./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--usb--cdc_ncm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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--usb--cdc_ncm.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 e5d904d16bfadec9650eee3419425295e6c215eb7ede78bce460c631a5749a1f --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 16:41:06,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:41:06,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:41:07,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:41:07,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:41:07,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:41:07,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:41:07,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:41:07,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:41:07,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:41:07,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:41:07,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:41:07,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:41:07,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:41:07,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:41:07,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:41:07,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:41:07,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:41:07,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:41:07,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:41:07,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:41:07,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:41:07,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:41:07,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:41:07,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:41:07,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:41:07,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:41:07,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:41:07,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:41:07,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:41:07,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:41:07,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:41:07,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:41:07,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:41:07,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:41:07,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:41:07,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:41:07,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:41:07,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:41:07,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:41:07,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:41:07,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:41:07,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:41:07,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:41:07,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:41:07,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:41:07,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:41:07,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:41:07,092 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:41:07,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:41:07,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:41:07,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:41:07,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:41:07,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:41:07,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:41:07,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:41:07,093 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:41:07,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:41:07,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:41:07,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:41:07,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:41:07,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:41:07,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:41:07,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:41:07,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:41:07,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:41:07,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:41:07,095 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:41:07,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:41:07,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:41:07,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:41:07,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5d904d16bfadec9650eee3419425295e6c215eb7ede78bce460c631a5749a1f [2021-11-05 16:41:07,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:41:07,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:41:07,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:41:07,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:41:07,389 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:41:07,390 INFO L432 ainManager$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--usb--cdc_ncm.ko-entry_point.cil.out.i [2021-11-05 16:41:07,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1676dfd4c/c7fa0dad4eac4a5c8d6399d3f86288ca/FLAGe132b9ed1 [2021-11-05 16:41:08,121 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:41:08,122 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--usb--cdc_ncm.ko-entry_point.cil.out.i [2021-11-05 16:41:08,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1676dfd4c/c7fa0dad4eac4a5c8d6399d3f86288ca/FLAGe132b9ed1 [2021-11-05 16:41:08,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1676dfd4c/c7fa0dad4eac4a5c8d6399d3f86288ca [2021-11-05 16:41:08,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:41:08,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:41:08,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:41:08,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:41:08,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:41:08,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:41:08" (1/1) ... [2021-11-05 16:41:08,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9b7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:08, skipping insertion in model container [2021-11-05 16:41:08,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:41:08" (1/1) ... [2021-11-05 16:41:08,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:41:08,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:41:09,024 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--usb--cdc_ncm.ko-entry_point.cil.out.i[167966,167979] [2021-11-05 16:41:09,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:41:09,663 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:41:09,750 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--usb--cdc_ncm.ko-entry_point.cil.out.i[167966,167979] [2021-11-05 16:41:09,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:41:10,065 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:41:10,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:10 WrapperNode [2021-11-05 16:41:10,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:41:10,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:41:10,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:41:10,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:41:10,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:10" (1/1) ... [2021-11-05 16:41:10,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:10" (1/1) ... [2021-11-05 16:41:10,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:41:10,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:41:10,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:41:10,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:41:10,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:10" (1/1) ... [2021-11-05 16:41:10,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:10" (1/1) ... [2021-11-05 16:41:10,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:10" (1/1) ... [2021-11-05 16:41:10,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:10" (1/1) ... [2021-11-05 16:41:11,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:10" (1/1) ... [2021-11-05 16:41:11,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:10" (1/1) ... [2021-11-05 16:41:11,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:10" (1/1) ... [2021-11-05 