./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--team--team.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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--team--team.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 fd0809ab472c07ecac4481f79234cefe77a263df35fd70312ac385669cfbdfaf --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 18:34:33,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 18:34:33,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 18:34:33,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 18:34:33,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 18:34:33,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 18:34:33,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 18:34:33,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 18:34:33,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 18:34:33,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 18:34:33,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 18:34:33,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 18:34:33,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 18:34:33,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 18:34:33,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 18:34:33,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 18:34:33,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 18:34:33,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 18:34:33,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 18:34:33,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 18:34:33,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 18:34:33,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 18:34:33,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 18:34:33,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 18:34:33,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 18:34:33,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 18:34:33,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 18:34:33,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 18:34:33,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 18:34:33,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 18:34:33,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 18:34:33,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 18:34:33,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 18:34:33,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 18:34:33,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 18:34:33,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 18:34:33,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 18:34:33,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 18:34:33,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 18:34:33,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 18:34:33,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 18:34:33,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 18:34:33,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 18:34:33,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 18:34:33,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 18:34:33,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 18:34:33,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 18:34:33,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 18:34:33,378 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 18:34:33,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 18:34:33,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 18:34:33,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 18:34:33,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 18:34:33,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 18:34:33,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 18:34:33,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 18:34:33,380 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 18:34:33,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 18:34:33,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 18:34:33,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 18:34:33,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 18:34:33,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:34:33,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 18:34:33,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 18:34:33,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 18:34:33,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 18:34:33,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 18:34:33,381 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 18:34:33,381 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 18:34:33,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 18:34:33,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 18:34:33,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd0809ab472c07ecac4481f79234cefe77a263df35fd70312ac385669cfbdfaf [2021-11-02 18:34:33,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 18:34:33,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 18:34:33,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 18:34:33,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 18:34:33,619 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 18:34:33,620 INFO L432 ainManager$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--team--team.ko-entry_point.cil.out.i [2021-11-02 18:34:33,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff8e8426/ea3cf15fbc304831a0448f412e973293/FLAG65d02e25c [2021-11-02 18:34:34,385 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 18:34:34,386 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--team--team.ko-entry_point.cil.out.i [2021-11-02 18:34:34,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff8e8426/ea3cf15fbc304831a0448f412e973293/FLAG65d02e25c [2021-11-02 18:34:34,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff8e8426/ea3cf15fbc304831a0448f412e973293 [2021-11-02 18:34:34,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 18:34:34,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 18:34:34,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 18:34:34,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 18:34:34,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 18:34:34,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:34:34" (1/1) ... [2021-11-02 18:34:34,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29099fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:34, skipping insertion in model container [2021-11-02 18:34:34,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:34:34" (1/1) ... [2021-11-02 18:34:34,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 18:34:34,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 18:34:35,820 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--team--team.ko-entry_point.cil.out.i[177976,177989] [2021-11-02 18:34:36,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:34:36,999 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 18:34:37,117 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--team--team.ko-entry_point.cil.out.i[177976,177989] [2021-11-02 18:34:37,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:34:37,627 INFO L208 MainTranslator]: Completed translation [2021-11-02 18:34:37,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:37 WrapperNode [2021-11-02 18:34:37,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 18:34:37,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 18:34:37,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 18:34:37,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 18:34:37,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:37" (1/1) ... [2021-11-02 18:34:37,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:37" (1/1) ... [2021-11-02 18:34:38,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 18:34:38,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 18:34:38,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 18:34:38,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 18:34:38,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:37" (1/1) ... [2021-11-02 18:34:38,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:37" (1/1) ... [2021-11-02 18:34:38,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:37" (1/1) ... [2021-11-02 18:34:38,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:37" (1/1) ... [2021-11-02 18:34:38,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:37" (1/1) ... [2021-11-02 18:34:39,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:37" (1/1) ... [2021-11-02 18:34:39,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:37" (1/1) ... [2021-11-02 18:34:39,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 18:34:39,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 18:34:39,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 18:34:39,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 18:34:39,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:37" (1/1) ... [2021-11-02 18:34:39,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:34:39,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:34:39,252 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) [2021-11-02 18:34:39,269 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 [2021-11-02 18:34:39,290 INFO L130 BoogieDeclarations]: Found specification of procedure __team_change_mode [2021-11-02 18:34:39,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_change_mode [2021-11-02 18:34:39,290 INFO L130 BoogieDeclarations]: Found specification of procedure team_init [2021-11-02 18:34:39,290 INFO L138 BoogieDeclarations]: Found implementation of procedure team_init [2021-11-02 18:34:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure team_del_slave [2021-11-02 18:34:39,291 INFO L138 BoogieDeclarations]: Found implementation of procedure team_del_slave [2021-11-02 18:34:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_set [2021-11-02 18:34:39,291 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_set [2021-11-02 18:34:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_add [2021-11-02 18:34:39,291 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_add [2021-11-02 18:34:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 18:34:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure team_add_slave [2021-11-02 18:34:39,292 INFO L138 BoogieDeclarations]: Found implementation of procedure team_add_slave [2021-11-02 18:34:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 18:34:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 18:34:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 18:34:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure team_mode_option_set [2021-11-02 18:34:39,292 INFO L138 BoogieDeclarations]: Found implementation of procedure team_mode_option_set [2021-11-02 18:34:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure team_change_mode [2021-11-02 18:34:39,292 INFO L138 BoogieDeclarations]: Found implementation of procedure team_change_mode [2021-11-02 18:34:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-02 18:34:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 18:34:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 18:34:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 18:34:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 18:34:39,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 18:34:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-02 18:34:39,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-02 18:34:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_set [2021-11-02 18:34:39,293 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_set [2021-11-02 18:34:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_del [2021-11-02 18:34:39,294 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_del [2021-11-02 18:34:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 18:34:39,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 18:34:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_register [2021-11-02 18:34:39,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_register [2021-11-02 18:34:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_change_check [2021-11-02 18:34:39,294 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_change_check [2021-11-02 18:34:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 18:34:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 18:34:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure team_options_register [2021-11-02 18:34:39,295 INFO L138 BoogieDeclarations]: Found implementation of procedure team_options_register [2021-11-02 18:34:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_option [2021-11-02 18:34:39,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_option [2021-11-02 18:34:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-02 18:34:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 18:34:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 18:34:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_cmd_options_get [2021-11-02 18:34:39,296 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_cmd_options_get [2021-11-02 18:34:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 18:34:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_fill_one_option_get [2021-11-02 18:34:39,296 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_fill_one_option_get [2021-11-02 18:34:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 18:34:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure team_option_get [2021-11-02 18:34:39,296 INFO L138 BoogieDeclarations]: Found implementation of procedure team_option_get [2021-11-02 18:34:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_options_get [2021-11-02 18:34:39,297 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_options_get [2021-11-02 18:34:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add_port [2021-11-02 18:34:39,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add_port [2021-11-02 18:34:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure __team_options_change_check [2021-11-02 18:34:39,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_options_change_check [2021-11-02 18:34:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 18:34:39,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 18:34:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure team_port_enter [2021-11-02 18:34:39,298 INFO L138 BoogieDeclarations]: Found implementation of procedure team_port_enter [2021-11-02 18:34:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 18:34:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure team_nl_send_event_options_get [2021-11-02 18:34:39,298 INFO L138 BoogieDeclarations]: Found implementation of procedure team_nl_send_event_options_get [2021-11-02 18:34:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure team_uninit [2021-11-02 18:34:39,298 INFO L138 BoogieDeclarations]: Found implementation of procedure team_uninit [2021-11-02 18:34:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure __team_option_inst_add [2021-11-02 18:34:39,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __team_option_inst_add [2021-11-02 18:34:44,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 18:34:44,470 INFO L299 CfgBuilder]: Removed 5565 assume(true) statements. [2021-11-02 18:34:44,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:34:44 BoogieIcfgContainer [2021-11-02 18:34:44,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 18:34:44,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 18:34:44,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 18:34:44,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 18:34:44,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 06:34:34" (1/3) ... [2021-11-02 18:34:44,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dbf5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:34:44, skipping insertion in model container [2021-11-02 18:34:44,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:34:37" (2/3) ... [2021-11-02 18:34:44,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dbf5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:34:44, skipping insertion in model container [2021-11-02 18:34:44,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:34:44" (3/3) ... [2021-11-02 18:34:44,487 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--team--team.ko-entry_point.cil.out.i [2021-11-02 18:34:44,493 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 18:34:44,493 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 18:34:44,542 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 18:34:44,547 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 [2021-11-02 18:34:44,547 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 18:34:44,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 6373 states, 6296 states have (on average 1.4866581956797966) internal successors, (9360), 6300 states have internal predecessors, (9360), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-02 18:34:44,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 18:34:44,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:34:44,631 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] [2021-11-02 18:34:44,632 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:34:44,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:34:44,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1443674913, now seen corresponding path program 1 times [2021-11-02 18:34:44,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:34:44,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88638244] [2021-11-02 18:34:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:34:44,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:34:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:34:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:34:45,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:34:45,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88638244] [2021-11-02 18:34:45,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88638244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:34:45,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:34:45,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:34:45,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425542588] [2021-11-02 18:34:45,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:34:45,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:34:45,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:34:45,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:34:45,230 INFO L87 Difference]: Start difference. First operand has 6373 states, 6296 states have (on average 1.4866581956797966) internal successors, (9360), 6300 states have internal predecessors, (9360), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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) [2021-11-02 18:35:01,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:35:01,344 INFO L93 Difference]: Finished difference Result 12743 states and 18957 transitions. [2021-11-02 18:35:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:35:01,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 [2021-11-02 18:35:01,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:35:01,405 INFO L225 Difference]: With dead ends: 12743 [2021-11-02 18:35:01,406 INFO L226 Difference]: Without dead ends: 6358 [2021-11-02 18:35:01,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:35:01,440 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 9306 mSDsCounter, 0 mSdLazyCounter, 18416 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13152.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 18418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.66ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15417.39ms IncrementalHoareTripleChecker+Time [2021-11-02 18:35:01,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 18418 Unknown, 0 Unchecked, 61.66ms Time], IncrementalHoareTripleChecker [2 Valid, 18416 Invalid, 0 Unknown, 0 Unchecked, 15417.39ms Time] [2021-11-02 18:35:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2021-11-02 18:35:01,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 6358. [2021-11-02 18:35:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 6282 states have (on average 1.463546641197071) internal successors, (9194), 6285 states have internal predecessors, (9194), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-02 18:35:01,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 9290 transitions. [2021-11-02 18:35:01,671 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 9290 transitions. Word has length 47 [2021-11-02 18:35:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:35:01,671 INFO L470 AbstractCegarLoop]: Abstraction has 6358 states and 9290 transitions. [2021-11-02 18:35:01,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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) [2021-11-02 18:35:01,676 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 9290 transitions. [2021-11-02 18:35:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 18:35:01,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:35:01,683 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] [2021-11-02 18:35:01,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 18:35:01,684 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:35:01,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:35:01,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1101231259, now seen corresponding path program 1 times [2021-11-02 18:35:01,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:35:01,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524752526] [2021-11-02 