./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.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 ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 04:12:08,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 04:12:08,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 04:12:08,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 04:12:08,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 04:12:09,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 04:12:09,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 04:12:09,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 04:12:09,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 04:12:09,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 04:12:09,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 04:12:09,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 04:12:09,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 04:12:09,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 04:12:09,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 04:12:09,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 04:12:09,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 04:12:09,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 04:12:09,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 04:12:09,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 04:12:09,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 04:12:09,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 04:12:09,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 04:12:09,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 04:12:09,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 04:12:09,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 04:12:09,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 04:12:09,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 04:12:09,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 04:12:09,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 04:12:09,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 04:12:09,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 04:12:09,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 04:12:09,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 04:12:09,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 04:12:09,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 04:12:09,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 04:12:09,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 04:12:09,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 04:12:09,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 04:12:09,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 04:12:09,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 04:12:09,093 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 04:12:09,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 04:12:09,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 04:12:09,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 04:12:09,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 04:12:09,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 04:12:09,096 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 04:12:09,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 04:12:09,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 04:12:09,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 04:12:09,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 04:12:09,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 04:12:09,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 04:12:09,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 04:12:09,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 04:12:09,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 04:12:09,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 04:12:09,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 04:12:09,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 04:12:09,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:12:09,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 04:12:09,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 04:12:09,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 04:12:09,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 04:12:09,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 04:12:09,100 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 04:12:09,100 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 04:12:09,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 04:12:09,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 04:12:09,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 [2021-11-04 04:12:09,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 04:12:09,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 04:12:09,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 04:12:09,314 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 04:12:09,315 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 04:12:09,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-04 04:12:09,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dfbc7142/524475d5928041ed854d8599eaece062/FLAG84dfa95d5 [2021-11-04 04:12:10,087 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 04:12:10,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-04 04:12:10,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dfbc7142/524475d5928041ed854d8599eaece062/FLAG84dfa95d5 [2021-11-04 04:12:10,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dfbc7142/524475d5928041ed854d8599eaece062 [2021-11-04 04:12:10,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 04:12:10,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 04:12:10,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 04:12:10,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 04:12:10,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 04:12:10,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:12:10" (1/1) ... [2021-11-04 04:12:10,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca904c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:10, skipping insertion in model container [2021-11-04 04:12:10,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:12:10" (1/1) ... [2021-11-04 04:12:10,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 04:12:10,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 04:12:11,895 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[198800,198813] [2021-11-04 04:12:12,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:12:12,717 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 04:12:12,833 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[198800,198813] [2021-11-04 04:12:12,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:12:13,096 INFO L208 MainTranslator]: Completed translation [2021-11-04 04:12:13,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:13 WrapperNode [2021-11-04 04:12:13,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 04:12:13,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 04:12:13,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 04:12:13,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 04:12:13,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:13" (1/1) ... [2021-11-04 04:12:13,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:13" (1/1) ... [2021-11-04 04:12:14,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 04:12:14,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 04:12:14,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 04:12:14,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 04:12:14,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:13" (1/1) ... [2021-11-04 04:12:14,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:13" (1/1) ... [2021-11-04 04:12:14,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:13" (1/1) ... [2021-11-04 04:12:14,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:13" (1/1) ... [2021-11-04 04:12:14,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:13" (1/1) ... [2021-11-04 04:12:15,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:13" (1/1) ... [2021-11-04 04:12:15,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:13" (1/1) ... [2021-11-04 04:12:15,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 04:12:15,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 04:12:15,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 04:12:15,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 04:12:15,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:13" (1/1) ... [2021-11-04 04:12:15,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:12:15,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:12:15,524 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) [2021-11-04 04:12:15,530 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 [2021-11-04 04:12:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-04 04:12:15,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-04 04:12:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-04 04:12:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 04:12:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 04:12:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2021-11-04 04:12:15,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2021-11-04 04:12:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2021-11-04 04:12:15,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2021-11-04 04:12:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2021-11-04 04:12:15,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2021-11-04 04:12:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2021-11-04 04:12:15,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2021-11-04 04:12:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 04:12:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 04:12:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2021-11-04 04:12:15,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2021-11-04 04:12:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 04:12:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 04:12:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2021-11-04 04:12:15,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2021-11-04 04:12:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 04:12:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2021-11-04 04:12:15,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2021-11-04 04:12:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 04:12:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 04:12:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2021-11-04 04:12:15,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2021-11-04 04:12:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2021-11-04 04:12:15,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2021-11-04 04:12:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 04:12:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2021-11-04 04:12:15,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2021-11-04 04:12:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 04:12:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 04:12:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 04:12:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 04:12:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 04:12:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2021-11-04 04:12:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2021-11-04 04:12:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 04:12:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 04:12:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2021-11-04 04:12:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2021-11-04 04:12:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2021-11-04 04:12:15,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2021-11-04 04:12:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 04:12:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 04:12:15,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 04:12:20,185 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 04:12:20,186 INFO L299 CfgBuilder]: Removed 7944 assume(true) statements. [2021-11-04 04:12:20,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:12:20 BoogieIcfgContainer [2021-11-04 04:12:20,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 04:12:20,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 04:12:20,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 04:12:20,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 04:12:20,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:12:10" (1/3) ... [2021-11-04 04:12:20,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df7814d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:12:20, skipping insertion in model container [2021-11-04 04:12:20,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:12:13" (2/3) ... [2021-11-04 04:12:20,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df7814d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:12:20, skipping insertion in model container [2021-11-04 04:12:20,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:12:20" (3/3) ... [2021-11-04 04:12:20,201 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-04 04:12:20,205 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 04:12:20,205 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-04 04:12:20,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 04:12:20,265 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 [2021-11-04 04:12:20,265 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-04 04:12:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 8551 states, 8460 states have (on average 1.5256501182033098) internal successors, (12907), 8486 states have internal predecessors, (12907), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (73), 69 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-04 04:12:20,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-04 04:12:20,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:12:20,367 INFO L514 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] [2021-11-04 04:12:20,368 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:12:20,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:12:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1904356284, now seen corresponding path program 1 times [2021-11-04 04:12:20,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:12:20,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624945674] [2021-11-04 04:12:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:12:20,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:12:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:12:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:12:20,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:12:20,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624945674] [2021-11-04 04:12:20,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624945674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:12:20,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:12:20,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:12:20,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917075604] [2021-11-04 04:12:20,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:12:20,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:12:20,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:12:20,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:12:20,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:12:20,982 INFO L87 Difference]: Start difference. First operand has 8551 states, 8460 states have (on average 1.5256501182033098) internal successors, (12907), 8486 states have internal predecessors, (12907), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (73), 69 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-04 04:12:30,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:12:32,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:13:12,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:13:12,451 INFO L93 Difference]: Finished difference Result 25571 states and 39270 transitions. [2021-11-04 04:13:12,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 04:13:12,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2021-11-04 04:13:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:13:12,563 INFO L225 Difference]: With dead ends: 25571 [2021-11-04 04:13:12,563 INFO L226 Difference]: Without dead ends: 16898 [2021-11-04 04:13:12,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.53ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:13:12,619 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 11613 mSDsluCounter, 32744 mSDsCounter, 0 mSdLazyCounter, 46849 mSolverCounterSat, 52 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42594.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11613 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 46903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 170.85ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 46849 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49427.99ms IncrementalHoareTripleChecker+Time [2021-11-04 04:13:12,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11613 Valid, 1088 Invalid, 46903 Unknown, 0 Unchecked, 170.85ms Time], IncrementalHoareTripleChecker [52 Valid, 46849 Invalid, 2 Unknown, 0 Unchecked, 49427.99ms Time] [2021-11-04 04:13:12,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16898 states. [2021-11-04 04:13:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16898 to 16186. [2021-11-04 04:13:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16186 states, 16007 states have (on average 1.3879552695695634) internal successors, (22217), 16057 states have internal predecessors, (22217), 146 states have call successors, (146), 32 states have call predecessors, (146), 32 states have return successors, (219), 138 states have call predecessors, (219), 146 states have call successors, (219) [2021-11-04 04:13:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16186 states to 16186 states and 22582 transitions. [2021-11-04 04:13:13,211 INFO L78 Accepts]: Start accepts. Automaton has 16186 states and 22582 transitions. Word has length 35 [2021-11-04 04:13:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:13:13,212 INFO L470 AbstractCegarLoop]: Abstraction has 16186 states and 22582 transitions. [2021-11-04 04:13:13,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-04 04:13:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 16186 states and 22582 transitions. [2021-11-04 04:13:13,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-04 04:13:13,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:13:13,227 INFO L514 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] [2021-11-04 04:13:13,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 04:13:13,228 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:13:13,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:13:13,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1149088240, now seen corresponding path program 1 times [2021-11-04 04:13:13,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:13:13,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079737278] [2021-11-04 04:13:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:13:13,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:13:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:13:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:13:13,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:13:13,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079737278] [2021-11-04 04:13:13,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079737278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:13:13,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:13:13,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:13:13,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352981599] [2021-11-04 04:13:13,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:13:13,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:13:13,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:13:13,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:13:13,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:13:13,411 INFO L87 Difference]: Start difference. First operand 16186 states and 22582 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-04 04:13:46,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:13:46,009 INFO L93 Difference]: Finished difference Result 45840 states and 64262 transitions. [2021-11-04 04:13:46,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:13:46,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-04 04:13:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:13:46,128 INFO L225 Difference]: With dead ends: 45840 [2021-11-04 04:13:46,128 INFO L226 Difference]: Without dead ends: 29729 [2021-11-04 04:13:46,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:13:46,175 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 10006 mSDsluCounter, 11650 mSDsCounter, 0 mSdLazyCounter, 29432 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26186.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10006 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 29442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.43ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 29432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31573.07ms IncrementalHoareTripleChecker+Time [2021-11-04 04:13:46,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10006 Valid, 470 Invalid, 29442 Unknown, 0 Unchecked, 56.43ms Time], IncrementalHoareTripleChecker [10 Valid, 29432 Invalid, 0 Unknown, 0 Unchecked, 31573.07ms Time] [2021-11-04 04:13:46,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29729 states. [2021-11-04 04:13:46,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29729 to 28212. [2021-11-04 04:13:46,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28212 states, 27863 states have (on average 1.3924559451602483) internal successors, (38798), 27959 states have internal predecessors, (38798), 284 states have call successors, (284), 64 states have call predecessors, (284), 64 states have return successors, (614), 266 states have call predecessors, (614), 284 states have call successors, (614) [2021-11-04 04:13:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28212 states to 28212 states and 39696 transitions. [2021-11-04 04:13:47,046 INFO L78 Accepts]: Start accepts. Automaton has 28212 states and 39696 transitions. Word has length 55 [2021-11-04 04:13:47,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:13:47,046 INFO L470 AbstractCegarLoop]: Abstraction has 28212 states and 39696 transitions. [2021-11-04 04:13:47,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-04 04:13:47,047 INFO L276 IsEmpty]: Start isEmpty. Operand 28212 states and 39696 transitions. [2021-11-04 04:13:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-04 04:13:47,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:13:47,053 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:13:47,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 04:13:47,053 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:13:47,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:13:47,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1727795715, now seen corresponding path program 1 times [2021-11-04 04:13:47,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:13:47,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325526353] [2021-11-04 04:13:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:13:47,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:13:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:13:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:13:47,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:13:47,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325526353] [2021-11-04 04:13:47,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325526353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:13:47,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:13:47,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:13:47,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198367851] [2021-11-04 04:13:47,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:13:47,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:13:47,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:13:47,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:13:47,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:13:47,218 INFO L87 Difference]: Start difference. First operand 28212 states and 39696 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-04 04:14:26,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:14:26,704 INFO L93 Difference]: Finished difference Result 79690 states and 111922 transitions. [2021-11-04 04:14:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:14:26,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-04 04:14:26,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:14:26,886 INFO L225 Difference]: With dead ends: 79690 [2021-11-04 04:14:26,887 INFO L226 Difference]: Without dead ends: 51553 [2021-11-04 04:14:26,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:14:26,958 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 9910 mSDsluCounter, 11656 mSDsCounter, 0 mSdLazyCounter, 32190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31158.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9910 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 32194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.40ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38274.00ms IncrementalHoareTripleChecker+Time [2021-11-04 04:14:26,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9910 Valid, 412 Invalid, 32194 Unknown, 0 Unchecked, 60.40ms Time], IncrementalHoareTripleChecker [4 Valid, 32190 Invalid, 0 Unknown, 0 Unchecked, 38274.00ms Time] [2021-11-04 04:14:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51553 states. [2021-11-04 04:14:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51553 to 51534. [2021-11-04 04:14:27,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51534 states, 50897 states have (on average 1.3883136530640312) internal successors, (70661), 51069 states have internal predecessors, (70661), 516 states have call successors, (516), 120 states have call predecessors, (516), 120 states have return successors, (1108), 488 states have call predecessors, (1108), 516 states have call successors, (1108) [2021-11-04 04:14:27,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51534 states to 51534 states and 72285 transitions. [2021-11-04 04:14:27,929 INFO L78 Accepts]: Start accepts. Automaton has 51534 states and 72285 transitions. Word has length 58 [2021-11-04 04:14:27,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:14:27,929 INFO L470 AbstractCegarLoop]: Abstraction has 51534 states and 72285 transitions. [2021-11-04 04:14:27,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-04 04:14:27,929 INFO L276 IsEmpty]: Start isEmpty. Operand 51534 states and 72285 transitions. [2021-11-04 04:14:27,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-04 04:14:27,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:14:27,934 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-04 04:14:27,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 04:14:27,935 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:14:27,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:14:27,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1478756629, now seen corresponding path program 1 times [2021-11-04 04:14:27,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:14:27,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185962125] [2021-11-04 04:14:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:14:27,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:14:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:14:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:14:28,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:14:28,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185962125] [2021-11-04 04:14:28,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185962125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:14:28,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:14:28,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:14:28,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760321277] [2021-11-04 04:14:28,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:14:28,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:14:28,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:14:28,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:14:28,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:14:28,063 INFO L87 Difference]: Start difference. First operand 51534 states and 72285 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-04 04:14:48,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:14:48,663 INFO L93 Difference]: Finished difference Result 102998 states and 144491 transitions. [2021-11-04 04:14:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:14:48,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 81 [2021-11-04 04:14:48,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:14:48,837 INFO L225 Difference]: With dead ends: 102998 [2021-11-04 04:14:48,837 INFO L226 Difference]: Without dead ends: 51539 [2021-11-04 04:14:48,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:14:48,944 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 11770 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11638 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15521.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11770 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 11639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19446.65ms IncrementalHoareTripleChecker+Time [2021-11-04 04:14:48,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11770 Valid, 146 Invalid, 11639 Unknown, 0 Unchecked, 19.56ms Time], IncrementalHoareTripleChecker [1 Valid, 11638 Invalid, 0 Unknown, 0 Unchecked, 19446.65ms Time] [2021-11-04 04:14:49,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51539 states. [2021-11-04 04:14:49,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51539 to 51534. [2021-11-04 04:14:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51534 states, 50897 states have (on average 1.3881564728765938) internal successors, (70653), 51069 states have internal predecessors, (70653), 516 states have call successors, (516), 120 states have call predecessors, (516), 120 states have return successors, (1108), 488 states have call predecessors, (1108), 516 states have call successors, (1108) [2021-11-04 04:14:50,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51534 states to 51534 states and 72277 transitions. [2021-11-04 04:14:50,344 INFO L78 Accepts]: Start accepts. Automaton has 51534 states and 72277 transitions. Word has length 81 [2021-11-04 04:14:50,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:14:50,344 INFO L470 AbstractCegarLoop]: Abstraction has 51534 states and 72277 transitions. [2021-11-04 04:14:50,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-04 04:14:50,345 INFO L276 IsEmpty]: Start isEmpty. Operand 51534 states and 72277 transitions. [2021-11-04 04:14:50,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-04 04:14:50,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:14:50,356 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-04 04:14:50,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 04:14:50,360 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:14:50,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:14:50,360 INFO L85 PathProgramCache]: Analyzing trace with hash -835888805, now seen corresponding path program 1 times [2021-11-04 04:14:50,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:14:50,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827790256] [2021-11-04 04:14:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:14:50,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:14:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:14:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:14:50,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:14:50,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827790256] [2021-11-04 04:14:50,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827790256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:14:50,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:14:50,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:14:50,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554315941] [2021-11-04 04:14:50,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:14:50,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:14:50,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:14:50,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:14:50,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:14:50,513 INFO L87 Difference]: Start difference. First operand 51534 states and 72277 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-11-04 04:14:52,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:14:55,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:16:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:16:16,628 INFO L93 Difference]: Finished difference Result 205115 states and 288349 transitions. [2021-11-04 04:16:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:16:16,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 83 [2021-11-04 04:16:16,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:16:17,046 INFO L225 Difference]: With dead ends: 205115 [2021-11-04 04:16:17,046 INFO L226 Difference]: Without dead ends: 153656 [2021-11-04 04:16:17,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.39ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:16:17,160 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 23684 mSDsluCounter, 29473 mSDsCounter, 0 mSdLazyCounter, 47785 mSolverCounterSat, 275 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67386.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23766 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 48062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 131.14ms SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 47785 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82784.47ms IncrementalHoareTripleChecker+Time [2021-11-04 04:16:17,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23766 Valid, 762 Invalid, 48062 Unknown, 0 Unchecked, 131.14ms Time], IncrementalHoareTripleChecker [275 Valid, 47785 Invalid, 2 Unknown, 0 Unchecked, 82784.47ms Time] [2021-11-04 04:16:17,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153656 states. [2021-11-04 04:16:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153656 to 52110. [2021-11-04 04:16:19,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52110 states, 51473 states have (on average 1.3838128727682475) internal successors, (71229), 51645 states have internal predecessors, (71229), 516 states have call successors, (516), 120 states have call predecessors, (516), 120 states have return successors, (1108), 488 states have call predecessors, (1108), 516 states have call successors, (1108) [2021-11-04 04:16:19,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52110 states to 52110 states and 72853 transitions. [2021-11-04 04:16:19,196 INFO L78 Accepts]: Start accepts. Automaton has 52110 states and 72853 transitions. Word has length 83 [2021-11-04 04:16:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:16:19,197 INFO L470 AbstractCegarLoop]: Abstraction has 52110 states and 72853 transitions. [2021-11-04 04:16:19,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-11-04 04:16:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand 52110 states and 72853 transitions. [2021-11-04 04:16:19,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-04 04:16:19,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:16:19,204 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-04 04:16:19,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 04:16:19,204 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:16:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:16:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash -379160658, now seen corresponding path program 1 times [2021-11-04 04:16:19,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:16:19,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148224710] [2021-11-04 04:16:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:16:19,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:16:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:16:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:16:19,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:16:19,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148224710] [2021-11-04 04:16:19,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148224710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:16:19,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:16:19,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-04 04:16:19,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933807029] [2021-11-04 04:16:19,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:16:19,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-04 04:16:19,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:16:19,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-04 04:16:19,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-04 04:16:19,406 INFO L87 Difference]: Start difference. First operand 52110 states and 72853 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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) [2021-11-04 04:24:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:24:19,546 INFO L93 Difference]: Finished difference Result 407297 states and 571981 transitions. [2021-11-04 04:24:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-04 04:24:19,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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 90 [2021-11-04 04:24:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:24:21,073 INFO L225 Difference]: With dead ends: 407297 [2021-11-04 04:24:21,073 INFO L226 Difference]: Without dead ends: 355262 [2021-11-04 04:24:21,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 276.02ms TimeCoverageRelationStatistics Valid=312, Invalid=948, Unknown=0, NotChecked=0, Total=1260 [2021-11-04 04:24:21,346 INFO L933 BasicCegarLoop]: 669 mSDtfsCounter, 111422 mSDsluCounter, 204464 mSDsCounter, 0 mSdLazyCounter, 251225 mSolverCounterSat, 1935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 345375.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111461 SdHoareTripleChecker+Valid, 3740 SdHoareTripleChecker+Invalid, 253160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 969.74ms SdHoareTripleChecker+Time, 1935 IncrementalHoareTripleChecker+Valid, 251225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 465751.31ms IncrementalHoareTripleChecker+Time [2021-11-04 04:24:21,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111461 Valid, 3740 Invalid, 253160 Unknown, 0 Unchecked, 969.74ms Time], IncrementalHoareTripleChecker [1935 Valid, 251225 Invalid, 0 Unknown, 0 Unchecked, 465751.31ms Time] [2021-11-04 04:24:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355262 states. [2021-11-04 04:24:25,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355262 to 52126. [2021-11-04 04:24:25,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52126 states, 51489 states have (on average 1.383693604459205) internal successors, (71245), 51661 states have internal predecessors, (71245), 516 states have call successors, (516), 120 states have call predecessors, (516), 120 states have return successors, (1108), 488 states have call predecessors, (1108), 516 states have call successors, (1108) [2021-11-04 04:24:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52126 states to 52126 states and 72869 transitions. [2021-11-04 04:24:25,617 INFO L78 Accepts]: Start accepts. Automaton has 52126 states and 72869 transitions. Word has length 90 [2021-11-04 04:24:25,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:24:25,618 INFO L470 AbstractCegarLoop]: Abstraction has 52126 states and 72869 transitions. [2021-11-04 04:24:25,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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) [2021-11-04 04:24:25,618 INFO L276 IsEmpty]: Start isEmpty. Operand 52126 states and 72869 transitions. [2021-11-04 04:24:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-04 04:24:25,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:24:25,625 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-04 04:24:25,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 04:24:25,625 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:24:25,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:24:25,626 INFO L85 PathProgramCache]: Analyzing trace with hash 326572585, now seen corresponding path program 1 times [2021-11-04 04:24:25,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:24:25,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849104947] [2021-11-04 04:24:25,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:24:25,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:24:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:24:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:24:25,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:24:25,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849104947] [2021-11-04 04:24:25,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849104947] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:24:25,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459247541] [2021-11-04 04:24:25,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:24:25,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:24:25,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:24:25,786 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) [2021-11-04 04:24:25,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 04:24:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:24:26,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 2443 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 04:24:26,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:24:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:24:26,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:24:26,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459247541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:24:26,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 04:24:26,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-04 04:24:26,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903902967] [2021-11-04 04:24:26,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:24:26,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:24:26,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:24:26,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:24:26,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:24:26,881 INFO L87 Difference]: Start difference. First operand 52126 states and 72869 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-04 04:25:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:25:34,352 INFO L93 Difference]: Finished difference Result 104123 states and 145660 transitions. [2021-11-04 04:25:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:25:34,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 92 [2021-11-04 04:25:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:25:34,599 INFO L225 Difference]: With dead ends: 104123 [2021-11-04 04:25:34,600 INFO L226 Difference]: Without dead ends: 51893 [2021-11-04 04:25:34,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.01ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:25:34,668 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 11597 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 12263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44930.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11597 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 12265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.36ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64842.72ms IncrementalHoareTripleChecker+Time [2021-11-04 04:25:34,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11597 Valid, 146 Invalid, 12265 Unknown, 0 Unchecked, 40.36ms Time], IncrementalHoareTripleChecker [2 Valid, 12263 Invalid, 0 Unknown, 0 Unchecked, 64842.72ms Time] [2021-11-04 04:25:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51893 states. [2021-11-04 04:25:36,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51893 to 51893. [2021-11-04 04:25:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51893 states, 51256 states have (on average 1.384442796940846) internal successors, (70961), 51428 states have internal predecessors, (70961), 516 states have call successors, (516), 120 states have call predecessors, (516), 120 states have return successors, (1108), 488 states have call predecessors, (1108), 516 states have call successors, (1108) [2021-11-04 04:25:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51893 states to 51893 states and 72585 transitions. [2021-11-04 04:25:36,562 INFO L78 Accepts]: Start accepts. Automaton has 51893 states and 72585 transitions. Word has length 92 [2021-11-04 04:25:36,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:25:36,562 INFO L470 AbstractCegarLoop]: Abstraction has 51893 states and 72585 transitions. [2021-11-04 04:25:36,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-04 04:25:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 51893 states and 72585 transitions. [2021-11-04 04:25:36,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-04 04:25:36,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:25:36,569 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-04 04:25:36,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 04:25:36,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:25:36,783 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:25:36,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:25:36,784 INFO L85 PathProgramCache]: Analyzing trace with hash 339258647, now seen corresponding path program 1 times [2021-11-04 04:25:36,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:25:36,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176018793] [2021-11-04 04:25:36,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:25:36,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:25:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15