16:41:11,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:41:11,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:41:11,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:41:11,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:41:11,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:10" (1/1) ... [2021-11-05 16:41:11,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:41:11,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:41:11,470 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) [2021-11-05 16:41:11,528 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 [2021-11-05 16:41:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:41:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:41:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-05 16:41:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:41:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:41:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-05 16:41:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:41:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:41:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:41:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:41:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:41:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:41:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:41:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:41:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 16:41:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:41:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:41:11,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:46:49,641 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:46:49,642 INFO L299 CfgBuilder]: Removed 2849 assume(true) statements. [2021-11-05 16:46:49,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:46:49 BoogieIcfgContainer [2021-11-05 16:46:49,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:46:49,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:46:49,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:46:49,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:46:49,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:41:08" (1/3) ... [2021-11-05 16:46:49,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf59294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:46:49, skipping insertion in model container [2021-11-05 16:46:49,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:41:10" (2/3) ... [2021-11-05 16:46:49,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf59294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:46:49, skipping insertion in model container [2021-11-05 16:46:49,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:46:49" (3/3) ... [2021-11-05 16:46:49,655 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cdc_ncm.ko-entry_point.cil.out.i [2021-11-05 16:46:49,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:46:49,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-05 16:46:49,734 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:46:49,742 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 [2021-11-05 16:46:49,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-05 16:46:49,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 3680 states, 3678 states have (on average 1.5065252854812399) internal successors, (5541), 3679 states have internal predecessors, (5541), 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) [2021-11-05 16:46:49,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 16:46:49,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:46:49,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:46:49,819 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:46:49,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:46:49,823 INFO L85 PathProgramCache]: Analyzing trace with hash -487043136, now seen corresponding path program 1 times [2021-11-05 16:46:49,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:46:49,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129137178] [2021-11-05 16:46:49,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:46:49,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:46:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:46:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:46:50,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:46:50,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129137178] [2021-11-05 16:46:50,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129137178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:46:50,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:46:50,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:46:50,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770028817] [2021-11-05 16:46:50,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:46:50,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:46:50,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:46:50,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:46:50,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:46:50,718 INFO L87 Difference]: Start difference. First operand has 3680 states, 3678 states have (on average 1.5065252854812399) internal successors, (5541), 3679 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-05 16:46:52,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:46:53,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:46:53,223 INFO L93 Difference]: Finished difference Result 10664 states and 16105 transitions. [2021-11-05 16:46:53,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:46:53,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 122 [2021-11-05 16:46:53,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:46:53,268 INFO L225 Difference]: With dead ends: 10664 [2021-11-05 16:46:53,268 INFO L226 Difference]: Without dead ends: 6943 [2021-11-05 16:46:53,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:46:53,286 INFO L933 BasicCegarLoop]: 5422 mSDtfsCounter, 4981 mSDsluCounter, 5402 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2140.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4981 SdHoareTripleChecker+Valid, 10824 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.59ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2272.45ms IncrementalHoareTripleChecker+Time [2021-11-05 16:46:53,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4981 Valid, 10824 Invalid, 15 Unknown, 0 Unchecked, 28.59ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2272.45ms Time] [2021-11-05 16:46:53,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6943 states. [2021-11-05 16:46:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6943 to 6943. [2021-11-05 16:46:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6943 states, 6942 states have (on average 1.4860270815326995) internal successors, (10316), 6942 states have internal predecessors, (10316), 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) [2021-11-05 16:46:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 10316 transitions. [2021-11-05 16:46:53,503 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 10316 transitions. Word has length 122 [2021-11-05 16:46:53,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:46:53,505 INFO L470 AbstractCegarLoop]: Abstraction has 6943 states and 10316 transitions. [2021-11-05 16:46:53,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-05 16:46:53,506 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 10316 transitions. [2021-11-05 16:46:53,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-05 16:46:53,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:46:53,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:46:53,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:46:53,516 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:46:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:46:53,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1149235761, now seen corresponding path program 1 times [2021-11-05 16:46:53,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:46:53,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252452088] [2021-11-05 16:46:53,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:46:53,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:46:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:46:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:46:54,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:46:54,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252452088] [2021-11-05 