18:35:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:35:01,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:35:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:35:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 18:35:01,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:35:01,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524752526] [2021-11-02 18:35:01,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524752526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:35:01,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:35:01,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:35:01,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268676692] [2021-11-02 18:35:01,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:35:01,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:35:01,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:35:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:35:01,972 INFO L87 Difference]: Start difference. First operand 6358 states and 9290 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-02 18:35:16,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:35:16,719 INFO L93 Difference]: Finished difference Result 12657 states and 18509 transitions. [2021-11-02 18:35:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:35:16,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-02 18:35:16,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:35:16,750 INFO L225 Difference]: With dead ends: 12657 [2021-11-02 18:35:16,750 INFO L226 Difference]: Without dead ends: 6359 [2021-11-02 18:35:16,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:35:16,766 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 9276 mSDsCounter, 0 mSdLazyCounter, 18383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12232.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 18383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14263.11ms IncrementalHoareTripleChecker+Time [2021-11-02 18:35:16,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 18383 Unknown, 0 Unchecked, 40.51ms Time], IncrementalHoareTripleChecker [0 Valid, 18383 Invalid, 0 Unknown, 0 Unchecked, 14263.11ms Time] [2021-11-02 18:35:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6359 states. [2021-11-02 18:35:16,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6359 to 6359. [2021-11-02 18:35:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6359 states, 6283 states have (on average 1.4634728632818716) internal successors, (9195), 6286 states have internal predecessors, (9195), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-02 18:35:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6359 states to 6359 states and 9291 transitions. [2021-11-02 18:35:16,918 INFO L78 Accepts]: Start accepts. Automaton has 6359 states and 9291 transitions. Word has length 49 [2021-11-02 18:35:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:35:16,918 INFO L470 AbstractCegarLoop]: Abstraction has 6359 states and 9291 transitions. [2021-11-02 18:35:16,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-02 18:35:16,919 INFO L276 IsEmpty]: Start isEmpty. Operand 6359 states and 9291 transitions. [2021-11-02 18:35:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 18:35:16,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:35:16,922 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] [2021-11-02 18:35:16,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 18:35:16,922 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:35:16,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:35:16,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1185725313, now seen corresponding path program 1 times [2021-11-02 18:35:16,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:35:16,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584441266] [2021-11-02 18:35:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:35:16,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:35:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:35:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 18:35:17,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:35:17,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584441266] [2021-11-02 18:35:17,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584441266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:35:17,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:35:17,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:35:17,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901413255] [2021-11-02 18:35:17,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:35:17,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:35:17,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:35:17,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:35:17,245 INFO L87 Difference]: Start difference. First operand 6359 states and 9291 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-02 18:35:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:35:32,543 INFO L93 Difference]: Finished difference Result 12656 states and 18507 transitions. [2021-11-02 18:35:32,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:35:32,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-02 18:35:32,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:35:32,573 INFO L225 Difference]: With dead ends: 12656 [2021-11-02 18:35:32,574 INFO L226 Difference]: Without dead ends: 6360 [2021-11-02 18:35:32,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:35:32,595 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 9276 mSDsCounter, 0 mSdLazyCounter, 18383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12792.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 18383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14905.25ms IncrementalHoareTripleChecker+Time [2021-11-02 18:35:32,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 18383 Unknown, 0 Unchecked, 35.60ms Time], IncrementalHoareTripleChecker [0 Valid, 18383 Invalid, 0 Unknown, 0 Unchecked, 14905.25ms Time] [2021-11-02 18:35:32,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2021-11-02 18:35:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 6360. [2021-11-02 18:35:32,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6360 states, 6284 states have (on average 1.4633991088478675) internal successors, (9196), 6287 states have internal predecessors, (9196), 48 states have call successors, (48), 27 states have call predecessors, (48), 27 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-02 18:35:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 9292 transitions. [2021-11-02 18:35:32,742 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 9292 transitions. Word has length 50 [2021-11-02 18:35:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:35:32,743 INFO L470 AbstractCegarLoop]: Abstraction has 6360 states and 9292 transitions. [2021-11-02 18:35:32,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-02 18:35:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 9292 transitions. [2021-11-02 18:35:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 18:35:32,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:35:32,745 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] [2021-11-02 18:35:32,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 18:35:32,745 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:35:32,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:35:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash -410931799, now seen corresponding path program 1 times [2021-11-02 18:35:32,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:35:32,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694268350] [2021-11-02 18:35:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:35:32,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:35:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:35:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:35:32,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:35:32,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694268350] [2021-11-02 18:35:32,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694268350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:35:32,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:35:32,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:35:32,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967991016] [2021-11-02 18:35:32,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:35:32,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:35:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:35:32,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:35:32,930 INFO L87 Difference]: Start difference. First operand 6360 states and 9292 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-02 18:35:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:35:55,450 INFO L93 Difference]: Finished difference Result 18900 states and 27660 transitions. [2021-11-02 18:35:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:35:55,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-02 18:35:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:35:55,519 INFO L225 Difference]: With dead ends: 18900 [2021-11-02 18:35:55,522 INFO L226 Difference]: Without dead ends: 12605 [2021-11-02 18:35:55,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:35:55,541 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 9161 mSDsluCounter, 9262 mSDsCounter, 0 mSdLazyCounter, 18367 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18544.