./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.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 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 16:26:04,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:26:04,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:26:04,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:26:04,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:26:04,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:26:04,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:26:04,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:26:04,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:26:04,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:26:04,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:26:04,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:26:04,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:26:04,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:26:04,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:26:04,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:26:04,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:26:04,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:26:04,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:26:04,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:26:04,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:26:04,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:26:04,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:26:04,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:26:04,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:26:04,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:26:04,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:26:04,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:26:04,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:26:04,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:26:04,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:26:04,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:26:04,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:26:04,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:26:04,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:26:04,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:26:04,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:26:04,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:26:04,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:26:04,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:26:04,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:26:04,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:26:04,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:26:04,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:26:04,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:26:04,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:26:04,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:26:04,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:26:04,484 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:26:04,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:26:04,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:26:04,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:26:04,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:26:04,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:26:04,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:26:04,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:26:04,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:26:04,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:26:04,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:26:04,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:26:04,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:26:04,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:26:04,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:26:04,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:26:04,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:26:04,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:26:04,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:26:04,498 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:26:04,498 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:26:04,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:26:04,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:26:04,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 [2021-11-06 16:26:04,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:26:04,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:26:04,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:26:04,767 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:26:04,768 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:26:04,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-11-06 16:26:04,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e545825b/4f7e3e31b503447f8e298231f78a8a4c/FLAG102cc352e [2021-11-06 16:26:05,503 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:26:05,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-11-06 16:26:05,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e545825b/4f7e3e31b503447f8e298231f78a8a4c/FLAG102cc352e [2021-11-06 16:26:05,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e545825b/4f7e3e31b503447f8e298231f78a8a4c [2021-11-06 16:26:05,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:26:05,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:26:05,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:26:05,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:26:05,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:26:05,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:26:05" (1/1) ... [2021-11-06 16:26:05,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95036e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:05, skipping insertion in model container [2021-11-06 16:26:05,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:26:05" (1/1) ... [2021-11-06 16:26:05,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:26:05,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:26:06,804 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2021-11-06 16:26:06,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:26:06,918 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:26:07,197 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2021-11-06 16:26:07,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:26:07,362 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:26:07,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:07 WrapperNode [2021-11-06 16:26:07,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:26:07,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:26:07,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:26:07,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:26:07,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:07" (1/1) ... [2021-11-06 16:26:07,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:07" (1/1) ... [2021-11-06 16:26:07,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:26:07,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:26:07,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:26:07,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:26:07,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:07" (1/1) ... [2021-11-06 16:26:07,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:07" (1/1) ... [2021-11-06 16:26:07,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:07" (1/1) ... [2021-11-06 16:26:07,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:07" (1/1) ... [2021-11-06 16:26:08,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:07" (1/1) ... [2021-11-06 16:26:08,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:07" (1/1) ... [2021-11-06 16:26:08,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:07" (1/1) ... [2021-11-06 16:26:08,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:26:08,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:26:08,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:26:08,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:26:08,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:07" (1/1) ... [2021-11-06 