./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-dec-tulip-tulip.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-dec-tulip-tulip.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 b5d2eeaaae10ee4c57bd86d22cba165fc727430aa2a7f660f053fb73e5712838 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:11:17,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:11:17,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:11:17,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:11:17,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:11:17,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:11:17,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:11:17,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:11:17,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:11:17,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:11:17,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:11:17,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:11:17,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:11:17,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:11:17,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:11:17,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:11:17,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:11:17,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:11:17,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:11:17,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:11:17,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:11:17,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:11:17,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:11:17,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:11:17,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:11:17,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:11:17,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:11:17,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:11:17,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:11:17,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:11:17,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:11:17,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:11:17,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:11:17,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:11:17,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:11:17,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:11:17,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:11:17,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:11:17,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:11:17,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:11:17,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:11:17,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:11:17,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:11:17,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:11:17,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:11:17,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:11:17,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:11:17,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:11:17,215 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:11:17,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:11:17,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:11:17,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:11:17,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:11:17,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:11:17,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:11:17,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:11:17,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:11:17,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:11:17,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:11:17,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:11:17,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:11:17,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:11:17,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:11:17,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:11:17,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:11:17,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:11:17,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:11:17,219 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:11:17,219 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:11:17,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:11:17,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:11:17,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d2eeaaae10ee4c57bd86d22cba165fc727430aa2a7f660f053fb73e5712838 [2021-11-06 19:11:17,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:11:17,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:11:17,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:11:17,482 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:11:17,483 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:11:17,484 INFO L432 ainManager$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-dec-tulip-tulip.cil.i [2021-11-06 19:11:17,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8eeb5382/0d7c93cccab446ed89f6cb82ce49aab7/FLAG53469854b [2021-11-06 19:11:18,346 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:11:18,347 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-dec-tulip-tulip.cil.i [2021-11-06 19:11:18,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8eeb5382/0d7c93cccab446ed89f6cb82ce49aab7/FLAG53469854b [2021-11-06 19:11:18,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8eeb5382/0d7c93cccab446ed89f6cb82ce49aab7 [2021-11-06 19:11:18,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:11:18,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:11:18,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:11:18,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:11:18,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:11:18,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:11:18" (1/1) ... [2021-11-06 19:11:18,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7445a021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:18, skipping insertion in model container [2021-11-06 19:11:18,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:11:18" (1/1) ... [2021-11-06 19:11:18,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:11:18,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:11:21,699 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-dec-tulip-tulip.cil.i[454757,454770] [2021-11-06 19:11:21,702 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-dec-tulip-tulip.cil.i[454904,454917] [2021-11-06 19:11:21,702 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-dec-tulip-tulip.cil.i[455043,455056] [2021-11-06 19:11:21,703 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-dec-tulip-tulip.cil.i[455201,455214] [2021-11-06 19:11:21,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:11:21,787 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:11:22,195 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-dec-tulip-tulip.cil.i[454757,454770] [2021-11-06 19:11:22,196 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-dec-tulip-tulip.cil.i[454904,454917] [2021-11-06 19:11:22,197 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-dec-tulip-tulip.cil.i[455043,455056] [2021-11-06 19:11:22,197 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-dec-tulip-tulip.cil.i[455201,455214] [2021-11-06 19:11:22,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:11:22,403 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:11:22,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:22 WrapperNode [2021-11-06 19:11:22,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:11:22,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:11:22,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:11:22,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:11:22,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:22" (1/1) ... [2021-11-06 19:11:22,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:22" (1/1) ... [2021-11-06 19:11:24,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:11:24,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:11:24,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:11:24,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:11:24,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:22" (1/1) ... [2021-11-06 19:11:24,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:22" (1/1) ... [2021-11-06 19:11:25,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:22" (1/1) ... [2021-11-06 19:11:25,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:22" (1/1) ... [2021-11-06 19:11:26,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:22" (1/1) ... [2021-11-06 19:11:27,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:22" (1/1) ... [2021-11-06 19:11:27,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:22" (1/1) ... [2021-11-06 19:11:27,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:11:27,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:11:27,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:11:27,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:11:27,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:22" (1/1) ... [2021-11-06 19:11:27,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:11:27,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:11:27,628 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 19:11:27,651 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 19:11:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:11:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:11:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:11:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:11:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:11:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:11:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:11:27,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:11:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:11:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:11:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:11:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:11:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:11:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:11:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:14:22,657 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:14:22,657 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:14:22,657 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 19:14:22,658 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-06 19:14:22,658 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-06 19:14:22,658 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0; [2021-11-06 19:14:22,658 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0; [2021-11-06 19:14:22,658 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0; [2021-11-06 19:14:22,658 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0; [2021-11-06 19:14:22,658 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#9: ldv_switch_2_#res := 0; [2021-11-06 19:14:22,659 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:14:22,660 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:14:22,660 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 19:14:22,662 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:14:22,663 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#10: ldv_switch_2_#res := 0; [2021-11-06 19:14:22,663 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:14:22,719 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:14:22,720 INFO L299 CfgBuilder]: Removed 16021 assume(true) statements. [2021-11-06 19:14:22,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:14:22 BoogieIcfgContainer [2021-11-06 19:14:22,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:14:22,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:14:22,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:14:22,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:14:22,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:11:18" (1/3) ... [2021-11-06 19:14:22,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b269648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:14:22, skipping insertion in model container [2021-11-06 19:14:22,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:22" (2/3) ... [2021-11-06 19:14:22,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b269648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:14:22, skipping insertion in model container [2021-11-06 19:14:22,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:14:22" (3/3) ... [2021-11-06 19:14:22,744 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-06 19:14:22,748 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:14:22,749 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-06 19:14:22,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:14:22,845 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 19:14:22,846 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-06 19:14:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 14905 states, 14901 states have (on average 1.35098315549292) internal successors, (20131), 14904 states have internal predecessors, (20131), 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 19:14:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 19:14:23,124 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:14:23,125 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] [2021-11-06 19:14:23,126 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 19:14:23,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:14:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash 461028898, now seen corresponding path program 1 times [2021-11-06 19:14:23,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:14:23,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761340636] [2021-11-06 19:14:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:14:23,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:14:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:14:24,129 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 19:14:24,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:14:24,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761340636] [2021-11-06 19:14:24,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761340636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:14:24,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:14:24,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:14:24,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146065928] [2021-11-06 19:14:24,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:14:24,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:14:24,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:14:24,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:14:24,197 INFO L87 Difference]: Start difference. First operand has 14905 states, 14901 states have (on average 1.35098315549292) internal successors, (20131), 14904 states have internal predecessors, (20131), 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 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:14:27,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:14:27,725 INFO L93 Difference]: Finished difference Result 44253 states and 59798 transitions. [2021-11-06 19:14:27,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:14:27,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-06 19:14:27,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:14:27,892 INFO L225 Difference]: With dead ends: 44253 [2021-11-06 19:14:27,892 INFO L226 Difference]: Without dead ends: 29066 [2021-11-06 19:14:27,942 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 19:14:28,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29066 states. [2021-11-06 19:14:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29066 to 29064. [2021-11-06 19:14:28,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29064 states, 29060 states have (on average 1.3374053682037164) internal successors, (38865), 29063 states have internal predecessors, (38865), 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 19:14:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29064 states to 29064 states and 38865 transitions. [2021-11-06 19:14:29,043 INFO L78 Accepts]: Start accepts. Automaton has 29064 states and 38865 transitions. Word has length 57 [2021-11-06 19:14:29,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:14:29,045 INFO L470 AbstractCegarLoop]: Abstraction has 29064 states and 38865 transitions. [2021-11-06 19:14:29,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:14:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand 29064 states and 38865 transitions. [2021-11-06 19:14:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 19:14:29,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:14:29,058 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] [2021-11-06 19:14:29,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:14:29,059 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:14:29,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:14:29,061 INFO L85 PathProgramCache]: Analyzing trace with hash 656236002, now seen corresponding path program 1 times [2021-11-06 19:14:29,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:14:29,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458639411] [2021-11-06 19:14:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:14:29,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:14:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:14:29,659 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 19:14:29,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:14:29,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458639411] [2021-11-06 19:14:29,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458639411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:14:29,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:14:29,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:14:29,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941570092] [2021-11-06 19:14:29,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:14:29,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:14:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:14:29,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:14:29,662 INFO L87 Difference]: Start difference. First operand 29064 states and 38865 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 19:14:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:14:33,597 INFO L93 Difference]: Finished difference Result 54695 states and 73172 transitions. [2021-11-06 19:14:33,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:14:33,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-11-06 19:14:33,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:14:33,668 INFO L225 Difference]: With dead ends: 54695 [2021-11-06 19:14:33,669 INFO L226 Difference]: Without dead ends: 25739 [2021-11-06 19:14:33,723 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 19:14:33,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25739 states. [2021-11-06 19:14:34,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25739 to 25717. [2021-11-06 19:14:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25717 states, 25713 states have (on average 1.3368723991755143) internal successors, (34375), 25716 states have internal predecessors, (34375), 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 19:14:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25717 states to 25717 states and 34375 transitions. [2021-11-06 19:14:34,473 INFO L78 Accepts]: Start accepts. Automaton has 25717 states and 34375 transitions. Word has length 73 [2021-11-06 19:14:34,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:14:34,474 INFO L470 AbstractCegarLoop]: Abstraction has 25717 states and 34375 transitions. [2021-11-06 19:14:34,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 19:14:34,474 INFO L276 IsEmpty]: Start isEmpty. Operand 25717 states and 34375 transitions. [2021-11-06 19:14:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 19:14:34,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:14:34,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:14:34,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:14:34,484 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:14:34,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:14:34,492 INFO L85 PathProgramCache]: Analyzing trace with hash -179454734, now seen corresponding path program 1 times [2021-11-06 19:14:34,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:14:34,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702691744] [2021-11-06 19:14:34,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:14:34,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:14:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:14:35,024 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 19:14:35,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:14:35,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702691744] [2021-11-06 19:14:35,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702691744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:14:35,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:14:35,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:14:35,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550637590] [2021-11-06 19:14:35,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:14:35,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:14:35,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:14:35,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:14:35,026 INFO L87 Difference]: Start difference. First operand 25717 states and 34375 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 19:14:38,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:14:38,386 INFO L93 Difference]: Finished difference Result 65766 states and 87969 transitions. [2021-11-06 19:14:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:14:38,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2021-11-06 19:14:38,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:14:38,505 INFO L225 Difference]: With dead ends: 65766 [2021-11-06 19:14:38,505 INFO L226 Difference]: Without dead ends: 45685 [2021-11-06 19:14:38,560 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 19:14:38,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45685 states. [2021-11-06 19:14:39,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45685 to 45683. [2021-11-06 19:14:39,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45683 states, 45679 states have (on average 1.3376168480045536) internal successors, (61101), 45682 states have internal predecessors, (61101), 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 19:14:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45683 states to 45683 states and 61101 transitions. [2021-11-06 19:14:39,851 INFO L78 Accepts]: Start accepts. Automaton has 45683 states and 61101 transitions. Word has length 86 [2021-11-06 19:14:39,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:14:39,854 INFO L470 AbstractCegarLoop]: Abstraction has 45683 states and 61101 transitions. [2021-11-06 19:14:39,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 19:14:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 45683 states and 61101 transitions. [2021-11-06 19:14:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 19:14:39,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:14:39,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:14:39,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:14:39,865 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 19:14:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:14:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1459318412, now seen corresponding path program 1 times [2021-11-06 19:14:39,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:14:39,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032358664] [2021-11-06 19:14:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:14:39,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:14:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:14:40,357 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 19:14:40,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:14:40,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032358664] [2021-11-06 19:14:40,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032358664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:14:40,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:14:40,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:14:40,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116157544] [2021-11-06 19:14:40,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:14:40,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:14:40,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:14:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:14:40,360 INFO L87 Difference]: Start difference. First operand 45683 states and 61101 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 19:14:43,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:14:43,687 INFO L93 Difference]: Finished difference Result 105700 states and 141425 transitions. [2021-11-06 19:14:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:14:43,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2021-11-06 19:14:43,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:14:43,850 INFO L225 Difference]: With dead ends: 105700 [2021-11-06 19:14:43,851 INFO L226 Difference]: Without dead ends: 65653 [2021-11-06 19:14:43,930 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 19:14:44,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65653 states. [2021-11-06 19:14:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65653 to 65644. [2021-11-06 19:14:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65644 states, 65640 states have (on average 1.3379341864716636) internal successors, (87822), 65643 states have internal predecessors, (87822), 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 19:14:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65644 states to 65644 states and 87822 transitions. [2021-11-06 19:14:45,686 INFO L78 Accepts]: Start accepts. Automaton has 65644 states and 87822 transitions. Word has length 86 [2021-11-06 19:14:45,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:14:45,686 INFO L470 AbstractCegarLoop]: Abstraction has 65644 states and 87822 transitions. [2021-11-06 19:14:45,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 19:14:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 65644 states and 87822 transitions. [2021-11-06 19:14:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 19:14:45,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:14:45,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:14:45,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:14:45,698 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:14:45,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:14:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash -782100417, now seen corresponding path program 1 times [2021-11-06 19:14:45,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:14:45,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065622592] [2021-11-06 19:14:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:14:45,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:14:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:14:46,304 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 19:14:46,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:14:46,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065622592] [2021-11-06 19:14:46,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065622592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:14:46,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:14:46,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 19:14:46,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285240957] [2021-11-06 19:14:46,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:14:46,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:14:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:14:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:14:46,306 INFO L87 Difference]: Start difference. First operand 65644 states and 87822 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 19:14:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:14:47,787 INFO L93 Difference]: Finished difference Result 65644 states and 87822 transitions. [2021-11-06 19:14:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:14:47,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 87 [2021-11-06 19:14:47,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:14:47,931 INFO L225 Difference]: With dead ends: 65644 [2021-11-06 19:14:47,934 INFO L226 Difference]: Without dead ends: 60088 [2021-11-06 19:14:47,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:14:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60088 states. [2021-11-06 19:14:49,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60088 to 60088. [2021-11-06 19:14:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60088 states, 60087 states have (on average 1.337893387920848) internal successors, (80390), 60087 states have internal predecessors, (80390), 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 19:14:49,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60088 states to 60088 states and 80390 transitions. [2021-11-06 19:14:49,314 INFO L78 Accepts]: Start accepts. Automaton has 60088 states and 80390 transitions. Word has length 87 [2021-11-06 19:14:49,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:14:49,314 INFO L470 AbstractCegarLoop]: Abstraction has 60088 states and 80390 transitions. [2021-11-06 19:14:49,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 19:14:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 60088 states and 80390 transitions. [2021-11-06 19:14:49,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 19:14:49,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:14:49,345 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:14:49,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:14:49,345 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 19:14:49,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:14:49,346 INFO L85 PathProgramCache]: Analyzing trace with hash 514365731, now seen corresponding path program 1 times [2021-11-06 19:14:49,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:14:49,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433758726] [2021-11-06 19:14:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:14:49,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:14:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:14:49,827 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 19:14:49,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:14:49,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433758726] [2021-11-06 19:14:49,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433758726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:14:49,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:14:49,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:14:49,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716100062] [2021-11-06 19:14:49,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:14:49,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:14:49,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:14:49,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:14:49,830 INFO L87 Difference]: Start difference. First operand 60088 states and 80390 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 19:14:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:14:54,052 INFO L93 Difference]: Finished difference Result 131154 states and 175533 transitions. [2021-11-06 19:14:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:14:54,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-11-06 19:14:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:14:54,225 INFO L225 Difference]: With dead ends: 131154 [2021-11-06 19:14:54,226 INFO L226 Difference]: Without dead ends: 76702 [2021-11-06 19:14:54,318 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 19:14:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76702 states.