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9161 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 18370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.66ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21590.67ms IncrementalHoareTripleChecker+Time [2021-11-02 18:35:55,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9161 Valid, 240 Invalid, 18370 Unknown, 0 Unchecked, 53.66ms Time], IncrementalHoareTripleChecker [3 Valid, 18367 Invalid, 0 Unknown, 0 Unchecked, 21590.67ms Time] [2021-11-02 18:35:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12605 states. [2021-11-02 18:35:55,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12605 to 12605. [2021-11-02 18:35:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12605 states, 12454 states have (on average 1.465553235908142) internal successors, (18252), 12460 states have internal predecessors, (18252), 96 states have call successors, (96), 54 states have call predecessors, (96), 54 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-02 18:35:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12605 states to 12605 states and 18444 transitions. [2021-11-02 18:35:55,786 INFO L78 Accepts]: Start accepts. Automaton has 12605 states and 18444 transitions. Word has length 51 [2021-11-02 18:35:55,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:35:55,788 INFO L470 AbstractCegarLoop]: Abstraction has 12605 states and 18444 transitions. [2021-11-02 18:35:55,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-02 18:35:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 12605 states and 18444 transitions. [2021-11-02 18:35:55,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 18:35:55,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:35:55,790 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] [2021-11-02 18:35:55,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 18:35:55,791 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:35:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:35:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash 328131653, now seen corresponding path program 1 times [2021-11-02 18:35:55,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:35:55,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157871921] [2021-11-02 18:35:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:35:55,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:35:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:35:56,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:35:56,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:35:56,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157871921] [2021-11-02 18:35:56,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157871921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:35:56,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:35:56,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:35:56,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856622470] [2021-11-02 18:35:56,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:35:56,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:35:56,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:35:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:35:56,004 INFO L87 Difference]: Start difference. First operand 12605 states and 18444 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2021-11-02 18:36:27,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:36:27,387 INFO L93 Difference]: Finished difference Result 37683 states and 55365 transitions. [2021-11-02 18:36:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:36:27,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2021-11-02 18:36:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:36:27,484 INFO L225 Difference]: With dead ends: 37683 [2021-11-02 18:36:27,484 INFO L226 Difference]: Without dead ends: 25135 [2021-11-02 18:36:27,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.08ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:36:27,524 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 9219 mSDsluCounter, 27755 mSDsCounter, 0 mSdLazyCounter, 36813 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25935.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9219 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 36829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 102.38ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 36813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30187.92ms IncrementalHoareTripleChecker+Time [2021-11-02 18:36:27,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9219 Valid, 603 Invalid, 36829 Unknown, 0 Unchecked, 102.38ms Time], IncrementalHoareTripleChecker [16 Valid, 36813 Invalid, 0 Unknown, 0 Unchecked, 30187.92ms Time] [2021-11-02 18:36:27,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25135 states. [2021-11-02 18:36:28,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25135 to 25071. [2021-11-02 18:36:28,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25071 states, 24770 states have (on average 1.465643924101736) internal successors, (36304), 24782 states have internal predecessors, (36304), 192 states have call successors, (192), 108 states have call predecessors, (192), 108 states have return successors, (288), 188 states have call predecessors, (288), 192 states have call successors, (288) [2021-11-02 18:36:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25071 states to 25071 states and 36784 transitions. [2021-11-02 18:36:28,204 INFO L78 Accepts]: Start accepts. Automaton has 25071 states and 36784 transitions. Word has length 54 [2021-11-02 18:36:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:36:28,205 INFO L470 AbstractCegarLoop]: Abstraction has 25071 states and 36784 transitions. [2021-11-02 18:36:28,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2021-11-02 18:36:28,206 INFO L276 IsEmpty]: Start isEmpty. Operand 25071 states and 36784 transitions. [2021-11-02 18:36:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-02 18:36:28,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:36:28,226 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:36:28,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 18:36:28,227 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:36:28,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:36:28,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2012061470, now seen corresponding path program 1 times [2021-11-02 18:36:28,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:36:28,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660095572] [2021-11-02 18:36:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:36:28,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:36:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:36:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:36:28,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:36:28,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660095572] [2021-11-02 18:36:28,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660095572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:36:28,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:36:28,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:36:28,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675787863] [2021-11-02 18:36:28,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:36:28,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:36:28,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:36:28,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:36:28,421 INFO L87 Difference]: Start difference. First operand 25071 states and 36784 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-11-02 18:36:48,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:36:48,210 INFO L93 Difference]: Finished difference Result 71181 states and 105026 transitions. [2021-11-02 18:36:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:36:48,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 112 [2021-11-02 18:36:48,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:36:48,368 INFO L225 Difference]: With dead ends: 71181 [2021-11-02 18:36:48,368 INFO L226 Difference]: Without dead ends: 46175 [2021-11-02 18:36:48,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:36:48,423 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 7976 mSDsluCounter, 9207 mSDsCounter, 0 mSdLazyCounter, 18320 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16107.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7976 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 18322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.49ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18841.39ms IncrementalHoareTripleChecker+Time [2021-11-02 18:36:48,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7976 Valid, 239 Invalid, 18322 Unknown, 0 Unchecked, 37.49ms Time], IncrementalHoareTripleChecker [2 Valid, 18320 Invalid, 0 Unknown, 0 Unchecked, 18841.39ms Time] [2021-11-02 18:36:48,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46175 states. [2021-11-02 18:36:49,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46175 to 46121. [2021-11-02 18:36:49,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46121 states, 45524 states have (on average 1.478472893418856) internal successors, (67306), 45548 states have internal predecessors, (67306), 380 states have call successors, (380), 216 states have call predecessors, (380), 216 states have return successors, (570), 372 states have call predecessors, (570), 380 states have call successors, (570) [2021-11-02 18:36:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46121 states to 46121 states and 68256 transitions. [2021-11-02 18:36:49,188 INFO L78 Accepts]: Start accepts. Automaton has 46121 states and 68256 transitions. Word has length 112 [2021-11-02 18:36:49,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:36:49,188 INFO L470 AbstractCegarLoop]: Abstraction has 46121 states and 68256 transitions. [2021-11-02 18:36:49,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-11-02 18:36:49,189 INFO L276 IsEmpty]: Start isEmpty. Operand 46121 states and 68256 transitions. [2021-11-02 18:36:49,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 18:36:49,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:36:49,247 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:36:49,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 18:36:49,247 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:36:49,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:36:49,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1636370595, now seen corresponding path program 1 times [2021-11-02 18:36:49,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:36:49,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508144165] [2021-11-02 18:36:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:36:49,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:36:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:36:49,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-02 18:36:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:36:49,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-02 18:36:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:36:49,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-02 18:36:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:36:49,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-02 18:36:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:36:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:36:49,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:36:49,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508144165] [2021-11-02 18:36:49,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508144165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:36:49,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:36:49,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:36:49,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594176571] [2021-11-02 18:36:49,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:36:49,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:36:49,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:36:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:36:49,522 INFO L87 Difference]: Start difference. First operand 46121 states and 68256 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-02 18:36:51,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:37:34,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:37:34,354 INFO L93 Difference]: Finished difference Result 113939 states and 168666 transitions. [2021-11-02 18:37:34,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 18:37:34,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2021-11-02 18:37:34,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:37:34,624 INFO L225 Difference]: With dead ends: 113939 [2021-11-02 18:37:34,624 INFO L226 Difference]: Without dead ends: 67883 [2021-11-02 18:37:34,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.92ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:37:34,759 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 7525 mSDsluCounter, 35225 mSDsCounter, 0 mSdLazyCounter, 54156 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37400.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7535 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 54368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 154.41ms SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 54156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42764.56ms IncrementalHoareTripleChecker+Time [2021-11-02 18:37:34,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7535 Valid, 432 Invalid, 54368 Unknown, 0 Unchecked, 154.41ms Time], IncrementalHoareTripleChecker [212 Valid, 54156 Invalid, 0 Unknown, 0 Unchecked, 42764.56ms Time] [2021-11-02 18:37:34,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67883 states. [2021-11-02 18:37:36,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67883 to 65471. [2021-11-02 18:37:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65471 states, 64498 states have (on average 1.4631461440664826) internal successors, (94370), 64570 states have internal predecessors, (94370), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-02 18:37:36,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65471 states to 65471 states and 95922 transitions. [2021-11-02 18:37:36,260 INFO L78 Accepts]: Start accepts. Automaton has 65471 states and 95922 transitions. Word has length 138 [2021-11-02 18:37:36,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:37:36,262 INFO L470 AbstractCegarLoop]: Abstraction has 65471 states and 95922 transitions. [2021-11-02 18:37:36,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-02 18:37:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 65471 states and 95922 transitions. [2021-11-02 18:37:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-02 18:37:36,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:37:36,306 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:37:36,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 18:37:36,306 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:37:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:37:36,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1329722284, now seen corresponding path program 1 times [2021-11-02 18:37:36,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:37:36,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916206125] [2021-11-02 18:37:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:37:36,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:37:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:37:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 18:37:36,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:37:36,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916206125] [2021-11-02 18:37:36,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916206125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:37:36,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:37:36,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:37:36,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945768928] [2021-11-02 18:37:36,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:37:36,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:37:36,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:37:36,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:37:36,489 INFO L87 Difference]: Start difference. First operand 65471 states and 95922 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-11-02 18:38:10,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:38:10,247 INFO L93 Difference]: Finished difference Result 200804 states and 295039 transitions. [2021-11-02 18:38:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:38:10,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 137 [2021-11-02 18:38:10,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:38:10,701 INFO L225 Difference]: With dead ends: 200804 [2021-11-02 18:38:10,701 INFO L226 Difference]: Without dead ends: 135398 [2021-11-02 18:38:10,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:38:10,825 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 12382 mSDsluCounter, 22373 mSDsCounter, 0 mSdLazyCounter, 35448 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27120.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12400 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 35504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 90.21ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 35448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31262.64ms IncrementalHoareTripleChecker+Time [2021-11-02 18:38:10,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12400 Valid, 360 Invalid, 35504 Unknown, 0 Unchecked, 90.21ms Time], IncrementalHoareTripleChecker [56 Valid, 35448 Invalid, 0 Unknown, 0 Unchecked, 31262.64ms Time] [2021-11-02 18:38:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135398 states. [2021-11-02 18:38:12,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135398 to 65567. [2021-11-02 18:38:12,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65567 states, 64594 states have (on average 1.462457813419203) internal successors, (94466), 64666 states have internal predecessors, (94466), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-02 18:38:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65567 states to 65567 states and 96018 transitions. [2021-11-02 18:38:12,913 INFO L78 Accepts]: Start accepts. Automaton has 65567 states and 96018 transitions. Word has length 137 [2021-11-02 18:38:12,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:38:12,914 INFO L470 AbstractCegarLoop]: Abstraction has 65567 states and 96018 transitions. [2021-11-02 18:38:12,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-11-02 18:38:12,914 INFO L276 IsEmpty]: Start isEmpty. Operand 65567 states and 96018 transitions. [2021-11-02 18:38:12,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-02 18:38:12,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:38:12,945 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:38:12,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 18:38:12,945 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:38:12,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:38:12,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1292596120, now seen corresponding path program 1 times [2021-11-02 18:38:12,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:38:12,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898296087] [2021-11-02 18:38:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:38:12,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:38:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:38:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 18:38:13,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:38:13,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898296087] [2021-11-02 18:38:13,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898296087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:38:13,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:38:13,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 18:38:13,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374816649] [2021-11-02 18:38:13,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 18:38:13,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:38:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 18:38:13,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 18:38:13,211 INFO L87 Difference]: Start difference. First operand 65567 states and 96018 transitions. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 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) [2021-11-02 18:38:16,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:38:18,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:38:20,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:38:22,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:38:24,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:38:27,113 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 [] [2021-11-02 18:40:04,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:40:04,863 INFO L93 Difference]: Finished difference Result 246748 states and 362943 transitions. [2021-11-02 18:40:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 18:40:04,863 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 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 140 [2021-11-02 18:40:04,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:40:05,572 INFO L225 Difference]: With dead ends: 246748 [2021-11-02 18:40:05,572 INFO L226 Difference]: Without dead ends: 181246 [2021-11-02 18:40:05,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 184.84ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-02 18:40:05,700 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 41465 mSDsluCounter, 116266 mSDsCounter, 0 mSdLazyCounter, 141587 mSolverCounterSat, 303 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92967.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41474 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 141896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 395.61ms SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 141587 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105524.43ms IncrementalHoareTripleChecker+Time [2021-11-02 18:40:05,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41474 Valid, 1218 Invalid, 141896 Unknown, 0 Unchecked, 395.61ms Time], IncrementalHoareTripleChecker [303 Valid, 141587 Invalid, 6 Unknown, 0 Unchecked, 105524.43ms Time] [2021-11-02 18:40:05,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181246 states. [2021-11-02 18:40:08,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181246 to 65663. [2021-11-02 18:40:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65663 states, 64690 states have (on average 1.4617715257381356) internal successors, (94562), 64762 states have internal predecessors, (94562), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-02 18:40:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65663 states to 65663 states and 96114 transitions. [2021-11-02 18:40:08,423 INFO L78 Accepts]: Start accepts. Automaton has 65663 states and 96114 transitions. Word has length 140 [2021-11-02 18:40:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:40:08,423 INFO L470 AbstractCegarLoop]: Abstraction has 65663 states and 96114 transitions. [2021-11-02 18:40:08,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 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) [2021-11-02 18:40:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 65663 states and 96114 transitions. [2021-11-02 18:40:08,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-02 18:40:08,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:40:08,455 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:40:08,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 18:40:08,455 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:40:08,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:40:08,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1702487821, now seen corresponding path program 1 times [2021-11-02 18:40:08,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:40:08,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832520943] [2021-11-02 18:40:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:40:08,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:40:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:40:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-02 18:40:08,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:40:08,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832520943] [2021-11-02 18:40:08,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832520943] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:40:08,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019414626] [2021-11-02 18:40:08,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:40:08,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:40:08,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:40:08,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 18:40:08,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 18:40:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:40:10,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 3507 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 18:40:10,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:40:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-02 18:40:10,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:40:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-02 18:40:11,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019414626] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:40:11,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:40:11,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 18:40:11,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600305658] [2021-11-02 18:40:11,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 18:40:11,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:40:11,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 18:40:11,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:40:11,205 INFO L87 Difference]: Start difference. First operand 65663 states and 96114 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 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) [2021-11-02 18:40:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:40:27,986 INFO L93 Difference]: Finished difference Result 131274 states and 192168 transitions. [2021-11-02 18:40:27,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 18:40:27,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 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 142 [2021-11-02 18:40:27,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:40:28,218 INFO L225 Difference]: With dead ends: 131274 [2021-11-02 18:40:28,219 INFO L226 Difference]: Without dead ends: 65666 [2021-11-02 18:40:28,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 41.34ms TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:40:28,348 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 9192 mSDsCounter, 0 mSdLazyCounter, 18220 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12909.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 18236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.28ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 18220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14959.30ms IncrementalHoareTripleChecker+Time [2021-11-02 18:40:28,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 18236 Unknown, 0 Unchecked, 30.28ms Time], IncrementalHoareTripleChecker [16 Valid, 18220 Invalid, 0 Unknown, 0 Unchecked, 14959.30ms Time] [2021-11-02 18:40:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65666 states. [2021-11-02 18:40:29,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65666 to 65666. [2021-11-02 18:40:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65666 states, 64693 states have (on average 1.4617501120677663) internal successors, (94565), 64765 states have internal predecessors, (94565), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-02 18:40:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65666 states to 65666 states and 96117 transitions. [2021-11-02 18:40:30,297 INFO L78 Accepts]: Start accepts. Automaton has 65666 states and 96117 transitions. Word has length 142 [2021-11-02 18:40:30,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:40:30,298 INFO L470 AbstractCegarLoop]: Abstraction has 65666 states and 96117 transitions. [2021-11-02 18:40:30,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 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) [2021-11-02 18:40:30,298 INFO L276 IsEmpty]: Start isEmpty. Operand 65666 states and 96117 transitions. [2021-11-02 18:40:30,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-02 18:40:30,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:40:30,331 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-02 18:40:30,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 18:40:30,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 18:40:30,543 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:40:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:40:30,544 INFO L85 PathProgramCache]: Analyzing trace with hash 281574061, now seen corresponding path program 2 times [2021-11-02 18:40:30,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:40:30,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352590077] [2021-11-02 18:40:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:40:30,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:40:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:40:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 18:40:30,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:40:30,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352590077] [2021-11-02 18:40:30,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352590077] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:40:30,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469643932] [2021-11-02 18:40:30,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 18:40:30,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:40:30,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:40:30,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 18:40:30,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 18:40:40,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 18:40:40,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 18:40:40,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 18:40:40,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:40:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 18:40:40,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:40:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 18:40:41,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469643932] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:40:41,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:40:41,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-11-02 18:40:41,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819011194] [2021-11-02 18:40:41,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 18:40:41,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:40:41,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 18:40:41,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2021-11-02 18:40:41,027 INFO L87 Difference]: Start difference. First operand 65666 states and 96117 transitions. Second operand has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 11 states have internal predecessors, (144), 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) [2021-11-02 18:40:43,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:40:45,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:41:07,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:41:07,702 INFO L93 Difference]: Finished difference Result 131272 states and 192165 transitions. [2021-11-02 18:41:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 18:41:07,703 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 11 states have internal predecessors, (144), 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 145 [2021-11-02 18:41:07,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:41:07,917 INFO L225 Difference]: With dead ends: 131272 [2021-11-02 18:41:07,918 INFO L226 Difference]: Without dead ends: 65670 [2021-11-02 18:41:08,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 78.48ms TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2021-11-02 18:41:08,051 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 18384 mSDsCounter, 0 mSdLazyCounter, 27337 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21708.