16:26:08,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:26:08,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:26:08,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 16:26:08,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 16:26:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 16:26:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:26:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:26:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:26:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:26:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:26:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:26:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:26:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:26:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 16:26:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:26:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:26:08,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:26:50,582 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:26:50,582 INFO L299 CfgBuilder]: Removed 2381 assume(true) statements. [2021-11-06 16:26:50,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:26:50 BoogieIcfgContainer [2021-11-06 16:26:50,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:26:50,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:26:50,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:26:50,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:26:50,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:26:05" (1/3) ... [2021-11-06 16:26:50,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ed5127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:26:50, skipping insertion in model container [2021-11-06 16:26:50,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:07" (2/3) ... [2021-11-06 16:26:50,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ed5127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:26:50, skipping insertion in model container [2021-11-06 16:26:50,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:26:50" (3/3) ... [2021-11-06 16:26:50,595 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-11-06 16:26:50,600 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:26:50,600 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-06 16:26:50,647 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:26:50,652 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 16:26:50,652 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-06 16:26:50,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 3163 states, 3153 states have (on average 1.457976530288614) internal successors, (4597), 3162 states have internal predecessors, (4597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:50,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-06 16:26:50,711 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:26:50,712 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:26:50,712 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 16:26:50,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:26:50,720 INFO L85 PathProgramCache]: Analyzing trace with hash -449056014, now seen corresponding path program 1 times [2021-11-06 16:26:50,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:26:50,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498785685] [2021-11-06 16:26:50,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:26:50,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:26:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:26:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:26:51,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:26:51,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498785685] [2021-11-06 16:26:51,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498785685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:26:51,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:26:51,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:26:51,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031703603] [2021-11-06 16:26:51,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:26:51,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:26:51,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:26:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:26:51,475 INFO L87 Difference]: Start difference. First operand has 3163 states, 3153 states have (on average 1.457976530288614) internal successors, (4597), 3162 states have internal predecessors, (4597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:26:54,073 INFO L93 Difference]: Finished difference Result 9406 states and 13684 transitions. [2021-11-06 16:26:54,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:26:54,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-11-06 16:26:54,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:26:54,125 INFO L225 Difference]: With dead ends: 9406 [2021-11-06 16:26:54,125 INFO L226 Difference]: Without dead ends: 6234 [2021-11-06 16:26:54,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:26:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-11-06 16:26:54,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 6222. [2021-11-06 16:26:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6222 states, 6213 states have (on average 1.4530822469016578) internal successors, (9028), 6221 states have internal predecessors, (9028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:54,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 9028 transitions. [2021-11-06 16:26:54,359 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 9028 transitions. Word has length 14 [2021-11-06 16:26:54,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:26:54,360 INFO L470 AbstractCegarLoop]: Abstraction has 6222 states and 9028 transitions. [2021-11-06 16:26:54,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 9028 transitions. [2021-11-06 16:26:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-06 16:26:54,362 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:26:54,362 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:26:54,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:26:54,363 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 16:26:54,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:26:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash 284486342, now seen corresponding path program 1 times [2021-11-06 16:26:54,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:26:54,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320669908] [2021-11-06 16:26:54,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:26:54,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:26:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:26:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:26:54,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:26:54,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320669908] [2021-11-06 16:26:54,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320669908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:26:54,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:26:54,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:26:54,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73152008] [2021-11-06 16:26:54,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:26:54,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:26:54,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:26:54,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:26:54,631 INFO L87 Difference]: Start difference. First operand 6222 states and 9028 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:26:55,303 INFO L93 Difference]: Finished difference Result 18386 states and 26674 transitions. [2021-11-06 16:26:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:26:55,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2021-11-06 