11-06 19:17:16,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:17:16,873 INFO L225 Difference]: With dead ends: 181467 [2021-11-06 19:17:16,874 INFO L226 Difference]: Without dead ends: 113360 [2021-11-06 19:17:17,000 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 19:17:17,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113360 states. [2021-11-06 19:17:19,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113360 to 113351. [2021-11-06 19:17:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113351 states, 113347 states have (on average 1.196423372475672) internal successors, (135611), 113350 states have internal predecessors, (135611), 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 19:17:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113351 states to 113351 states and 135611 transitions. [2021-11-06 19:17:19,713 INFO L78 Accepts]: Start accepts. Automaton has 113351 states and 135611 transitions. Word has length 75 [2021-11-06 19:17:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:17:19,713 INFO L470 AbstractCegarLoop]: Abstraction has 113351 states and 135611 transitions. [2021-11-06 19:17:19,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 19:17:19,714 INFO L276 IsEmpty]: Start isEmpty. Operand 113351 states and 135611 transitions. [2021-11-06 19:17:19,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 19:17:19,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:17:19,720 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:17:19,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:17:19,720 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:17:19,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:17:19,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2068466793, now seen corresponding path program 1 times [2021-11-06 19:17:19,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:17:19,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129804762] [2021-11-06 19:17:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:17:19,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:17:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:17:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:17:19,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:17:19,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129804762] [2021-11-06 19:17:19,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129804762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:17:19,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:17:19,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 19:17:19,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739261065] [2021-11-06 19:17:19,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:17:19,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:17:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:17:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:17:19,877 INFO L87 Difference]: Start difference. First operand 113351 states and 135611 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 19:17:21,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:17:21,514 INFO L93 Difference]: Finished difference Result 113351 states and 135611 transitions. [2021-11-06 19:17:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:17:21,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 75 [2021-11-06 19:17:21,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:17:21,824 INFO L225 Difference]: With dead ends: 113351 [2021-11-06 19:17:21,824 INFO L226 Difference]: Without dead ends: 102134 [2021-11-06 19:17:21,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:17:21,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102134 states. [2021-11-06 19:17:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102134 to 102134. [2021-11-06 19:17:23,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102134 states, 102133 states have (on average 1.1964203538523297) internal successors, (122194), 102133 states have internal predecessors, (122194), 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 19:17:24,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102134 states to 102134 states and 122194 transitions. [2021-11-06 19:17:24,349 INFO L78 Accepts]: Start accepts. Automaton has 102134 states and 122194 transitions. Word has length 75 [2021-11-06 19:17:24,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:17:24,350 INFO L470 AbstractCegarLoop]: Abstraction has 102134 states and 122194 transitions. [2021-11-06 19:17:24,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 19:17:24,350 INFO L276 IsEmpty]: Start isEmpty. Operand 102134 states and 122194 transitions. [2021-11-06 19:17:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 19:17:24,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:17:24,379 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] [2021-11-06 19:17:24,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:17:24,380 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:17:24,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:17:24,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1420995789, now seen corresponding path program 1 times [2021-11-06 19:17:24,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:17:24,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945377908] [2021-11-06 19:17:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:17:24,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:17:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:17:24,494 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 19:17:24,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:17:24,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945377908] [2021-11-06 19:17:24,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945377908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:17:24,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:17:24,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:17:24,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553356293] [2021-11-06 19:17:24,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:17:24,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:17:24,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:17:24,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:17:24,496 INFO L87 Difference]: Start difference. First operand 102134 states and 122194 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:17:29,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:17:29,242 INFO L93 Difference]: Finished difference Result 226591 states and 271132 transitions. [2021-11-06 19:17:29,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:17:29,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-06 19:17:29,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:17:29,717 INFO L225 Difference]: With dead ends: 226591 [2021-11-06 19:17:29,717 INFO L226 Difference]: Without dead ends: 135708 [2021-11-06 19:17:29,849 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 19:17:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135708 states.