./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.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 006aa960ed1622b337a2cda4a1ad6a685b212b2d57c6c6998da1e861381a253d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:01:57,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:01:57,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:01:58,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:01:58,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:01:58,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:01:58,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:01:58,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:01:58,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:01:58,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:01:58,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:01:58,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:01:58,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:01:58,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:01:58,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:01:58,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:01:58,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:01:58,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:01:58,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:01:58,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:01:58,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:01:58,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:01:58,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:01:58,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:01:58,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:01:58,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:01:58,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:01:58,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:01:58,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:01:58,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:01:58,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:01:58,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:01:58,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:01:58,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:01:58,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:01:58,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:01:58,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:01:58,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:01:58,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:01:58,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:01:58,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:01:58,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:01:58,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:01:58,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:01:58,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:01:58,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:01:58,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:01:58,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:01:58,085 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:01:58,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:01:58,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:01:58,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:01:58,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:01:58,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:01:58,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:01:58,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:01:58,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:01:58,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:01:58,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:01:58,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:01:58,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:01:58,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:01:58,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:01:58,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:01:58,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:01:58,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:01:58,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:01:58,089 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:01:58,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:01:58,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:01:58,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:01:58,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 006aa960ed1622b337a2cda4a1ad6a685b212b2d57c6c6998da1e861381a253d [2021-11-06 14:01:58,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:01:58,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:01:58,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:01:58,341 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:01:58,342 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:01:58,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-06 14:01:58,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cd953c2d/1b75aa8f76934907b681f3be0722ffeb/FLAG7171501db [2021-11-06 14:01:59,057 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:01:59,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-06 14:01:59,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cd953c2d/1b75aa8f76934907b681f3be0722ffeb/FLAG7171501db [2021-11-06 14:01:59,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cd953c2d/1b75aa8f76934907b681f3be0722ffeb [2021-11-06 14:01:59,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:01:59,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:01:59,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:01:59,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:01:59,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:01:59,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:01:59" (1/1) ... [2021-11-06 14:01:59,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171063c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:01:59, skipping insertion in model container [2021-11-06 14:01:59,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:01:59" (1/1) ... [2021-11-06 14:01:59,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:01:59,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:02:00,544 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2021-11-06 14:02:01,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:02:01,618 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:02:01,731 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[171620,171633] [2021-11-06 14:02:02,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:02:02,233 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:02:02,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:02:02 WrapperNode [2021-11-06 14:02:02,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:02:02,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:02:02,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:02:02,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:02:02,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:02:02" (1/1) ... [2021-11-06 14:02:02,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:02:02" (1/1) ... [2021-11-06 14:02:02,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:02:02,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:02:02,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:02:02,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:02:02,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:02:02" (1/1) ... [2021-11-06 14:02:02,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:02:02" (1/1) ... [2021-11-06 14:02:02,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:02:02" (1/1) ... [2021-11-06 14:02:02,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:02:02" (1/1) ... [2021-11-06 14:02:03,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:02:02" (1/1) ... [2021-11-06 14:02:03,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:02:02" (1/1) ... [2021-11-06 14:02:03,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:02:02" (1/1) ... [2021-11-06 