16:46:54,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252452088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:46:54,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:46:54,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:46:54,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524006691] [2021-11-05 16:46:54,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:46:54,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:46:54,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:46:54,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:46:54,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:46:54,036 INFO L87 Difference]: Start difference. First operand 6943 states and 10316 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 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) [2021-11-05 16:46:54,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:46:54,586 INFO L93 Difference]: Finished difference Result 20335 states and 30353 transitions. [2021-11-05 16:46:54,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:46:54,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 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 128 [2021-11-05 16:46:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:46:54,634 INFO L225 Difference]: With dead ends: 20335 [2021-11-05 16:46:54,634 INFO L226 Difference]: Without dead ends: 13633 [2021-11-05 16:46:54,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.47ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:46:54,649 INFO L933 BasicCegarLoop]: 5365 mSDtfsCounter, 5336 mSDsluCounter, 15786 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 246.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5336 SdHoareTripleChecker+Valid, 21151 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.53ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 283.90ms IncrementalHoareTripleChecker+Time [2021-11-05 16:46:54,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5336 Valid, 21151 Invalid, 93 Unknown, 0 Unchecked, 26.53ms Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 283.90ms Time] [2021-11-05 16:46:54,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13633 states. [2021-11-05 16:46:55,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13633 to 13633. [2021-11-05 16:46:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13633 states, 13632 states have (on average 1.490243544600939) internal successors, (20315), 13632 states have internal predecessors, (20315), 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) [2021-11-05 16:46:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13633 states to 13633 states and 20315 transitions. [2021-11-05 16:46:55,213 INFO L78 Accepts]: Start accepts. Automaton has 13633 states and 20315 transitions. Word has length 128 [2021-11-05 16:46:55,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:46:55,216 INFO L470 AbstractCegarLoop]: Abstraction has 13633 states and 20315 transitions. [2021-11-05 16:46:55,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 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) [2021-11-05 16:46:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 13633 states and 20315 transitions. [2021-11-05 16:46:55,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-05 16:46:55,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:46:55,230 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:46:55,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:46:55,230 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:46:55,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:46:55,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1746722557, now seen corresponding path program 1 times [2021-11-05 16:46:55,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:46:55,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898353732] [2021-11-05 16:46:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:46:55,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:46:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:46:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:46:55,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:46:55,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898353732] [2021-11-05 16:46:55,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898353732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:46:55,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:46:55,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:46:55,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944131019] [2021-11-05 16:46:55,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:46:55,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:46:55,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:46:55,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:46:55,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:46:55,646 INFO L87 Difference]: Start difference. First operand 13633 states and 20315 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2021-11-05 16:46:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:46:56,150 INFO L93 Difference]: Finished difference Result 36701 states and 54799 transitions. [2021-11-05 16:46:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:46:56,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 161 [2021-11-05 16:46:56,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:46:56,206 INFO L225 Difference]: With dead ends: 36701 [2021-11-05 16:46:56,206 INFO L226 Difference]: Without dead ends: 23314 [2021-11-05 16:46:56,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:46:56,231 INFO L933 BasicCegarLoop]: 5383 mSDtfsCounter, 3965 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3965 SdHoareTripleChecker+Valid, 10432 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.49ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 206.27ms IncrementalHoareTripleChecker+Time [2021-11-05 16:46:56,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3965 Valid, 10432 Invalid, 35 Unknown, 0 Unchecked, 8.49ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 206.27ms Time] [2021-11-05 16:46:56,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23314 states. [2021-11-05 16:46:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23314 to 23155. [2021-11-05 16:46:56,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23155 states, 23154 states have (on average 1.493953528547983) internal successors, (34591), 23154 states have internal predecessors, (34591), 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) [2021-11-05 16:46:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23155 states to 23155 states and 34591 transitions. [2021-11-05 16:46:56,735 INFO L78 Accepts]: Start accepts. Automaton has 23155 states and 34591 transitions. Word has length 161 [2021-11-05 16:46:56,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:46:56,736 INFO L470 AbstractCegarLoop]: Abstraction has 23155 states and 34591 transitions. [2021-11-05 16:46:56,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2021-11-05 16:46:56,737 INFO L276 IsEmpty]: Start isEmpty. Operand 23155 states and 34591 transitions. [2021-11-05 16:46:56,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-05 16:46:56,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:46:56,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:46:56,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:46:56,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:46:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:46:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash 303283693, now seen corresponding path program 1 times [2021-11-05 16:46:56,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:46:56,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114975395] [2021-11-05 16:46:56,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:46:56,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:46:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:46:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:46:57,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:46:57,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114975395] [2021-11-05 16:46:57,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114975395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:46:57,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:46:57,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:46:57,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834477239] [2021-11-05 