16:26:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:26:55,353 INFO L225 Difference]: With dead ends: 18386 [2021-11-06 16:26:55,354 INFO L226 Difference]: Without dead ends: 12167 [2021-11-06 16:26:55,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:26:55,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12167 states. [2021-11-06 16:26:55,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12167 to 12155. [2021-11-06 16:26:55,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12155 states, 12146 states have (on average 1.4520006586530545) internal successors, (17636), 12154 states have internal predecessors, (17636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12155 states to 12155 states and 17636 transitions. [2021-11-06 16:26:55,792 INFO L78 Accepts]: Start accepts. Automaton has 12155 states and 17636 transitions. Word has length 15 [2021-11-06 16:26:55,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:26:55,793 INFO L470 AbstractCegarLoop]: Abstraction has 12155 states and 17636 transitions. [2021-11-06 16:26:55,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:55,794 INFO L276 IsEmpty]: Start isEmpty. Operand 12155 states and 17636 transitions. [2021-11-06 16:26:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-06 16:26:55,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:26:55,799 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:26:55,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:26:55,799 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 16:26:55,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:26:55,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1022164411, now seen corresponding path program 1 times [2021-11-06 16:26:55,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:26:55,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382369472] [2021-11-06 16:26:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:26:55,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:26:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:26:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:26:56,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:26:56,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382369472] [2021-11-06 16:26:56,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382369472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:26:56,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:26:56,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:26:56,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304158480] [2021-11-06 16:26:56,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:26:56,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:26:56,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:26:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:26:56,077 INFO L87 Difference]: Start difference. First operand 12155 states and 17636 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:56,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:26:56,227 INFO L93 Difference]: Finished difference Result 12155 states and 17636 transitions. [2021-11-06 16:26:56,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:26:56,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2021-11-06 16:26:56,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:26:56,286 INFO L225 Difference]: With dead ends: 12155 [2021-11-06 16:26:56,287 INFO L226 Difference]: Without dead ends: 12153 [2021-11-06 16:26:56,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:26:56,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12153 states. [2021-11-06 16:26:56,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12153 to 12153. [2021-11-06 16:26:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12153 states, 12145 states have (on average 1.451955537258131) internal successors, (17634), 12152 states have internal predecessors, (17634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12153 states to 12153 states and 17634 transitions. [2021-11-06 16:26:56,625 INFO L78 Accepts]: Start accepts. Automaton has 12153 states and 17634 transitions. Word has length 19 [2021-11-06 16:26:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:26:56,625 INFO L470 AbstractCegarLoop]: Abstraction has 12153 states and 17634 transitions. [2021-11-06 16:26:56,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 12153 states and 17634 transitions. [2021-11-06 16:26:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-06 16:26:56,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:26:56,629 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:26:56,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:26:56,629 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 16:26:56,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:26:56,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1622342718, now seen corresponding path program 1 times [2021-11-06 16:26:56,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:26:56,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562768640] [2021-11-06 16:26:56,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:26:56,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:26:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:26:57,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:26:57,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:26:57,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562768640] [2021-11-06 16:26:57,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562768640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:26:57,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:26:57,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:26:57,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47652253] [2021-11-06 16:26:57,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:26:57,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:26:57,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:26:57,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:26:57,059 INFO L87 Difference]: Start difference. First operand 12153 states and 17634 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:57,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:26:57,225 INFO L93 Difference]: Finished difference Result 12153 states and 17634 transitions. [2021-11-06 16:26:57,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:26:57,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2021-11-06 16:26:57,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:26:57,254 INFO L225 Difference]: With dead ends: 12153 [2021-11-06 16:26:57,255 INFO L226 Difference]: Without dead ends: 12151 [2021-11-06 16:26:57,260 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:26:57,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12151 states. [2021-11-06 16:26:57,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12151 to 12151. [2021-11-06 16:26:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12151 states, 12144 states have (on average 1.4519104084321475) internal successors, (17632), 12150 states have internal predecessors, (17632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:57,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12151 states to 12151 states and 17632 transitions. [2021-11-06 16:26:57,563 INFO L78 Accepts]: Start accepts. Automaton has 12151 states and 17632 transitions. Word has length 20 [2021-11-06 16:26:57,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:26:57,563 INFO L470 AbstractCegarLoop]: Abstraction has 12151 states and 17632 transitions. [2021-11-06 16:26:57,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:57,564 INFO L276 IsEmpty]: Start isEmpty. Operand 12151 states and 17632 transitions. [2021-11-06 16:26:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-06 16:26:57,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:26:57,564 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:26:57,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 16:26:57,565 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 