14:02:03,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:02:03,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:02:03,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:02:03,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:02:03,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:02:02" (1/1) ... [2021-11-06 14:02:03,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:02:03,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:02:03,490 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 14:02:03,509 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 14:02:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-06 14:02:03,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-06 14:02:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure start_cbsend [2021-11-06 14:02:03,515 INFO L138 BoogieDeclarations]: Found implementation of procedure start_cbsend [2021-11-06 14:02:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2021-11-06 14:02:03,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2021-11-06 14:02:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_20 [2021-11-06 14:02:03,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_20 [2021-11-06 14:02:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:02:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 14:02:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:02:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-06 14:02:03,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-06 14:02:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-06 14:02:03,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-06 14:02:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_18 [2021-11-06 14:02:03,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_18 [2021-11-06 14:02:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure req_submit [2021-11-06 14:02:03,517 INFO L138 BoogieDeclarations]: Found implementation of procedure req_submit [2021-11-06 14:02:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:02:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure read_int_callback [2021-11-06 14:02:03,517 INFO L138 BoogieDeclarations]: Found implementation of procedure read_int_callback [2021-11-06 14:02:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:02:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure read_ctrl_callback [2021-11-06 14:02:03,517 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ctrl_callback [2021-11-06 14:02:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-11-06 14:02:03,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-11-06 14:02:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-11-06 14:02:03,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-11-06 14:02:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure int_in_work [2021-11-06 14:02:03,518 INFO L138 BoogieDeclarations]: Found implementation of procedure int_in_work [2021-11-06 14:02:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:02:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure atwrite_submit [2021-11-06 14:02:03,518 INFO L138 BoogieDeclarations]: Found implementation of procedure atwrite_submit [2021-11-06 14:02:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:02:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:02:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure error_reset [2021-11-06 14:02:03,519 INFO L138 BoogieDeclarations]: Found implementation of procedure error_reset [2021-11-06 14:02:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure write_command_callback [2021-11-06 14:02:03,519 INFO L138 BoogieDeclarations]: Found implementation of procedure write_command_callback [2021-11-06 14:02:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:02:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 14:02:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:02:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:02:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure write_ctrl_callback [2021-11-06 14:02:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ctrl_callback [2021-11-06 14:02:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure read_iso_callback [2021-11-06 14:02:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure read_iso_callback [2021-11-06 14:02:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:02:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure atread_submit [2021-11-06 14:02:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure atread_submit [2021-11-06 14:02:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:02:03,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:02:23,567 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:02:23,568 INFO L299 CfgBuilder]: Removed 2883 assume(true) statements. [2021-11-06 14:02:23,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:02:23 BoogieIcfgContainer [2021-11-06 14:02:23,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:02:23,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:02:23,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:02:23,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:02:23,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:01:59" (1/3) ... [2021-11-06 14:02:23,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d94b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:02:23, skipping insertion in model container [2021-11-06 14:02:23,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:02:02" (2/3) ... [2021-11-06 14:02:23,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d94b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:02:23, skipping insertion in model container [2021-11-06 14:02:23,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:02:23" (3/3) ... [2021-11-06 14:02:23,578 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-06 14:02:23,581 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:02:23,582 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 14:02:23,621 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:02:23,625 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 14:02:23,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 14:02:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 3647 states, 3536 states have (on average 1.529128959276018) internal successors, (5407), 3574 states have internal predecessors, (5407), 85 states have call successors, (85), 20 states have call predecessors, (85), 20 states have return successors, (85), 64 states have call predecessors, (85), 85 states have call successors, (85) [2021-11-06 14:02:23,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-06 14:02:23,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:23,679 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] [2021-11-06 14:02:23,680 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:23,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:23,683 INFO L85 PathProgramCache]: Analyzing trace with hash 431961628, now seen corresponding path program 1 times [2021-11-06 14:02:23,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:23,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624888162] [2021-11-06 14:02:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:23,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:24,401 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 14:02:24,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:24,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624888162] [2021-11-06 14:02:24,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624888162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:02:24,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:02:24,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:02:24,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185379508] [2021-11-06 14:02:24,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:02:24,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:02:24,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:02:24,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:02:24,427 INFO L87 Difference]: Start difference. First operand has 3647 states, 3536 states have (on average 1.529128959276018) internal successors, (5407), 3574 states have internal predecessors, (5407), 85 states have call successors, (85), 20 states have call predecessors, (85), 20 