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 27349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.88ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24500.31ms IncrementalHoareTripleChecker+Time [2021-11-02 18:41:08,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 288 Invalid, 27349 Unknown, 0 Unchecked, 46.88ms Time], IncrementalHoareTripleChecker [12 Valid, 27337 Invalid, 0 Unknown, 0 Unchecked, 24500.31ms Time] [2021-11-02 18:41:08,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65670 states. [2021-11-02 18:41:09,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65670 to 65670. [2021-11-02 18:41:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65670 states, 64697 states have (on average 1.4617215635964573) internal successors, (94569), 64769 states have internal predecessors, (94569), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-02 18:41:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65670 states to 65670 states and 96121 transitions. [2021-11-02 18:41:09,914 INFO L78 Accepts]: Start accepts. Automaton has 65670 states and 96121 transitions. Word has length 145 [2021-11-02 18:41:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:41:09,914 INFO L470 AbstractCegarLoop]: Abstraction has 65670 states and 96121 transitions. [2021-11-02 18:41:09,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 11 states have internal predecessors, (144), 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) [2021-11-02 18:41:09,915 INFO L276 IsEmpty]: Start isEmpty. Operand 65670 states and 96121 transitions. [2021-11-02 18:41:09,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-02 18:41:09,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:41:09,945 INFO L514 BasicCegarLoop]: trace histogram [6, 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] [2021-11-02 18:41:09,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 18:41:10,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-02 18:41:10,165 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:41:10,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:41:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1845894227, now seen corresponding path program 3 times [2021-11-02 18:41:10,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:41:10,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251323554] [2021-11-02 18:41:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:41:10,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:41:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:41:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 18:41:10,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:41:10,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251323554] [2021-11-02 18:41:10,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251323554] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:41:10,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122229398] [2021-11-02 18:41:10,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 18:41:10,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:41:10,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:41:10,496 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 18:41:10,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 18:42:43,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-02 18:42:43,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 18:42:43,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 3350 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-02 18:42:43,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:42:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-02 18:42:44,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:42:44,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122229398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:42:44,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 18:42:44,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 20 [2021-11-02 18:42:44,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421644861] [2021-11-02 18:42:44,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 18:42:44,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:42:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 18:42:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-11-02 18:42:44,177 INFO L87 Difference]: Start difference. First operand 65670 states and 96121 transitions. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:42:47,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:42:50,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:42:52,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:42:53,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:42:55,733 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:45:37,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:45:37,977 INFO L93 Difference]: Finished difference Result 246262 states and 362303 transitions. [2021-11-02 18:45:37,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-02 18:45:37,978 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-02 18:45:37,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:45:38,869 INFO L225 Difference]: With dead ends: 246262 [2021-11-02 18:45:38,869 INFO L226 Difference]: Without dead ends: 180664 [2021-11-02 18:45:39,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1839.82ms TimeCoverageRelationStatistics Valid=376, Invalid=1346, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 18:45:39,006 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 101746 mSDsluCounter, 152733 mSDsCounter, 0 mSdLazyCounter, 170055 mSolverCounterSat, 553 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 145056.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101746 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 170610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 607.16ms SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 170055 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 162551.54ms IncrementalHoareTripleChecker+Time [2021-11-02 18:45:39,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101746 Valid, 1602 Invalid, 170610 Unknown, 0 Unchecked, 607.16ms Time], IncrementalHoareTripleChecker [553 Valid, 170055 Invalid, 2 Unknown, 0 Unchecked, 162551.54ms Time] [2021-11-02 18:45:39,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180664 states. [2021-11-02 18:45:42,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180664 to 66102. [2021-11-02 18:45:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66102 states, 65129 states have (on average 1.4586589691228178) internal successors, (95001), 65201 states have internal predecessors, (95001), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-02 18:45:42,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66102 states to 66102 states and 96553 transitions. [2021-11-02 18:45:42,569 INFO L78 Accepts]: Start accepts. Automaton has 66102 states and 96553 transitions. Word has length 149 [2021-11-02 18:45:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:45:42,569 INFO L470 AbstractCegarLoop]: Abstraction has 66102 states and 96553 transitions. [2021-11-02 18:45:42,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 13 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:45:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 66102 states and 96553 transitions. [2021-11-02 18:45:42,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-02 18:45:42,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:45:42,601 INFO L514 BasicCegarLoop]: trace histogram [6, 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] [2021-11-02 18:45:42,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 18:45:42,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:45:42,827 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:45:42,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:45:42,828 INFO L85 PathProgramCache]: Analyzing trace with hash -459690833, now seen corresponding path program 1 times [2021-11-02 18:45:42,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:45:42,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415519851] [2021-11-02 18:45:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:45:42,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:45:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:45:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-02 18:45:42,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:45:42,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415519851] [2021-11-02 18:45:42,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415519851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:45:42,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:45:42,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:45:42,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767484649] [2021-11-02 18:45:42,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:45:42,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:45:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:45:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:45:42,996 INFO L87 Difference]: Start difference. First operand 66102 states and 96553 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:46:23,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:46:23,704 INFO L93 Difference]: Finished difference Result 193860 states and 285135 transitions. [2021-11-02 18:46:23,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:46:23,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-02 18:46:23,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:46:24,174 INFO L225 Difference]: With dead ends: 193860 [2021-11-02 18:46:24,174 INFO L226 Difference]: Without dead ends: 127830 [2021-11-02 18:46:24,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:46:24,349 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 11216 mSDsluCounter, 24726 mSDsCounter, 0 mSdLazyCounter, 40803 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29164.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11234 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 40857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 88.91ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 40803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33715.12ms IncrementalHoareTripleChecker+Time [2021-11-02 18:46:24,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11234 Valid, 387 Invalid, 40857 Unknown, 0 Unchecked, 88.91ms Time], IncrementalHoareTripleChecker [54 Valid, 40803 Invalid, 0 Unknown, 0 Unchecked, 33715.12ms Time] [2021-11-02 18:46:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127830 states. [2021-11-02 18:46:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127830 to 66198. [2021-11-02 18:46:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66198 states, 65225 states have (on average 1.4579839018781142) internal successors, (95097), 65297 states have internal predecessors, (95097), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-02 18:46:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66198 states to 66198 states and 96649 transitions. [2021-11-02 18:46:28,087 INFO L78 Accepts]: Start accepts. Automaton has 66198 states and 96649 transitions. Word has length 149 [2021-11-02 18:46:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:46:28,087 INFO L470 AbstractCegarLoop]: Abstraction has 66198 states and 96649 transitions. [2021-11-02 18:46:28,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:46:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 66198 states and 96649 transitions. [2021-11-02 18:46:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-02 18:46:28,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:46:28,269 INFO L514 BasicCegarLoop]: trace histogram [6, 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] [2021-11-02 18:46:28,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 18:46:28,269 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:46:28,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:46:28,270 INFO L85 PathProgramCache]: Analyzing trace with hash 156080927, now seen corresponding path program 1 times [2021-11-02 18:46:28,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:46:28,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391127021] [2021-11-02 18:46:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:46:28,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:46:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:46:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 18:46:28,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:46:28,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391127021] [2021-11-02 18:46:28,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391127021] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:46:28,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691403521] [2021-11-02 18:46:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:46:28,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:46:28,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:46:28,600 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 18:46:28,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 18:46:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:46:30,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 3604 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 18:46:30,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:46:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 18:46:30,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:46:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 18:46:31,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691403521] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:46:31,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:46:31,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2021-11-02 18:46:31,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363156083] [2021-11-02 18:46:31,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-02 18:46:31,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:46:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-02 18:46:31,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=304, Unknown=0, NotChecked=0, Total=506 [2021-11-02 18:46:31,051 INFO L87 Difference]: Start difference. First operand 66198 states and 96649 transitions. Second operand has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 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) [2021-11-02 18:46:32,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:46:35,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:46:37,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:46:39,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:46:41,485 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 [] [2021-11-02 18:47:21,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:47:21,315 INFO L93 Difference]: Finished difference Result 132330 states and 193221 transitions. [2021-11-02 18:47:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 18:47:21,315 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 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 153 [2021-11-02 18:47:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:47:21,531 INFO L225 Difference]: With dead ends: 132330 [2021-11-02 18:47:21,531 INFO L226 Difference]: Without dead ends: 66200 [2021-11-02 18:47:21,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 304.99ms TimeCoverageRelationStatistics Valid=202, Invalid=304, Unknown=0, NotChecked=0, Total=506 [2021-11-02 18:47:21,655 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 45960 mSDsCounter, 0 mSdLazyCounter, 54647 mSolverCounterSat, 11 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41759.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 54662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 106.34ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54647 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46792.66ms IncrementalHoareTripleChecker+Time [2021-11-02 18:47:21,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 576 Invalid, 54662 Unknown, 0 Unchecked, 106.34ms Time], IncrementalHoareTripleChecker [11 Valid, 54647 Invalid, 4 Unknown, 0 Unchecked, 46792.66ms Time] [2021-11-02 18:47:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66200 states. [2021-11-02 18:47:24,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66200 to 66200. [2021-11-02 18:47:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66200 states, 65227 states have (on average 1.4579698591074248) internal successors, (95099), 65299 states have internal predecessors, (95099), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-02 18:47:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66200 states to 66200 states and 96651 transitions. [2021-11-02 18:47:24,301 INFO L78 Accepts]: Start accepts. Automaton has 66200 states and 96651 transitions. Word has length 153 [2021-11-02 18:47:24,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:47:24,301 INFO L470 AbstractCegarLoop]: Abstraction has 66200 states and 96651 transitions. [2021-11-02 18:47:24,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 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) [2021-11-02 18:47:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 66200 states and 96651 transitions. [2021-11-02 18:47:24,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-02 18:47:24,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:47:24,334 INFO L514 BasicCegarLoop]: trace histogram [8, 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] [2021-11-02 18:47:24,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-02 18:47:24,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:47:24,542 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:47:24,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:47:24,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1273405537, now seen corresponding path program 2 times [2021-11-02 18:47:24,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:47:24,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713225157] [2021-11-02 18:47:24,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:47:24,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:47:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:47:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-02 18:47:25,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:47:25,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713225157] [2021-11-02 18:47:25,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713225157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:47:25,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:47:25,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:47:25,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489402909] [2021-11-02 18:47:25,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:47:25,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:47:25,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:47:25,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:47:25,502 INFO L87 Difference]: Start difference. First operand 66200 states and 96651 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2021-11-02 18:47:27,792 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 [] [2021-11-02 18:47:29,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:47:32,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:48:22,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:48:22,346 INFO L93 Difference]: Finished difference Result 132582 states and 193554 transitions. [2021-11-02 18:48:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 18:48:22,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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 155 [2021-11-02 18:48:22,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:48:22,584 INFO L225 Difference]: With dead ends: 132582 [2021-11-02 18:48:22,584 INFO L226 Difference]: Without dead ends: 66420 [2021-11-02 18:48:22,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 46.53ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:48:22,733 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 9103 mSDsluCounter, 45747 mSDsCounter, 0 mSdLazyCounter, 63383 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47117.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9103 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 63389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 130.60ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63383 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53192.83ms IncrementalHoareTripleChecker+Time [2021-11-02 18:48:22,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9103 Valid, 672 Invalid, 63389 Unknown, 0 Unchecked, 130.60ms Time], IncrementalHoareTripleChecker [3 Valid, 63383 Invalid, 3 Unknown, 0 Unchecked, 53192.83ms Time] [2021-11-02 18:48:22,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66420 states. [2021-11-02 18:48:25,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66420 to 66181. [2021-11-02 18:48:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66181 states, 65208 states have (on average 1.4579806158753528) internal successors, (95072), 65280 states have internal predecessors, (95072), 558 states have call successors, (558), 324 states have call predecessors, (558), 414 states have return successors, (994), 600 states have call predecessors, (994), 558 states have call successors, (994) [2021-11-02 18:48:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66181 states to 66181 states and 96624 transitions. [2021-11-02 18:48:25,532 INFO L78 Accepts]: Start accepts. Automaton has 66181 states and 96624 transitions. Word has length 155 [2021-11-02 18:48:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:48:25,532 INFO L470 AbstractCegarLoop]: Abstraction has 66181 states and 96624 transitions. [2021-11-02 18:48:25,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2021-11-02 18:48:25,533 INFO L276 IsEmpty]: Start isEmpty. Operand 66181 states and 96624 transitions. [2021-11-02 18:48:25,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-02 18:48:25,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:48:25,565 INFO L514 BasicCegarLoop]: trace histogram [8, 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] [2021-11-02 18:48:25,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 18:48:25,565 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:48:25,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:48:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1825887546, now seen corresponding path program 1 times [2021-11-02 18:48:25,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:48:25,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066934719] [2021-11-02 18:48:25,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:48:25,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Killed by 15