16:26:57,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:26:57,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1246966235, now seen corresponding path program 1 times [2021-11-06 16:26:57,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:26:57,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779719812] [2021-11-06 16:26:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:26:57,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:26:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:26:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:26:57,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:26:57,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779719812] [2021-11-06 16:26:57,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779719812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:26:57,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:26:57,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:26:57,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195625005] [2021-11-06 16:26:57,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:26:57,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:26:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:26:57,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:26:57,836 INFO L87 Difference]: Start difference. First operand 12151 states and 17632 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:58,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:26:58,387 INFO L93 Difference]: Finished difference Result 36379 states and 52814 transitions. [2021-11-06 16:26:58,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:26:58,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2021-11-06 16:26:58,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:26:58,451 INFO L225 Difference]: With dead ends: 36379 [2021-11-06 16:26:58,452 INFO L226 Difference]: Without dead ends: 24225 [2021-11-06 16:26:58,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:26:58,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24225 states. [2021-11-06 16:26:59,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24225 to 24195. [2021-11-06 16:26:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24195 states, 24188 states have (on average 1.4524971060029768) internal successors, (35133), 24194 states have internal predecessors, (35133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:59,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24195 states to 24195 states and 35133 transitions. [2021-11-06 16:26:59,177 INFO L78 Accepts]: Start accepts. Automaton has 24195 states and 35133 transitions. Word has length 21 [2021-11-06 16:26:59,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:26:59,177 INFO L470 AbstractCegarLoop]: Abstraction has 24195 states and 35133 transitions. [2021-11-06 16:26:59,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:26:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 24195 states and 35133 transitions. [2021-11-06 16:26:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-06 16:26:59,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:26:59,180 INFO L513 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] [2021-11-06 16:26:59,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 16:26:59,181 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 16:26:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:26:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1452142114, now seen corresponding path program 1 times [2021-11-06 16:26:59,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:26:59,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933638115] [2021-11-06 16:26:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:26:59,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:26:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:26:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:26:59,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:26:59,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933638115] [2021-11-06 16:26:59,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933638115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:26:59,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:26:59,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:26:59,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264751100] [2021-11-06 16:26:59,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:26:59,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:26:59,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:26:59,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:26:59,504 INFO L87 Difference]: Start difference. First operand 24195 states and 35133 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:02,631 INFO L93 Difference]: Finished difference Result 48400 states and 70277 transitions. [2021-11-06 16:27:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 16:27:02,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 38 [2021-11-06 16:27:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:02,692 INFO L225 Difference]: With dead ends: 48400 [2021-11-06 16:27:02,693 INFO L226 Difference]: Without dead ends: 24204 [2021-11-06 16:27:02,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:27:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24204 states. [2021-11-06 16:27:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24204 to 24197. [2021-11-06 16:27:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24197 states, 24190 states have (on average 1.452294336502687) internal successors, (35131), 24196 states have internal predecessors, (35131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:03,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24197 states to 24197 states and 35131 transitions. [2021-11-06 16:27:03,389 INFO L78 Accepts]: Start accepts. Automaton has 24197 states and 35131 transitions. Word has length 38 [2021-11-06 16:27:03,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:03,390 INFO L470 AbstractCegarLoop]: Abstraction has 24197 states and 35131 transitions. [2021-11-06 16:27:03,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:03,390 INFO L276 IsEmpty]: Start isEmpty. Operand 24197 states and 35131 transitions. [2021-11-06 16:27:03,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 16:27:03,394 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:03,395 INFO L513 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] [2021-11-06 16:27:03,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 16:27:03,395 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 16:27:03,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:03,396 INFO L85 PathProgramCache]: Analyzing trace with hash 950886281, now seen corresponding path program 1 times [2021-11-06 16:27:03,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:03,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075149505] [2021-11-06 16:27:03,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:03,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:27:03,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:03,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075149505] [2021-11-06 16:27:03,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075149505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:03,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:03,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:27:03,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141264025] [2021-11-06 16:27:03,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:27:03,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:03,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:27:03,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:27:03,686 INFO L87 Difference]: Start difference. First operand 24197 states and 35131 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 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) [2021-11-06 16:27:04,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:04,757 INFO L93 Difference]: Finished difference Result 72538 states and 105323 transitions. [2021-11-06 16:27:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 16:27:04,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 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 [2021-11-06 16:27:04,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:04,847 INFO L225 Difference]: With dead ends: 72538 [2021-11-06 16:27:04,848 INFO L226 Difference]: Without dead ends: 48344 [2021-11-06 16:27:04,899 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:27:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48344 states. [2021-11-06 16:27:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48344 to 24205. [2021-11-06 16:27:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24205 states, 24198 states have (on average 1.4521448053558146) internal successors, (35139), 24204 states have internal predecessors, (35139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24205 states to 24205 states and 35139 transitions. [2021-11-06 16:27:05,735 INFO L78 Accepts]: Start accepts. Automaton has 24205 states and 35139 transitions. Word has length 49 [2021-11-06 16:27:05,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:05,736 INFO L470 AbstractCegarLoop]: Abstraction has 24205 states and 35139 transitions. [2021-11-06 16:27:05,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 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) [2021-11-06 16:27:05,736 INFO L276 IsEmpty]: Start isEmpty. Operand 24205 states and 35139 transitions. [2021-11-06 16:27:05,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 16:27:05,739 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:05,739 INFO L513 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] [2021-11-06 16:27:05,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 16:27:05,739 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 16:27:05,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash 374161665, now seen corresponding path program 1 times [2021-11-06 16:27:05,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:05,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055760428] [2021-11-06 16:27:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:05,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:27:06,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:06,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055760428] [2021-11-06 16:27:06,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055760428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:06,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:06,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:27:06,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438390635] [2021-11-06 16:27:06,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:27:06,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:06,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:27:06,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:06,125 INFO L87 Difference]: Start difference. First operand 24205 states and 35139 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 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) [2021-11-06 16:27:09,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:09,534 INFO L93 Difference]: Finished difference Result 48183 states and 69939 transitions. [2021-11-06 16:27:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:27:09,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 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 [2021-11-06 16:27:09,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:09,575 INFO L225 Difference]: With dead ends: 48183 [2021-11-06 16:27:09,575 INFO L226 Difference]: Without dead ends: 23981 [2021-11-06 16:27:09,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:09,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23981 states. [2021-11-06 16:27:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23981 to 23981. [2021-11-06 16:27:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23981 states, 23974 states have (on average 1.4034787686660548) internal successors, (33647), 23980 states have internal predecessors, (33647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:10,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23981 states to 23981 states and 33647 transitions. [2021-11-06 16:27:10,180 INFO L78 Accepts]: Start accepts. Automaton has 23981 states and 33647 transitions. Word has length 51 [2021-11-06 16:27:10,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:10,180 INFO L470 AbstractCegarLoop]: Abstraction has 23981 states and 33647 transitions. [2021-11-06 16:27:10,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 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) [2021-11-06 16:27:10,180 INFO L276 IsEmpty]: Start isEmpty. Operand 23981 states and 33647 transitions. [2021-11-06 16:27:10,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 16:27:10,183 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:10,183 INFO L513 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] [2021-11-06 16:27:10,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 16:27:10,183 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 16:27:10,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:10,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1119219130, now seen corresponding path program 1 times [2021-11-06 16:27:10,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:10,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114207010] [2021-11-06 16:27:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:10,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:10,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:27:10,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:10,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114207010] [2021-11-06 16:27:10,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114207010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:10,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:10,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:27:10,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086802015] [2021-11-06 16:27:10,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:27:10,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:10,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:27:10,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:10,418 INFO L87 Difference]: Start difference. First operand 23981 states and 33647 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:14,022 INFO L93 Difference]: Finished difference Result 71919 states and 100909 transitions. [2021-11-06 16:27:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:27:14,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2021-11-06 16:27:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:14,096 INFO L225 Difference]: With dead ends: 71919 [2021-11-06 16:27:14,097 INFO L226 Difference]: Without dead ends: 47941 [2021-11-06 16:27:14,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47941 states. [2021-11-06 16:27:15,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47941 to 47897. [2021-11-06 16:27:15,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47897 states, 47890 states have (on average 1.4035706828147838) internal successors, (67217), 47896 states have internal predecessors, (67217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47897 states to 47897 states and 67217 transitions. [2021-11-06 16:27:15,344 INFO L78 Accepts]: Start accepts. Automaton has 47897 states and 67217 transitions. Word has length 53 [2021-11-06 16:27:15,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:15,344 INFO L470 AbstractCegarLoop]: Abstraction has 47897 states and 67217 transitions. [2021-11-06 16:27:15,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:15,345 INFO L276 IsEmpty]: Start isEmpty. Operand 47897 states and 67217 transitions. [2021-11-06 16:27:15,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 16:27:15,348 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:15,349 INFO L513 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] [2021-11-06 16:27:15,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 16:27:15,349 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 16:27:15,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:15,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1124120767, now seen corresponding path program 1 times [2021-11-06 16:27:15,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:15,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385190118] [2021-11-06 16:27:15,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:15,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:27:15,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:15,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385190118] [2021-11-06 16:27:15,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385190118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:15,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:15,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:27:15,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162559429] [2021-11-06 16:27:15,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:27:15,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:27:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:15,571 INFO L87 Difference]: Start difference. First operand 47897 states and 67217 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:19,965 INFO L93 Difference]: Finished difference Result 119645 states and 168028 transitions. [2021-11-06 16:27:19,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:27:19,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-06 16:27:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:20,091 INFO L225 Difference]: With dead ends: 119645 [2021-11-06 16:27:20,092 INFO L226 Difference]: Without dead ends: 71751 [2021-11-06 16:27:20,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:20,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71751 states. [2021-11-06 16:27:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71751 to 71741. [2021-11-06 16:27:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71741 states, 71734 states have (on average 1.4029191178520646) internal successors, (100637), 71740 states have internal predecessors, (100637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:22,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71741 states to 71741 states and 100637 transitions. [2021-11-06 16:27:22,271 INFO L78 Accepts]: Start accepts. Automaton has 71741 states and 100637 transitions. Word has length 55 [2021-11-06 16:27:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:22,271 INFO L470 AbstractCegarLoop]: Abstraction has 71741 states and 100637 transitions. [2021-11-06 16:27:22,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:22,272 INFO L276 IsEmpty]: Start isEmpty. Operand 71741 states and 100637 transitions. [2021-11-06 16:27:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 16:27:22,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:22,278 INFO L513 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] [2021-11-06 16:27:22,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 16:27:22,278 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 16:27:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1162698632, now seen corresponding path program 1 times [2021-11-06 16:27:22,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:22,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310913908] [2021-11-06 16:27:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:22,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:27:22,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:22,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310913908] [2021-11-06 16:27:22,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310913908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:22,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:22,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 16:27:22,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401484737] [2021-11-06 16:27:22,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:27:22,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:22,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:27:22,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:27:22,657 INFO L87 Difference]: Start difference. First operand 71741 states and 100637 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:29,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:29,238 INFO L93 Difference]: Finished difference Result 279097 states and 391376 transitions. [2021-11-06 16:27:29,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 16:27:29,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 76 [2021-11-06 16:27:29,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:29,733 INFO L225 Difference]: With dead ends: 279097 [2021-11-06 16:27:29,733 INFO L226 Difference]: Without dead ends: 207359 [2021-11-06 16:27:29,851 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:27:30,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207359 states. [2021-11-06 16:27:33,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207359 to 95585. [2021-11-06 16:27:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95585 states, 95578 states have (on average 1.4042666722467514) internal successors, (134217), 95584 states have internal predecessors, (134217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95585 states to 95585 states and 134217 transitions. [2021-11-06 16:27:33,790 INFO L78 Accepts]: Start accepts. Automaton has 95585 states and 134217 transitions. Word has length 76 [2021-11-06 16:27:33,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:33,790 INFO L470 AbstractCegarLoop]: Abstraction has 95585 states and 134217 transitions. [2021-11-06 16:27:33,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 95585 states and 134217 transitions. [2021-11-06 16:27:33,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 16:27:33,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:33,799 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-06 16:27:33,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 16:27:33,800 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 16:27:33,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:33,800 INFO L85 PathProgramCache]: Analyzing trace with hash 925626603, now seen corresponding path program 1 times [2021-11-06 16:27:33,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:33,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230797205] [2021-11-06 16:27:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:33,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:27:34,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:34,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230797205] [2021-11-06 16:27:34,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230797205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:34,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:34,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:27:34,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103436675] [2021-11-06 16:27:34,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:27:34,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:34,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:27:34,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:34,031 INFO L87 Difference]: Start difference. First operand 95585 states and 134217 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:40,189 INFO L93 Difference]: Finished difference Result 215021 states and 302020 transitions. [2021-11-06 16:27:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:27:40,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 77 [2021-11-06 16:27:40,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:40,424 INFO L225 Difference]: With dead ends: 215021 [2021-11-06 16:27:40,424 INFO L226 Difference]: Without dead ends: 119439 [2021-11-06 16:27:40,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:40,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119439 states.