states have return successors, (85), 64 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 14:02:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:02:27,026 INFO L93 Difference]: Finished difference Result 10822 states and 16745 transitions. [2021-11-06 14:02:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:02:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-11-06 14:02:27,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:02:27,082 INFO L225 Difference]: With dead ends: 10822 [2021-11-06 14:02:27,082 INFO L226 Difference]: Without dead ends: 7156 [2021-11-06 14:02:27,105 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 14:02:27,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7156 states. [2021-11-06 14:02:27,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7156 to 7156. [2021-11-06 14:02:27,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7156 states, 6941 states have (on average 1.5170724679441003) internal successors, (10530), 7011 states have internal predecessors, (10530), 170 states have call successors, (170), 40 states have call predecessors, (170), 40 states have return successors, (170), 128 states have call predecessors, (170), 170 states have call successors, (170) [2021-11-06 14:02:27,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7156 states to 7156 states and 10870 transitions. [2021-11-06 14:02:27,334 INFO L78 Accepts]: Start accepts. Automaton has 7156 states and 10870 transitions. Word has length 36 [2021-11-06 14:02:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:02:27,335 INFO L470 AbstractCegarLoop]: Abstraction has 7156 states and 10870 transitions. [2021-11-06 14:02:27,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 14:02:27,335 INFO L276 IsEmpty]: Start isEmpty. Operand 7156 states and 10870 transitions. [2021-11-06 14:02:27,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 14:02:27,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:27,339 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] [2021-11-06 14:02:27,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:02:27,339 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1223951380, now seen corresponding path program 1 times [2021-11-06 14:02:27,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:27,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711886257] [2021-11-06 14:02:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:27,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:27,692 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 14:02:27,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:27,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711886257] [2021-11-06 14:02:27,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711886257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:02:27,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:02:27,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:02:27,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933099984] [2021-11-06 14:02:27,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:02:27,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:02:27,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:02:27,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:02:27,702 INFO L87 Difference]: Start difference. First operand 7156 states and 10870 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 14:02:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:02:28,191 INFO L93 Difference]: Finished difference Result 21389 states and 32516 transitions. [2021-11-06 14:02:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:02:28,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-11-06 14:02:28,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:02:28,270 INFO L225 Difference]: With dead ends: 21389 [2021-11-06 14:02:28,270 INFO L226 Difference]: Without dead ends: 14267 [2021-11-06 14:02:28,293 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 14:02:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14267 states. [2021-11-06 14:02:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14267 to 7157. [2021-11-06 14:02:28,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7157 states, 6942 states have (on average 1.5169979832901181) internal successors, (10531), 7012 states have internal predecessors, (10531), 170 states have call successors, (170), 40 states have call predecessors, (170), 40 states have return successors, (170), 128 states have call predecessors, (170), 170 states have call successors, (170) [2021-11-06 14:02:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7157 states to 7157 states and 10871 transitions. [2021-11-06 14:02:28,793 INFO L78 Accepts]: Start accepts. Automaton has 7157 states and 10871 transitions. Word has length 39 [2021-11-06 14:02:28,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:02:28,794 INFO L470 AbstractCegarLoop]: Abstraction has 7157 states and 10871 transitions. [2021-11-06 14:02:28,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 14:02:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 7157 states and 10871 transitions. [2021-11-06 14:02:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 14:02:28,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:28,798 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] [2021-11-06 14:02:28,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:02:28,799 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:28,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:28,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1438559663, now seen corresponding path program 1 times [2021-11-06 14:02:28,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:28,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820832462] [2021-11-06 14:02:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:28,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:29,493 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 14:02:29,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:29,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820832462] [2021-11-06 14:02:29,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820832462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:02:29,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:02:29,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:02:29,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695538765] [2021-11-06 14:02:29,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:02:29,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:02:29,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:02:29,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:02:29,498 INFO L87 Difference]: Start difference. First operand 7157 states and 10871 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 14:02:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:02:30,037 INFO L93 Difference]: Finished difference Result 21401 states and 33042 transitions. [2021-11-06 14:02:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:02:30,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 39 [2021-11-06 14:02:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:02:30,101 INFO L225 Difference]: With dead ends: 21401 [2021-11-06 14:02:30,101 INFO L226 Difference]: Without dead ends: 14278 [2021-11-06 14:02:30,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:02:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14278 states. [2021-11-06 14:02:30,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14278 to 14266. [2021-11-06 14:02:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14266 states, 13841 states have (on average 1.513546709052814) internal successors, (20949), 13977 states have internal predecessors, (20949), 340 states have call successors, (340), 80 states have call predecessors, (340), 80 states have return successors, (510), 256 states have call predecessors, (510), 340 states have call successors, (510) [2021-11-06 14:02:30,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14266 states to 14266 states and 21799 transitions. [2021-11-06 14:02:30,610 INFO L78 Accepts]: Start accepts. Automaton has 14266 states and 21799 transitions. Word has length 39 [2021-11-06 14:02:30,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:02:30,610 INFO L470 AbstractCegarLoop]: Abstraction has 14266 states and 21799 transitions. [2021-11-06 14:02:30,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 14:02:30,611 INFO L276 IsEmpty]: Start isEmpty. Operand 14266 states and 21799 transitions. [2021-11-06 14:02:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 14:02:30,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:30,614 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] [2021-11-06 14:02:30,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:02:30,614 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:30,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1645686712, now seen corresponding path program 1 times [2021-11-06 14:02:30,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:30,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891510743] [2021-11-06 14:02:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:30,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:31,018 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 14:02:31,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:31,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891510743] [2021-11-06 14:02:31,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891510743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:02:31,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:02:31,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:02:31,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950671747] [2021-11-06 14:02:31,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:02:31,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:02:31,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:02:31,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:02:31,021 INFO L87 Difference]: Start difference. First operand 14266 states and 21799 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 14:02:31,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:02:31,607 INFO L93 Difference]: Finished difference Result 42712 states and 66814 transitions. [2021-11-06 14:02:31,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:02:31,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 40 [2021-11-06 14:02:31,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:02:31,743 INFO L225 Difference]: With dead ends: 42712 [2021-11-06 14:02:31,744 INFO L226 Difference]: Without dead ends: 28480 [2021-11-06 14:02:31,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:02:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28480 states. [2021-11-06 14:02:32,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28480 to 28469. [2021-11-06 14:02:32,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28469 states, 27624 states have (on average 1.5131407471763685) internal successors, (41799), 27892 states have internal predecessors, (41799), 680 states have call successors, (680), 160 states have call predecessors, (680), 160 states have return successors, (1530), 512 states have call predecessors, (1530), 680 states have call successors, (1530) [2021-11-06 14:02:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28469 states to 28469 states and 44009 transitions. [2021-11-06 14:02:32,832 INFO L78 Accepts]: Start accepts. Automaton has 28469 states and 44009 transitions. Word has length 40 [2021-11-06 14:02:32,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:02:32,833 INFO L470 AbstractCegarLoop]: Abstraction has 28469 states and 44009 transitions. [2021-11-06 14:02:32,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 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 14:02:32,833 INFO L276 IsEmpty]: Start isEmpty. Operand 28469 states and 44009 transitions. [2021-11-06 14:02:32,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 14:02:32,836 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:32,836 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] [2021-11-06 14:02:32,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:02:32,837 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:32,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:32,837 INFO L85 PathProgramCache]: Analyzing trace with hash -523309351, now seen corresponding path program 1 times [2021-11-06 14:02:32,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:32,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159081852] [2021-11-06 14:02:32,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:32,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:33,159 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 14:02:33,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:33,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159081852] [2021-11-06 14:02:33,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159081852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:02:33,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:02:33,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:02:33,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115641172] [2021-11-06 14:02:33,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:02:33,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:02:33,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:02:33,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:02:33,164 INFO L87 Difference]: Start difference. First operand 28469 states and 44009 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 14:02:33,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:02:33,572 INFO L93 Difference]: Finished difference Result 28474 states and 44013 transitions. [2021-11-06 14:02:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:02:33,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 41 [2021-11-06 14:02:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:02:33,678 INFO L225 Difference]: With dead ends: 28474 [2021-11-06 14:02:33,678 INFO L226 Difference]: Without dead ends: 28472 [2021-11-06 14:02:33,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:02:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28472 states. [2021-11-06 14:02:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28472 to 28470. [2021-11-06 14:02:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28470 states, 27625 states have (on average 1.5131221719457013) internal successors, (41800), 27893 states have internal predecessors, (41800), 680 states have call successors, (680), 160 states have call predecessors, (680), 160 states have return successors, (1530), 512 states have call predecessors, (1530), 680 states have call successors, (1530) [2021-11-06 14:02:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28470 states to 28470 states and 44010 transitions. [2021-11-06 14:02:34,673 INFO L78 Accepts]: Start accepts. Automaton has 28470 states and 44010 transitions. Word has length 41 [2021-11-06 14:02:34,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:02:34,673 INFO L470 AbstractCegarLoop]: Abstraction has 28470 states and 44010 transitions. [2021-11-06 14:02:34,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 14:02:34,674 INFO L276 IsEmpty]: Start isEmpty. Operand 28470 states and 44010 transitions. [2021-11-06 14:02:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 14:02:34,676 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:34,676 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] [2021-11-06 14:02:34,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:02:34,677 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:34,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:34,677 INFO L85 PathProgramCache]: Analyzing trace with hash 957289442, now seen corresponding path program 1 times [2021-11-06 14:02:34,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:34,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100940042] [2021-11-06 14:02:34,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:34,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:34,976 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 14:02:34,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:34,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100940042] [2021-11-06 14:02:34,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100940042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:02:34,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:02:34,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:02:34,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854730525] [2021-11-06 14:02:34,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:02:34,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:02:34,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:02:34,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:02:34,978 INFO L87 Difference]: Start difference. First operand 28470 states and 44010 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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 14:02:35,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:02:35,316 INFO L93 Difference]: Finished difference Result 28470 states and 44010 transitions. [2021-11-06 14:02:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:02:35,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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 42 [2021-11-06 14:02:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:02:35,422 INFO L225 Difference]: With dead ends: 28470 [2021-11-06 14:02:35,422 INFO L226 Difference]: Without dead ends: 28468 [2021-11-06 14:02:35,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:02:35,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28468 states. [2021-11-06 14:02:36,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28468 to 28468. [2021-11-06 14:02:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28468 states, 27624 states have (on average 1.5131045467709239) internal successors, (41798), 27891 states have internal predecessors, (41798), 680 states have call successors, (680), 160 states have call predecessors, (680), 160 states have return successors, (1530), 512 states have call predecessors, (1530), 680 states have call successors, (1530) [2021-11-06 14:02:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28468 states to 28468 states and 44008 transitions. [2021-11-06 14:02:36,246 INFO L78 Accepts]: Start accepts. Automaton has 28468 states and 44008 transitions. Word has length 42 [2021-11-06 14:02:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:02:36,247 INFO L470 AbstractCegarLoop]: Abstraction has 28468 states and 44008 transitions. [2021-11-06 14:02:36,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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 14:02:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand 28468 states and 44008 transitions. [2021-11-06 14:02:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 14:02:36,251 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:36,251 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 14:02:36,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:02:36,251 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:36,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash -388788221, now seen corresponding path program 1 times [2021-11-06 14:02:36,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:36,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866603023] [2021-11-06 14:02:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:36,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:36,508 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 14:02:36,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:36,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866603023] [2021-11-06 14:02:36,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866603023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:02:36,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:02:36,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:02:36,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469874145] [2021-11-06 14:02:36,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:02:36,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:02:36,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:02:36,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:02:36,513 INFO L87 Difference]: Start difference. First operand 28468 states and 44008 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 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 14:02:37,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:02:37,032 INFO L93 Difference]: Finished difference Result 28468 states and 44008 transitions. [2021-11-06 14:02:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:02:37,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 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 14:02:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:02:37,115 INFO L225 Difference]: With dead ends: 28468 [2021-11-06 14:02:37,115 INFO L226 Difference]: Without dead ends: 28429 [2021-11-06 14:02:37,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:02:37,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28429 states. [2021-11-06 14:02:37,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28429 to 28429. [2021-11-06 14:02:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28429 states, 27586 states have (on average 1.5133401000507505) internal successors, (41747), 27852 states have internal predecessors, (41747), 680 states have call successors, (680), 160 states have call predecessors, (680), 160 states have return successors, (1530), 512 states have call predecessors, (1530), 680 states have call successors, (1530) [2021-11-06 14:02:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28429 states to 28429 states and 43957 transitions. [2021-11-06 14:02:37,914 INFO L78 Accepts]: Start accepts. Automaton has 28429 states and 43957 transitions. Word has length 43 [2021-11-06 14:02:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:02:37,915 INFO L470 AbstractCegarLoop]: Abstraction has 28429 states and 43957 transitions. [2021-11-06 14:02:37,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 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 14:02:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 28429 states and 43957 transitions. [2021-11-06 14:02:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 14:02:37,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:37,942 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:02:37,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:02:37,942 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:37,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:37,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1406530503, now seen corresponding path program 1 times [2021-11-06 14:02:37,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:37,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642458504] [2021-11-06 14:02:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:37,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:02:38,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:38,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642458504] [2021-11-06 14:02:38,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642458504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:02:38,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:02:38,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:02:38,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958281978] [2021-11-06 14:02:38,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:02:38,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:02:38,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:02:38,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:02:38,250 INFO L87 Difference]: Start difference. First operand 28429 states and 43957 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 14:02:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:02:39,299 INFO L93 Difference]: Finished difference Result 81002 states and 125728 transitions. [2021-11-06 14:02:39,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:02:39,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2021-11-06 14:02:39,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:02:39,489 INFO L225 Difference]: With dead ends: 81002 [2021-11-06 14:02:39,490 INFO L226 Difference]: Without dead ends: 52607 [2021-11-06 14:02:39,574 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 14:02:39,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52607 states. [2021-11-06 14:02:40,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52607 to 52505. [2021-11-06 14:02:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52505 states, 50862 states have (on average 1.5215288427509732) internal successors, (77388), 51392 states have internal predecessors, (77388), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-06 14:02:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52505 states to 52505 states and 81678 transitions. [2021-11-06 14:02:41,141 INFO L78 Accepts]: Start accepts. Automaton has 52505 states and 81678 transitions. Word has length 98 [2021-11-06 14:02:41,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:02:41,142 INFO L470 AbstractCegarLoop]: Abstraction has 52505 states and 81678 transitions. [2021-11-06 14:02:41,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 14:02:41,142 INFO L276 IsEmpty]: Start isEmpty. Operand 52505 states and 81678 transitions. [2021-11-06 14:02:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-06 14:02:41,196 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:41,197 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:02:41,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:02:41,197 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:41,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:41,198 INFO L85 PathProgramCache]: Analyzing trace with hash -459747046, now seen corresponding path program 1 times [2021-11-06 14:02:41,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:41,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589460648] [2021-11-06 14:02:41,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:41,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:02:41,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:41,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589460648] [2021-11-06 14:02:41,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589460648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:02:41,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:02:41,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:02:41,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326284622] [2021-11-06 14:02:41,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:02:41,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:02:41,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:02:41,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:02:41,478 INFO L87 Difference]: Start difference. First operand 52505 states and 81678 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:02:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:02:43,650 INFO L93 Difference]: Finished difference Result 120312 states and 186774 transitions. [2021-11-06 14:02:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:02:43,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-06 14:02:43,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:02:43,900 INFO L225 Difference]: With dead ends: 120312 [2021-11-06 14:02:43,900 INFO L226 Difference]: Without dead ends: 67841 [2021-11-06 14:02:44,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:02:44,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67841 states. [2021-11-06 14:02:45,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67841 to 52513. [2021-11-06 14:02:45,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52513 states, 50870 states have (on average 1.5213288775309612) internal successors, (77390), 51400 states have internal predecessors, (77390), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-06 14:02:45,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52513 states to 52513 states and 81680 transitions. [2021-11-06 14:02:45,933 INFO L78 Accepts]: Start accepts. Automaton has 52513 states and 81680 transitions. Word has length 120 [2021-11-06 14:02:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:02:45,934 INFO L470 AbstractCegarLoop]: Abstraction has 52513 states and 81680 transitions. [2021-11-06 14:02:45,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:02:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 52513 states and 81680 transitions. [2021-11-06 14:02:45,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-06 14:02:45,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:45,982 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:02:45,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 14:02:45,982 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:45,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:45,983 INFO L85 PathProgramCache]: Analyzing trace with hash 225860666, now seen corresponding path program 1 times [2021-11-06 14:02:45,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:45,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111577412] [2021-11-06 14:02:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:45,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:02:46,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:46,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111577412] [2021-11-06 14:02:46,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111577412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:02:46,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:02:46,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:02:46,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240923723] [2021-11-06 14:02:46,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:02:46,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:02:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:02:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:02:46,245 INFO L87 Difference]: Start difference. First operand 52513 states and 81680 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 14:02:47,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:02:47,638 INFO L93 Difference]: Finished difference Result 105280 states and 163704 transitions. [2021-11-06 14:02:47,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:02:47,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 121 [2021-11-06 14:02:47,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:02:47,814 INFO L225 Difference]: With dead ends: 105280 [2021-11-06 14:02:47,815 INFO L226 Difference]: Without dead ends: 52801 [2021-11-06 14:02:47,924 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 14:02:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52801 states. [2021-11-06 14:02:49,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52801 to 52537. [2021-11-06 14:02:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52537 states, 50894 states have (on average 1.5210830353283296) internal successors, (77414), 51424 states have internal predecessors, (77414), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-06 14:02:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52537 states to 52537 states and 81704 transitions. [2021-11-06 14:02:49,624 INFO L78 Accepts]: Start accepts. Automaton has 52537 states and 81704 transitions. Word has length 121 [2021-11-06 14:02:49,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:02:49,625 INFO L470 AbstractCegarLoop]: Abstraction has 52537 states and 81704 transitions. [2021-11-06 14:02:49,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 14:02:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 52537 states and 81704 transitions. [2021-11-06 14:02:49,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 14:02:49,662 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:49,662 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:02:49,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 14:02:49,663 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1615663599, now seen corresponding path program 1 times [2021-11-06 14:02:49,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:49,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068730399] [2021-11-06 14:02:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:49,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:02:49,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:49,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068730399] [2021-11-06 14:02:49,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068730399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:02:49,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:02:49,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:02:49,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689487096] [2021-11-06 14:02:49,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:02:49,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:02:49,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:02:49,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:02:49,944 INFO L87 Difference]: Start difference. First operand 52537 states and 81704 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 14:02:51,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:02:51,417 INFO L93 Difference]: Finished difference Result 105280 states and 163680 transitions. [2021-11-06 14:02:51,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:02:51,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 125 [2021-11-06 14:02:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:02:51,603 INFO L225 Difference]: With dead ends: 105280 [2021-11-06 14:02:51,603 INFO L226 Difference]: Without dead ends: 52777 [2021-11-06 14:02:51,826 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 14:02:51,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52777 states. [2021-11-06 14:02:53,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52777 to 52585. [2021-11-06 14:02:53,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52585 states, 50942 states have (on average 1.5205920458560716) internal successors, (77462), 51472 states have internal predecessors, (77462), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-06 14:02:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52585 states to 52585 states and 81752 transitions. [2021-11-06 14:02:53,434 INFO L78 Accepts]: Start accepts. Automaton has 52585 states and 81752 transitions. Word has length 125 [2021-11-06 14:02:53,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:02:53,434 INFO L470 AbstractCegarLoop]: Abstraction has 52585 states and 81752 transitions. [2021-11-06 14:02:53,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 14:02:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 52585 states and 81752 transitions. [2021-11-06 14:02:53,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 14:02:53,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:53,495 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:02:53,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 14:02:53,495 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:53,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:53,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2070297612, now seen corresponding path program 1 times [2021-11-06 14:02:53,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:53,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143780443] [2021-11-06 14:02:53,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:53,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:02:53,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:53,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143780443] [2021-11-06 14:02:53,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143780443] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:02:53,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282507740] [2021-11-06 14:02:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:53,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:02:53,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:02:53,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:02:53,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:02:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:55,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 6497 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:02:55,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:02:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:02:55,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282507740] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:02:55,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:02:55,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:02:55,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523852460] [2021-11-06 14:02:55,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:02:55,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:02:55,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:02:55,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:02:55,970 INFO L87 Difference]: Start difference. First operand 52585 states and 81752 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:02:57,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:02:57,507 INFO L93 Difference]: Finished difference Result 105568 states and 163992 transitions. [2021-11-06 14:02:57,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:02:57,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-06 14:02:57,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:02:57,675 INFO L225 Difference]: With dead ends: 105568 [2021-11-06 14:02:57,676 INFO L226 Difference]: Without dead ends: 53017 [2021-11-06 14:02:57,776 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:02:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53017 states. [2021-11-06 14:02:59,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53017 to 52825. [2021-11-06 14:02:59,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52825 states, 51182 states have (on average 1.5186198272830291) internal successors, (77726), 51712 states have internal predecessors, (77726), 1320 states have call successors, (1320), 320 states have call predecessors, (1320), 320 states have return successors, (2970), 984 states have call predecessors, (2970), 1320 states have call successors, (2970) [2021-11-06 14:02:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52825 states to 52825 states and 82016 transitions. [2021-11-06 14:02:59,338 INFO L78 Accepts]: Start accepts. Automaton has 52825 states and 82016 transitions. Word has length 135 [2021-11-06 14:02:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:02:59,339 INFO L470 AbstractCegarLoop]: Abstraction has 52825 states and 82016 transitions. [2021-11-06 14:02:59,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:02:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 52825 states and 82016 transitions. [2021-11-06 14:02:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-06 14:02:59,388 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:02:59,388 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:02:59,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 14:02:59,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-06 14:02:59,616 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:02:59,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:02:59,616 INFO L85 PathProgramCache]: Analyzing trace with hash -289899599, now seen corresponding path program 2 times [2021-11-06 14:02:59,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:02:59,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206597040] [2021-11-06 14:02:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:02:59,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:02:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:02:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-06 14:02:59,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:02:59,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206597040] [2021-11-06 14:02:59,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206597040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:02:59,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571164848] [2021-11-06 14:02:59,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:02:59,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:02:59,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:02:59,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:02:59,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process