16:46:57,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:46:57,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:46:57,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:46:57,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:46:57,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:46:57,136 INFO L87 Difference]: Start difference. First operand 23155 states and 34591 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-05 16:46:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:46:57,741 INFO L93 Difference]: Finished difference Result 61539 states and 92049 transitions. [2021-11-05 16:46:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:46:57,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 [2021-11-05 16:46:57,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:46:57,836 INFO L225 Difference]: With dead ends: 61539 [2021-11-05 16:46:57,836 INFO L226 Difference]: Without dead ends: 38630 [2021-11-05 16:46:57,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:46:57,884 INFO L933 BasicCegarLoop]: 6757 mSDtfsCounter, 3913 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3913 SdHoareTripleChecker+Valid, 11806 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.96ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182.16ms IncrementalHoareTripleChecker+Time [2021-11-05 16:46:57,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3913 Valid, 11806 Invalid, 35 Unknown, 0 Unchecked, 7.96ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 182.16ms Time] [2021-11-05 16:46:57,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38630 states. [2021-11-05 16:46:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38630 to 38547. [2021-11-05 16:46:58,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38547 states, 38546 states have (on average 1.4956415711098427) internal successors, (57651), 38546 states have internal predecessors, (57651), 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) [2021-11-05 16:46:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38547 states to 38547 states and 57651 transitions. [2021-11-05 16:46:58,674 INFO L78 Accepts]: Start accepts. Automaton has 38547 states and 57651 transitions. Word has length 168 [2021-11-05 16:46:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:46:58,675 INFO L470 AbstractCegarLoop]: Abstraction has 38547 states and 57651 transitions. [2021-11-05 16:46:58,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-05 16:46:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand 38547 states and 57651 transitions. [2021-11-05 16:46:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-05 16:46:58,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:46:58,680 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:46:58,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:46:58,681 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:46:58,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:46:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1050737221, now seen corresponding path program 1 times [2021-11-05 16:46:58,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:46:58,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650758234] [2021-11-05 16:46:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:46:58,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:46:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:46:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:46:59,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:46:59,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650758234] [2021-11-05 16:46:59,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650758234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:46:59,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:46:59,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:46:59,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225709451] [2021-11-05 16:46:59,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:46:59,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:46:59,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:46:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:46:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:46:59,068 INFO L87 Difference]: Start difference. First operand 38547 states and 57651 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2021-11-05 16:47:00,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:00,299 INFO L93 Difference]: Finished difference Result 100357 states and 150189 transitions. [2021-11-05 16:47:00,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:47:00,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 174 [2021-11-05 16:47:00,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:00,472 INFO L225 Difference]: With dead ends: 100357 [2021-11-05 16:47:00,472 INFO L226 Difference]: Without dead ends: 62056 [2021-11-05 16:47:00,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:00,532 INFO L933 BasicCegarLoop]: 8136 mSDtfsCounter, 3875 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 188.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3875 SdHoareTripleChecker+Valid, 13185 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.70ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 221.70ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:00,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3875 Valid, 13185 Invalid, 35 Unknown, 0 Unchecked, 9.70ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 221.70ms Time] [2021-11-05 16:47:00,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62056 states. [2021-11-05 16:47:01,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62056 to 62027. [2021-11-05 16:47:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62027 states, 62026 states have (on average 1.4959371876309935) internal successors, (92787), 62026 states have internal predecessors, (92787), 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) [2021-11-05 16:47:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62027 states to 62027 states and 92787 transitions. [2021-11-05 16:47:02,243 INFO L78 Accepts]: Start accepts. Automaton has 62027 states and 92787 transitions. Word has length 174 [2021-11-05 16:47:02,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:02,243 INFO L470 AbstractCegarLoop]: Abstraction has 62027 states and 92787 transitions. [2021-11-05 16:47:02,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2021-11-05 16:47:02,244 INFO L276 IsEmpty]: Start isEmpty. Operand 62027 states and 92787 transitions. [2021-11-05 16:47:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-05 16:47:02,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:02,264 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:47:02,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:47:02,264 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:47:02,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:02,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1403202226, now seen corresponding path program 1 times [2021-11-05 16:47:02,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:02,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686803576] [2021-11-05 16:47:02,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:02,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 16:47:02,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:02,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686803576] [2021-11-05 16:47:02,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686803576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:02,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:02,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:47:02,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730756396] [2021-11-05 16:47:02,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:02,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:47:02,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:47:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:47:02,728 INFO L87 Difference]: Start difference. First operand 62027 states and 92787 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2021-11-05 16:47:06,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:06,902 INFO L93 Difference]: Finished difference Result 304167 states and 455979 transitions. [2021-11-05 16:47:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:47:06,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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 221 [2021-11-05 16:47:06,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:08,073 INFO L225 Difference]: With dead ends: 304167 [2021-11-05 16:47:08,073 INFO L226 Difference]: Without dead ends: 242386 [2021-11-05 16:47:08,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:47:08,200 INFO L933 BasicCegarLoop]: 10150 mSDtfsCounter, 14726 mSDsluCounter, 15224 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 475.