./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--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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--ethernet--renesas--sh_eth.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 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:11:38,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:11:38,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:11:38,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:11:38,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:11:38,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:11:38,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:11:38,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:11:38,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:11:38,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:11:38,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:11:38,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:11:38,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:11:38,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:11:38,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:11:38,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:11:38,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:11:38,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:11:38,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:11:38,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:11:38,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:11:38,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:11:38,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:11:38,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:11:38,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:11:38,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:11:38,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:11:38,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:11:38,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:11:38,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:11:38,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:11:38,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:11:38,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:11:38,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:11:38,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:11:38,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:11:38,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:11:38,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:11:38,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:11:38,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:11:38,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:11:38,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:11:38,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:11:38,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:11:38,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:11:38,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:11:38,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:11:38,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:11:38,463 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:11:38,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:11:38,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:11:38,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:11:38,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:11:38,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:11:38,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:11:38,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:11:38,465 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:11:38,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:11:38,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:11:38,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:11:38,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:11:38,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:11:38,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:11:38,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:11:38,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:11:38,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:11:38,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:11:38,466 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:11:38,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:11:38,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:11:38,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:11:38,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d [2021-11-07 13:11:38,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:11:38,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:11:38,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:11:38,689 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:11:38,689 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:11:38,690 INFO L432 ainManager$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--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-07 13:11:38,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d82f542/336741225d45429ba51c15addc24452d/FLAG62724fa95 [2021-11-07 13:11:39,372 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:11:39,372 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--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-07 13:11:39,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d82f542/336741225d45429ba51c15addc24452d/FLAG62724fa95 [2021-11-07 13:11:39,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d82f542/336741225d45429ba51c15addc24452d [2021-11-07 13:11:39,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:11:39,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:11:39,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:11:39,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:11:39,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:11:39,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:39" (1/1) ... [2021-11-07 13:11:39,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428a0fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:39, skipping insertion in model container [2021-11-07 13:11:39,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:39" (1/1) ... [2021-11-07 13:11:39,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:11:39,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:11:40,561 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--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-07 13:11:41,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:11:41,562 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:11:41,656 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--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-07 13:11:41,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:11:42,084 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:11:42,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:42 WrapperNode [2021-11-07 13:11:42,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:11:42,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:11:42,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:11:42,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:11:42,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:42" (1/1) ... [2021-11-07 13:11:42,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:42" (1/1) ... [2021-11-07 13:11:43,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:11:43,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:11:43,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:11:43,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:11:43,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:42" (1/1) ... [2021-11-07 13:11:43,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:42" (1/1) ... [2021-11-07 13:11:43,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:42" (1/1) ... [2021-11-07 13:11:43,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:42" (1/1) ... [2021-11-07 13:11:43,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:42" (1/1) ... [2021-11-07 13:11:43,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:42" (1/1) ... [2021-11-07 13:11:44,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:42" (1/1) ... [2021-11-07 13:11:44,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:11:44,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:11:44,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:11:44,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:11:44,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:42" (1/1) ... [2021-11-07 13:11:44,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:11:44,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:11:44,163 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) [2021-11-07 13:11:44,182 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 [2021-11-07 13:11:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:11:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:11:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 13:11:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:11:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:11:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 13:11:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tx_timeout [2021-11-07 13:11:44,204 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tx_timeout [2021-11-07 13:11:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:11:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:11:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:11:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:11:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:11:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_dev_init [2021-11-07 13:11:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_dev_init [2021-11-07 13:11:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:11:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_adjust_link [2021-11-07 13:11:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_adjust_link [2021-11-07 13:11:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-07 13:11:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:11:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:11:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 13:11:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 13:11:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 13:11:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:11:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:11:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:12:42,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:12:42,911 INFO L299 CfgBuilder]: Removed 6872 assume(true) statements. [2021-11-07 13:12:42,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:12:42 BoogieIcfgContainer [2021-11-07 13:12:42,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:12:42,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:12:42,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:12:42,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:12:42,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:11:39" (1/3) ... [2021-11-07 13:12:42,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e3bc29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:12:42, skipping insertion in model container [2021-11-07 13:12:42,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:42" (2/3) ... [2021-11-07 13:12:42,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e3bc29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:12:42, skipping insertion in model container [2021-11-07 13:12:42,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:12:42" (3/3) ... [2021-11-07 13:12:42,928 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-07 13:12:42,931 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:12:42,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 13:12:42,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:12:42,992 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 [2021-11-07 13:12:42,992 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 13:12:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 5535 states, 5508 states have (on average 1.3169934640522876) internal successors, (7254), 5511 states have internal predecessors, (7254), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-07 13:12:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 13:12:43,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:12:43,085 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, 1, 1, 1, 1, 1] [2021-11-07 13:12:43,086 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:12:43,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:12:43,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2021068076, now seen corresponding path program 1 times [2021-11-07 13:12:43,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:12:43,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854295566] [2021-11-07 13:12:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:12:43,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:12:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:12:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:12:43,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:12:43,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854295566] [2021-11-07 13:12:43,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854295566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:12:43,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:12:43,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:12:43,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206069094] [2021-11-07 13:12:43,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:12:43,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:12:43,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:12:43,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:12:43,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:12:43,696 INFO L87 Difference]: Start difference. First operand has 5535 states, 5508 states have (on average 1.3169934640522876) internal successors, (7254), 5511 states have internal predecessors, (7254), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) [2021-11-07 13:12:45,861 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 [] [2021-11-07 13:12:46,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:12:46,350 INFO L93 Difference]: Finished difference Result 16284 states and 21510 transitions. [2021-11-07 13:12:46,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:12:46,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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 [2021-11-07 13:12:46,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:12:46,410 INFO L225 Difference]: With dead ends: 16284 [2021-11-07 13:12:46,410 INFO L226 Difference]: Without dead ends: 10658 [2021-11-07 13:12:46,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.15ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:12:46,444 INFO L933 BasicCegarLoop]: 7116 mSDtfsCounter, 6825 mSDsluCounter, 7072 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2156.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6825 SdHoareTripleChecker+Valid, 14188 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.43ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2248.90ms IncrementalHoareTripleChecker+Time [2021-11-07 13:12:46,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6825 Valid, 14188 Invalid, 15 Unknown, 0 Unchecked, 36.43ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2248.90ms Time] [2021-11-07 13:12:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10658 states. [2021-11-07 13:12:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10658 to 10658. [2021-11-07 13:12:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10658 states, 10607 states have (on average 1.2864146318468936) internal successors, (13645), 10611 states have internal predecessors, (13645), 42 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-07 13:12:46,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10658 states to 10658 states and 13729 transitions. [2021-11-07 13:12:46,796 INFO L78 Accepts]: Start accepts. Automaton has 10658 states and 13729 transitions. Word has length 40 [2021-11-07 13:12:46,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:12:46,796 INFO L470 AbstractCegarLoop]: Abstraction has 10658 states and 13729 transitions. [2021-11-07 13:12:46,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 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) [2021-11-07 13:12:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 10658 states and 13729 transitions. [2021-11-07 13:12:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 13:12:46,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:12:46,807 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:12:46,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:12:46,808 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:12:46,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:12:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1447356308, now seen corresponding path program 1 times [2021-11-07 13:12:46,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:12:46,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448724517] [2021-11-07 13:12:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:12:46,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:12:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:12:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:12:47,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:12:47,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448724517] [2021-11-07 13:12:47,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448724517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:12:47,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:12:47,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:12:47,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812794409] [2021-11-07 13:12:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:12:47,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:12:47,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:12:47,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:12:47,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:12:47,141 INFO L87 Difference]: Start difference. First operand 10658 states and 13729 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-07 13:12:48,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:12:48,327 INFO L93 Difference]: Finished difference Result 31796 states and 41072 transitions. [2021-11-07 13:12:48,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:12:48,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 47 [2021-11-07 13:12:48,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:12:48,424 INFO L225 Difference]: With dead ends: 31796 [2021-11-07 13:12:48,425 INFO L226 Difference]: Without dead ends: 21221 [2021-11-07 13:12:48,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.66ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:12:48,457 INFO L933 BasicCegarLoop]: 6965 mSDtfsCounter, 6960 mSDsluCounter, 20778 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 326.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6960 SdHoareTripleChecker+Valid, 27743 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.81ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 383.84ms IncrementalHoareTripleChecker+Time [2021-11-07 13:12:48,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6960 Valid, 27743 Invalid, 303 Unknown, 0 Unchecked, 39.81ms Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 383.84ms Time] [2021-11-07 13:12:48,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21221 states. [2021-11-07 13:12:48,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21221 to 21109. [2021-11-07 13:12:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21109 states, 21008 states have (on average 1.2871287128712872) internal successors, (27040), 21016 states have internal predecessors, (27040), 84 states have call successors, (84), 16 states have call predecessors, (84), 16 states have return successors, (126), 80 states have call predecessors, (126), 84 states have call successors, (126) [2021-11-07 13:12:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21109 states to 21109 states and 27250 transitions. [2021-11-07 13:12:48,899 INFO L78 Accepts]: Start accepts. Automaton has 21109 states and 27250 transitions. Word has length 47 [2021-11-07 13:12:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:12:48,903 INFO L470 AbstractCegarLoop]: Abstraction has 21109 states and 27250 transitions. [2021-11-07 13:12:48,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-07 13:12:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 21109 states and 27250 transitions. [2021-11-07 13:12:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-07 13:12:48,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:12:48,931 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:12:48,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:12:48,931 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:12:48,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:12:48,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1167649304, now seen corresponding path program 1 times [2021-11-07 13:12:48,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:12:48,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548732880] [2021-11-07 13:12:48,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:12:48,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:12:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:12:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-07 13:12:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:12:49,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-07 13:12:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:12:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 13:12:49,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:12:49,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548732880] [2021-11-07 13:12:49,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548732880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:12:49,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:12:49,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:12:49,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272262712] [2021-11-07 13:12:49,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:12:49,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:12:49,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:12:49,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:12:49,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:12:49,242 INFO L87 Difference]: Start difference. First operand 21109 states and 27250 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 13:12:51,302 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:12:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:12:56,813 INFO L93 Difference]: Finished difference Result 56447 states and 73120 transitions. [2021-11-07 13:12:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:12:56,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 136 [2021-11-07 13:12:56,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:12:56,940 INFO L225 Difference]: With dead ends: 56447 [2021-11-07 13:12:56,940 INFO L226 Difference]: Without dead ends: 35426 [2021-11-07 13:12:57,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.33ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:12:57,022 INFO L933 BasicCegarLoop]: 6941 mSDtfsCounter, 5416 mSDsluCounter, 11637 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6148.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5420 SdHoareTripleChecker+Valid, 18578 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.61ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6838.79ms IncrementalHoareTripleChecker+Time [2021-11-07 13:12:57,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5420 Valid, 18578 Invalid, 2166 Unknown, 0 Unchecked, 39.61ms Time], IncrementalHoareTripleChecker [60 Valid, 2105 Invalid, 1 Unknown, 0 Unchecked, 6838.79ms Time] [2021-11-07 13:12:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35426 states. [2021-11-07 13:12:57,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35426 to 35143. [2021-11-07 13:12:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35143 states, 34946 states have (on average 1.2917930521375838) internal successors, (45143), 34974 states have internal predecessors, (45143), 152 states have call successors, (152), 32 states have call predecessors, (152), 44 states have return successors, (282), 148 states have call predecessors, (282), 152 states have call successors, (282) [2021-11-07 13:12:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35143 states to 35143 states and 45577 transitions. [2021-11-07 13:12:57,816 INFO L78 Accepts]: Start accepts. Automaton has 35143 states and 45577 transitions. Word has length 136 [2021-11-07 13:12:57,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:12:57,817 INFO L470 AbstractCegarLoop]: Abstraction has 35143 states and 45577 transitions. [2021-11-07 13:12:57,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 13:12:57,818 INFO L276 IsEmpty]: Start isEmpty. Operand 35143 states and 45577 transitions. [2021-11-07 13:12:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-07 13:12:57,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:12:57,840 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:12:57,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:12:57,840 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:12:57,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:12:57,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1313962223, now seen corresponding path program 1 times [2021-11-07 13:12:57,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:12:57,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181713892] [2021-11-07 13:12:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:12:57,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:12:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:12:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-07 13:12:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:12:58,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-07 13:12:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:12:58,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 13:12:58,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:12:58,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181713892] [2021-11-07 13:12:58,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181713892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:12:58,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:12:58,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:12:58,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003823436] [2021-11-07 13:12:58,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:12:58,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:12:58,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:12:58,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:12:58,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:12:58,148 INFO L87 Difference]: Start difference. First operand 35143 states and 45577 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 13:13:00,207 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 [] [2021-11-07 13:13:05,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:13:05,308 INFO L93 Difference]: Finished difference Result 65446 states and 84913 transitions. [2021-11-07 13:13:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:13:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 135 [2021-11-07 13:13:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:13:05,420 INFO L225 Difference]: With dead ends: 65446 [2021-11-07 13:13:05,420 INFO L226 Difference]: Without dead ends: 30391 [2021-11-07 13:13:05,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.59ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:13:05,508 INFO L933 BasicCegarLoop]: 6097 mSDtfsCounter, 6544 mSDsluCounter, 4332 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5747.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6548 SdHoareTripleChecker+Valid, 10429 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.26ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6391.94ms IncrementalHoareTripleChecker+Time [2021-11-07 13:13:05,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6548 Valid, 10429 Invalid, 1703 Unknown, 0 Unchecked, 27.26ms Time], IncrementalHoareTripleChecker [33 Valid, 1669 Invalid, 1 Unknown, 0 Unchecked, 6391.94ms Time] [2021-11-07 13:13:05,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30391 states. [2021-11-07 13:13:06,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30391 to 30143. [2021-11-07 13:13:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30143 states, 29978 states have (on average 1.2918473547267997) internal successors, (38727), 30006 states have internal predecessors, (38727), 120 states have call successors, (120), 32 states have call predecessors, (120), 44 states have return successors, (230), 116 states have call predecessors, (230), 120 states have call successors, (230) [2021-11-07 13:13:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30143 states to 30143 states and 39077 transitions. [2021-11-07 13:13:06,786 INFO L78 Accepts]: Start accepts. Automaton has 30143 states and 39077 transitions. Word has length 135 [2021-11-07 13:13:06,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:13:06,787 INFO L470 AbstractCegarLoop]: Abstraction has 30143 states and 39077 transitions. [2021-11-07 13:13:06,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 13:13:06,787 INFO L276 IsEmpty]: Start isEmpty. Operand 30143 states and 39077 transitions. [2021-11-07 13:13:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 13:13:06,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:13:06,806 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 13:13:06,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:13:06,806 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:13:06,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:13:06,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1915740303, now seen corresponding path program 1 times [2021-11-07 13:13:06,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:13:06,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227433889] [2021-11-07 13:13:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:13:06,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:13:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:13:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 13:13:07,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:13:07,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227433889] [2021-11-07 13:13:07,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227433889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:13:07,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:13:07,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:13:07,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327081826] [2021-11-07 13:13:07,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:13:07,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:13:07,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:13:07,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:13:07,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:13:07,028 INFO L87 Difference]: Start difference. First operand 30143 states and 39077 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-07 13:13:08,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:13:08,299 INFO L93 Difference]: Finished difference Result 87125 states and 112723 transitions. [2021-11-07 13:13:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:13:08,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 118 [2021-11-07 13:13:08,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:13:08,539 INFO L225 Difference]: With dead ends: 87125 [2021-11-07 13:13:08,540 INFO L226 Difference]: Without dead ends: 57070 [2021-11-07 13:13:08,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:13:08,633 INFO L933 BasicCegarLoop]: 6201 mSDtfsCounter, 5608 mSDsluCounter, 6047 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5608 SdHoareTripleChecker+Valid, 12248 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.43ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 157.30ms IncrementalHoareTripleChecker+Time [2021-11-07 13:13:08,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5608 Valid, 12248 Invalid, 38 Unknown, 0 Unchecked, 12.43ms Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 157.30ms Time] [2021-11-07 13:13:08,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57070 states. [2021-11-07 13:13:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57070 to 56623. [2021-11-07 13:13:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56623 states, 56310 states have (on average 1.289202628307583) internal successors, (72595), 56366 states have internal predecessors, (72595), 224 states have call successors, (224), 64 states have call predecessors, (224), 88 states have return successors, (428), 216 states have call predecessors, (428), 224 states have call successors, (428) [2021-11-07 13:13:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56623 states to 56623 states and 73247 transitions. [2021-11-07 13:13:10,196 INFO L78 Accepts]: Start accepts. Automaton has 56623 states and 73247 transitions. Word has length 118 [2021-11-07 13:13:10,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:13:10,198 INFO L470 AbstractCegarLoop]: Abstraction has 56623 states and 73247 transitions. [2021-11-07 13:13:10,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-07 13:13:10,198 INFO L276 IsEmpty]: Start isEmpty. Operand 56623 states and 73247 transitions. [2021-11-07 13:13:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 13:13:10,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:13:10,221 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 13:13:10,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:13:10,221 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:13:10,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:13:10,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1475299326, now seen corresponding path program 1 times [2021-11-07 13:13:10,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:13:10,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298398197] [2021-11-07 13:13:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:13:10,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:13:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:13:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-07 13:13:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:13:10,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 13:13:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:13:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-07 13:13:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:13:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:13:10,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:13:10,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298398197] [2021-11-07 13:13:10,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298398197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:13:10,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:13:10,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:13:10,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219787004] [2021-11-07 13:13:10,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:13:10,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:13:10,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:13:10,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:13:10,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:13:10,508 INFO L87 Difference]: Start difference. First operand 56623 states and 73247 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 13:13:12,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:13:21,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:13:21,715 INFO L93 Difference]: Finished difference Result 170293 states and 220885 transitions. [2021-11-07 13:13:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 13:13:21,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 122 [2021-11-07 13:13:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:13:22,157 INFO L225 Difference]: With dead ends: 170293 [2021-11-07 13:13:22,157 INFO L226 Difference]: Without dead ends: 113758 [2021-11-07 13:13:22,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.06ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:13:22,323 INFO L933 BasicCegarLoop]: 7637 mSDtfsCounter, 6462 mSDsluCounter, 18849 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7528.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6470 SdHoareTripleChecker+Valid, 26486 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.74ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8484.76ms IncrementalHoareTripleChecker+Time [2021-11-07 13:13:22,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6470 Valid, 26486 Invalid, 2537 Unknown, 0 Unchecked, 55.74ms Time], IncrementalHoareTripleChecker [47 Valid, 2489 Invalid, 1 Unknown, 0 Unchecked, 8484.76ms Time] [2021-11-07 13:13:22,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113758 states. [2021-11-07 13:13:24,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113758 to 111959. [2021-11-07 13:13:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111959 states, 111398 states have (on average 1.289457620424065) internal successors, (143643), 111510 states have internal predecessors, (143643), 384 states have call successors, (384), 128 states have call predecessors, (384), 176 states have return successors, (728), 368 states have call predecessors, (728), 384 states have call successors, (728) [2021-11-07 13:13:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111959 states to 111959 states and 144755 transitions. [2021-11-07 13:13:25,671 INFO L78 Accepts]: Start accepts. Automaton has 111959 states and 144755 transitions. Word has length 122 [2021-11-07 13:13:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:13:25,671 INFO L470 AbstractCegarLoop]: Abstraction has 111959 states and 144755 transitions. [2021-11-07 13:13:25,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 13:13:25,672 INFO L276 IsEmpty]: Start isEmpty. Operand 111959 states and 144755 transitions. [2021-11-07 13:13:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 13:13:25,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:13:25,726 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:13:25,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:13:25,726 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:13:25,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:13:25,727 INFO L85 PathProgramCache]: Analyzing trace with hash -441464138, now seen corresponding path program 1 times [2021-11-07 13:13:25,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:13:25,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566144234] [2021-11-07 13:13:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:13:25,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:13:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:13:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 13:13:25,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:13:25,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566144234] [2021-11-07 13:13:25,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566144234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:13:25,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:13:25,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:13:25,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497413767] [2021-11-07 13:13:25,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:13:25,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:13:25,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:13:25,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:13:25,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:13:25,939 INFO L87 Difference]: Start difference. First operand 111959 states and 144755 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-07 13:13:28,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:13:28,817 INFO L93 Difference]: Finished difference Result 223846 states and 289443 transitions. [2021-11-07 13:13:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:13:28,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 168 [2021-11-07 13:13:28,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:13:29,259 INFO L225 Difference]: With dead ends: 223846 [2021-11-07 13:13:29,260 INFO L226 Difference]: Without dead ends: 111975 [2021-11-07 13:13:29,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:13:29,680 INFO L933 BasicCegarLoop]: 6181 mSDtfsCounter, 0 mSDsluCounter, 6176 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12357 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.97ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.93ms IncrementalHoareTripleChecker+Time [2021-11-07 13:13:29,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12357 Invalid, 6 Unknown, 0 Unchecked, 7.97ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 11.93ms Time] [2021-11-07 13:13:29,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111975 states. [2021-11-07 13:13:31,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111975 to 111975. [2021-11-07 13:13:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111975 states, 111414 states have (on average 1.289416051842677) internal successors, (143659), 111526 states have internal predecessors, (143659), 384 states have call successors, (384), 128 states have call predecessors, (384), 176 states have return successors, (728), 368 states have call predecessors, (728), 384 states have call successors, (728) [2021-11-07 13:13:32,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111975 states to 111975 states and 144771 transitions. [2021-11-07 13:13:32,423 INFO L78 Accepts]: Start accepts. Automaton has 111975 states and 144771 transitions. Word has length 168 [2021-11-07 13:13:32,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:13:32,423 INFO L470 AbstractCegarLoop]: Abstraction has 111975 states and 144771 transitions. [2021-11-07 13:13:32,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-07 13:13:32,424 INFO L276 IsEmpty]: Start isEmpty. Operand 111975 states and 144771 transitions. [2021-11-07 13:13:32,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 13:13:32,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:13:32,461 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:13:32,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 13:13:32,462 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:13:32,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:13:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash -239640204, now seen corresponding path program 1 times [2021-11-07 13:13:32,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:13:32,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4632864] [2021-11-07 13:13:32,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:13:32,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:13:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:13:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 13:13:32,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:13:32,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4632864] [2021-11-07 13:13:32,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4632864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:13:32,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:13:32,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:13:32,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071548250] [2021-11-07 13:13:32,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:13:32,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:13:32,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:13:32,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:13:32,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:13:32,908 INFO L87 Difference]: Start difference. First operand 111975 states and 144771 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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)