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14726 SdHoareTripleChecker+Valid, 25374 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.88ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 553.38ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:08,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14726 Valid, 25374 Invalid, 512 Unknown, 0 Unchecked, 47.88ms Time], IncrementalHoareTripleChecker [99 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 553.38ms Time] [2021-11-05 16:47:08,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242386 states. [2021-11-05 16:47:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242386 to 62219. [2021-11-05 16:47:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62219 states, 62218 states have (on average 1.4944067633160822) internal successors, (92979), 62218 states have internal predecessors, (92979), 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) [2021-11-05 16:47:11,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62219 states to 62219 states and 92979 transitions. [2021-11-05 16:47:11,479 INFO L78 Accepts]: Start accepts. Automaton has 62219 states and 92979 transitions. Word has length 221 [2021-11-05 16:47:11,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:11,479 INFO L470 AbstractCegarLoop]: Abstraction has 62219 states and 92979 transitions. [2021-11-05 16:47:11,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2021-11-05 16:47:11,480 INFO L276 IsEmpty]: Start isEmpty. Operand 62219 states and 92979 transitions. [2021-11-05 16:47:11,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-05 16:47:11,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:11,512 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:47:11,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:47:11,512 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:47:11,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:11,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1344391176, now seen corresponding path program 1 times [2021-11-05 16:47:11,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:11,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618602585] [2021-11-05 16:47:11,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:11,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 16:47:11,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:11,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618602585] [2021-11-05 16:47:11,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618602585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:11,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:11,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 16:47:11,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604962920] [2021-11-05 16:47:11,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:11,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 16:47:11,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:11,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 16:47:11,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:47:11,908 INFO L87 Difference]: Start difference. First operand 62219 states and 92979 transitions. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 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) [2021-11-05 16:47:19,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:19,709 INFO L93 Difference]: Finished difference Result 303015 states and 454251 transitions. [2021-11-05 16:47:19,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 16:47:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 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 224 [2021-11-05 16:47:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:20,511 INFO L225 Difference]: With dead ends: 303015 [2021-11-05 16:47:20,511 INFO L226 Difference]: Without dead ends: 241042 [2021-11-05 16:47:20,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 128.10ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-05 16:47:20,682 INFO L933 BasicCegarLoop]: 14889 mSDtfsCounter, 44301 mSDsluCounter, 59090 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2054.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44301 SdHoareTripleChecker+Valid, 73979 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.71ms SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2326.66ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:20,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44301 Valid, 73979 Invalid, 2115 Unknown, 0 Unchecked, 75.71ms Time], IncrementalHoareTripleChecker [242 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 2326.66ms Time] [2021-11-05 16:47:20,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241042 states. [2021-11-05 16:47:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241042 to 62411. [2021-11-05 16:47:23,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62411 states, 62410 states have (on average 1.49134754045826) internal successors, (93075), 62410 states have internal predecessors, (93075), 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) [2021-11-05 16:47:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62411 states to 62411 states and 93075 transitions. [2021-11-05 16:47:24,095 INFO L78 Accepts]: Start accepts. Automaton has 62411 states and 93075 transitions. Word has length 224 [2021-11-05 16:47:24,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:24,097 INFO L470 AbstractCegarLoop]: Abstraction has 62411 states and 93075 transitions. [2021-11-05 16:47:24,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 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) [2021-11-05 16:47:24,098 INFO L276 IsEmpty]: Start isEmpty. Operand 62411 states and 93075 transitions. [2021-11-05 16:47:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-05 16:47:24,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:24,125 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:47:24,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:47:24,125 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:47:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:24,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1682825085, now seen corresponding path program 1 times [2021-11-05 16:47:24,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:24,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101318814] [2021-11-05 16:47:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:24,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:47:24,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:24,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101318814] [2021-11-05 16:47:24,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101318814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:24,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:24,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 16:47:24,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555176433] [2021-11-05 16:47:24,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:24,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:47:24,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:47:24,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:47:24,911 INFO L87 Difference]: Start difference. First operand 62411 states and 93075 transitions. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 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) [2021-11-05 16:47:28,580 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 [] [2021-11-05 16:47:31,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:47:33,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:47:35,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:47:38,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:47:40,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:47:42,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []