./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.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 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:11:46,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:11:46,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:11:46,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:11:46,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:11:46,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:11:46,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:11:46,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:11:46,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:11:46,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:11:46,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:11:46,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:11:46,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:11:46,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:11:46,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:11:46,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:11:46,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:11:46,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:11:46,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:11:46,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:11:46,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:11:46,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:11:46,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:11:46,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:11:46,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:11:46,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:11:46,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:11:46,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:11:46,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:11:46,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:11:46,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:11:46,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:11:46,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:11:46,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:11:46,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:11:46,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:11:46,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:11:46,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:11:46,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:11:46,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:11:46,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:11:46,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:11:46,433 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:11:46,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:11:46,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:11:46,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:11:46,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:11:46,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:11:46,434 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:11:46,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:11:46,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:11:46,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:11:46,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:11:46,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:11:46,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:11:46,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:11:46,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:11:46,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:11:46,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:11:46,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:11:46,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:11:46,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:11:46,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:11:46,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:11:46,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:11:46,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:11:46,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:11:46,438 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:11:46,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:11:46,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:11:46,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:11:46,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 [2021-11-07 13:11:46,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:11:46,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:11:46,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:11:46,601 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:11:46,603 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:11:46,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-11-07 13:11:46,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5cc2631b/e9b1c206aaac49fa897784db590fa1f6/FLAG5fcf52a4a [2021-11-07 13:11:47,232 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:11:47,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-11-07 13:11:47,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5cc2631b/e9b1c206aaac49fa897784db590fa1f6/FLAG5fcf52a4a [2021-11-07 13:11:47,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5cc2631b/e9b1c206aaac49fa897784db590fa1f6 [2021-11-07 13:11:47,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:11:47,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:11:47,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:11:47,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:11:47,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:11:47,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:47" (1/1) ... [2021-11-07 13:11:47,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71de511f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:47, skipping insertion in model container [2021-11-07 13:11:47,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:47" (1/1) ... [2021-11-07 13:11:47,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:11:47,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:11:48,312 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2021-11-07 13:11:48,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:11:48,590 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:11:48,680 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2021-11-07 13:11:48,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:11:48,813 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:11:48,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48 WrapperNode [2021-11-07 13:11:48,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:11:48,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:11:48,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:11:48,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:11:48,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48" (1/1) ... [2021-11-07 13:11:48,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48" (1/1) ... [2021-11-07 13:11:49,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:11:49,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:11:49,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:11:49,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:11:49,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48" (1/1) ... [2021-11-07 13:11:49,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48" (1/1) ... [2021-11-07 13:11:49,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48" (1/1) ... [2021-11-07 13:11:49,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48" (1/1) ... [2021-11-07 13:11:49,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48" (1/1) ... [2021-11-07 13:11:50,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48" (1/1) ... [2021-11-07 13:11:50,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48" (1/1) ... [2021-11-07 13:11:50,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:11:50,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:11:50,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:11:50,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:11:50,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48" (1/1) ... [2021-11-07 13:11:50,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:11:50,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:11:50,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 13:11:50,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 13:11:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:11:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:11:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:11:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:11:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:11:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:11:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:11:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:11:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:11:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:11:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:11:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:11:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:11:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:11:50,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:15:39,591 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:15:39,591 INFO L299 CfgBuilder]: Removed 3056 assume(true) statements. [2021-11-07 13:15:39,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:39 BoogieIcfgContainer [2021-11-07 13:15:39,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:15:39,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:15:39,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:15:39,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:15:39,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:11:47" (1/3) ... [2021-11-07 13:15:39,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1f4d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:39, skipping insertion in model container [2021-11-07 13:15:39,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48" (2/3) ... [2021-11-07 13:15:39,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1f4d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:39, skipping insertion in model container [2021-11-07 13:15:39,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:39" (3/3) ... [2021-11-07 13:15:39,602 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-11-07 13:15:39,605 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:15:39,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 13:15:39,647 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:15:39,651 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 13:15:39,651 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 13:15:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 2582 states, 2580 states have (on average 1.4275193798449612) internal successors, (3683), 2581 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:39,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 13:15:39,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:15:39,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:15:39,704 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:15:39,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:15:39,708 INFO L85 PathProgramCache]: Analyzing trace with hash -745159078, now seen corresponding path program 1 times [2021-11-07 13:15:39,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:15:39,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814879538] [2021-11-07 13:15:39,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:15:39,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:15:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:15:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:15:40,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:15:40,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814879538] [2021-11-07 13:15:40,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814879538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:15:40,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:15:40,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:15:40,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209661572] [2021-11-07 13:15:40,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:15:40,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:15:40,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:15:40,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:15:40,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:15:40,218 INFO L87 Difference]: Start difference. First operand has 2582 states, 2580 states have (on average 1.4275193798449612) internal successors, (3683), 2581 states have internal predecessors, (3683), 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 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:42,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:15:42,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:15:42,573 INFO L93 Difference]: Finished difference Result 7698 states and 10987 transitions. [2021-11-07 13:15:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:15:42,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-11-07 13:15:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:15:42,605 INFO L225 Difference]: With dead ends: 7698 [2021-11-07 13:15:42,606 INFO L226 Difference]: Without dead ends: 5089 [2021-11-07 13:15:42,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:15:42,622 INFO L933 BasicCegarLoop]: 3393 mSDtfsCounter, 3340 mSDsluCounter, 3382 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2065.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3340 SdHoareTripleChecker+Valid, 6775 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.59ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2184.50ms IncrementalHoareTripleChecker+Time [2021-11-07 13:15:42,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3340 Valid, 6775 Invalid, 15 Unknown, 0 Unchecked, 17.59ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2184.50ms Time] [2021-11-07 13:15:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5089 states. [2021-11-07 13:15:42,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5089 to 5089. [2021-11-07 13:15:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 1.3128930817610063) internal successors, (6680), 5088 states have internal predecessors, (6680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 6680 transitions. [2021-11-07 13:15:42,816 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 6680 transitions. Word has length 22 [2021-11-07 13:15:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:15:42,816 INFO L470 AbstractCegarLoop]: Abstraction has 5089 states and 6680 transitions. [2021-11-07 13:15:42,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:42,818 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 6680 transitions. [2021-11-07 13:15:42,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 13:15:42,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:15:42,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:15:42,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:15:42,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:15:42,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:15:42,826 INFO L85 PathProgramCache]: Analyzing trace with hash -601537533, now seen corresponding path program 1 times [2021-11-07 13:15:42,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:15:42,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190966004] [2021-11-07 13:15:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:15:42,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:15:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:15:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:15:43,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:15:43,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190966004] [2021-11-07 13:15:43,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190966004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:15:43,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:15:43,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:15:43,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756041053] [2021-11-07 13:15:43,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:15:43,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:15:43,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:15:43,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:15:43,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:15:43,043 INFO L87 Difference]: Start difference. First operand 5089 states and 6680 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:44,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:15:44,145 INFO L93 Difference]: Finished difference Result 15229 states and 19997 transitions. [2021-11-07 13:15:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:15:44,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2021-11-07 13:15:44,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:15:44,179 INFO L225 Difference]: With dead ends: 15229 [2021-11-07 13:15:44,180 INFO L226 Difference]: Without dead ends: 10153 [2021-11-07 13:15:44,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 111.72ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:15:44,197 INFO L933 BasicCegarLoop]: 3306 mSDtfsCounter, 3324 mSDsluCounter, 9881 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 774.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3324 SdHoareTripleChecker+Valid, 13187 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.87ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 839.09ms IncrementalHoareTripleChecker+Time [2021-11-07 13:15:44,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3324 Valid, 13187 Invalid, 281 Unknown, 0 Unchecked, 18.87ms Time], IncrementalHoareTripleChecker [9 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 839.09ms Time] [2021-11-07 13:15:44,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10153 states. [2021-11-07 13:15:44,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10153 to 10089. [2021-11-07 13:15:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10089 states, 10088 states have (on average 1.3117565424266455) internal successors, (13233), 10088 states have internal predecessors, (13233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:44,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10089 states to 10089 states and 13233 transitions. [2021-11-07 13:15:44,410 INFO L78 Accepts]: Start accepts. Automaton has 10089 states and 13233 transitions. Word has length 25 [2021-11-07 13:15:44,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:15:44,411 INFO L470 AbstractCegarLoop]: Abstraction has 10089 states and 13233 transitions. [2021-11-07 13:15:44,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:44,412 INFO L276 IsEmpty]: Start isEmpty. Operand 10089 states and 13233 transitions. [2021-11-07 13:15:44,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 13:15:44,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:15:44,427 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:15:44,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:15:44,428 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:15:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:15:44,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1521844101, now seen corresponding path program 1 times [2021-11-07 13:15:44,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:15:44,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873620933] [2021-11-07 13:15:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:15:44,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:15:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:15:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:15:44,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:15:44,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873620933] [2021-11-07 13:15:44,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873620933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:15:44,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:15:44,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:15:44,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364241988] [2021-11-07 13:15:44,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:15:44,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:15:44,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:15:44,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:15:44,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:15:44,651 INFO L87 Difference]: Start difference. First operand 10089 states and 13233 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:15:46,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:15:48,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:15:50,846 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:15:52,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:15:54,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:15:57,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:15:59,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:15:59,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:15:59,399 INFO L93 Difference]: Finished difference Result 36818 states and 48257 transitions. [2021-11-07 13:15:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:15:59,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-11-07 13:15:59,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:15:59,483 INFO L225 Difference]: With dead ends: 36818 [2021-11-07 13:15:59,483 INFO L226 Difference]: Without dead ends: 26747 [2021-11-07 13:15:59,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:15:59,510 INFO L933 BasicCegarLoop]: 5765 mSDtfsCounter, 5521 mSDsluCounter, 6680 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14212.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5521 SdHoareTripleChecker+Valid, 12445 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.50ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14443.86ms IncrementalHoareTripleChecker+Time [2021-11-07 13:15:59,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5521 Valid, 12445 Invalid, 78 Unknown, 0 Unchecked, 12.50ms Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 7 Unknown, 0 Unchecked, 14443.86ms Time] [2021-11-07 13:15:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26747 states. [2021-11-07 13:15:59,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26747 to 17313. [2021-11-07 13:15:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17313 states, 17312 states have (on average 1.3104205175600738) internal successors, (22686), 17312 states have internal predecessors, (22686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17313 states to 17313 states and 22686 transitions. [2021-11-07 13:16:00,023 INFO L78 Accepts]: Start accepts. Automaton has 17313 states and 22686 transitions. Word has length 105 [2021-11-07 13:16:00,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:16:00,023 INFO L470 AbstractCegarLoop]: Abstraction has 17313 states and 22686 transitions. [2021-11-07 13:16:00,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:00,024 INFO L276 IsEmpty]: Start isEmpty. Operand 17313 states and 22686 transitions. [2021-11-07 13:16:00,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 13:16:00,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:00,042 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:16:00,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:16:00,043 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:00,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:00,043 INFO L85 PathProgramCache]: Analyzing trace with hash -266526624, now seen corresponding path program 1 times [2021-11-07 13:16:00,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:00,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016937749] [2021-11-07 13:16:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:00,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:16:00,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:00,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016937749] [2021-11-07 13:16:00,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016937749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:00,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:16:00,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:16:00,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235753458] [2021-11-07 13:16:00,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:00,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:16:00,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:00,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:16:00,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:16:00,200 INFO L87 Difference]: Start difference. First operand 17313 states and 22686 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:02,266 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:04,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:06,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:08,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:10,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:12,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:14,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:16:15,013 INFO L93 Difference]: Finished difference Result 51277 states and 67186 transitions. [2021-11-07 13:16:15,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:16:15,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-11-07 13:16:15,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:16:15,094 INFO L225 Difference]: With dead ends: 51277 [2021-11-07 13:16:15,094 INFO L226 Difference]: Without dead ends: 41206 [2021-11-07 13:16:15,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:16:15,121 INFO L933 BasicCegarLoop]: 5748 mSDtfsCounter, 7919 mSDsluCounter, 6664 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14183.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7919 SdHoareTripleChecker+Valid, 12412 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.27ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14396.74ms IncrementalHoareTripleChecker+Time [2021-11-07 13:16:15,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7919 Valid, 12412 Invalid, 76 Unknown, 0 Unchecked, 12.27ms Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 7 Unknown, 0 Unchecked, 14396.74ms Time] [2021-11-07 13:16:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41206 states. [2021-11-07 13:16:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41206 to 26673. [2021-11-07 13:16:15,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26673 states, 26672 states have (on average 1.3104004199160169) internal successors, (34951), 26672 states have internal predecessors, (34951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26673 states to 26673 states and 34951 transitions. [2021-11-07 13:16:15,842 INFO L78 Accepts]: Start accepts. Automaton has 26673 states and 34951 transitions. Word has length 106 [2021-11-07 13:16:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:16:15,842 INFO L470 AbstractCegarLoop]: Abstraction has 26673 states and 34951 transitions. [2021-11-07 13:16:15,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 26673 states and 34951 transitions. [2021-11-07 13:16:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 13:16:15,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:15,866 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:16:15,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:16:15,867 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:15,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:15,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1180737615, now seen corresponding path program 1 times [2021-11-07 13:16:15,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:15,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845326892] [2021-11-07 13:16:15,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:15,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:16:15,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:15,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845326892] [2021-11-07 13:16:15,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845326892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:15,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:16:15,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:16:15,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21410891] [2021-11-07 13:16:15,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:15,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:16:15,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:15,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:16:15,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:16:15,996 INFO L87 Difference]: Start difference. First operand 26673 states and 34951 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:17,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:18,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:20,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:23,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:25,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:25,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:16:25,527 INFO L93 Difference]: Finished difference Result 76549 states and 100289 transitions. [2021-11-07 13:16:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:16:25,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2021-11-07 13:16:25,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:16:25,633 INFO L225 Difference]: With dead ends: 76549 [2021-11-07 13:16:25,634 INFO L226 Difference]: Without dead ends: 57118 [2021-11-07 13:16:25,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:16:25,673 INFO L933 BasicCegarLoop]: 5748 mSDtfsCounter, 7924 mSDsluCounter, 6664 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8663.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7924 SdHoareTripleChecker+Valid, 12412 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.95ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8795.93ms IncrementalHoareTripleChecker+Time [2021-11-07 13:16:25,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7924 Valid, 12412 Invalid, 74 Unknown, 0 Unchecked, 11.95ms Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 3 Unknown, 0 Unchecked, 8795.93ms Time] [2021-11-07 13:16:25,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57118 states. [2021-11-07 13:16:26,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57118 to 35341. [2021-11-07 13:16:26,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35341 states, 35340 states have (on average 1.310243350311262) internal successors, (46304), 35340 states have internal predecessors, (46304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35341 states to 35341 states and 46304 transitions. [2021-11-07 13:16:26,642 INFO L78 Accepts]: Start accepts. Automaton has 35341 states and 46304 transitions. Word has length 107 [2021-11-07 13:16:26,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:16:26,642 INFO L470 AbstractCegarLoop]: Abstraction has 35341 states and 46304 transitions. [2021-11-07 13:16:26,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:26,643 INFO L276 IsEmpty]: Start isEmpty. Operand 35341 states and 46304 transitions. [2021-11-07 13:16:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 13:16:26,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:26,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:16:26,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:16:26,658 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:26,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:26,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1171906616, now seen corresponding path program 1 times [2021-11-07 13:16:26,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:26,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438827846] [2021-11-07 13:16:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:26,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:16:26,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:26,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438827846] [2021-11-07 13:16:26,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438827846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:26,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:16:26,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:16:26,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206487831] [2021-11-07 13:16:26,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:26,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:16:26,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:26,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:16:26,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:16:26,808 INFO L87 Difference]: Start difference. First operand 35341 states and 46304 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:28,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:30,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:32,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:35,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:36,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:16:36,433 INFO L93 Difference]: Finished difference Result 124752 states and 163293 transitions. [2021-11-07 13:16:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:16:36,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-11-07 13:16:36,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:16:36,566 INFO L225 Difference]: With dead ends: 124752 [2021-11-07 13:16:36,567 INFO L226 Difference]: Without dead ends: 89429 [2021-11-07 13:16:36,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:16:36,626 INFO L933 BasicCegarLoop]: 5757 mSDtfsCounter, 5526 mSDsluCounter, 6663 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8175.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5526 SdHoareTripleChecker+Valid, 12420 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.56ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8275.68ms IncrementalHoareTripleChecker+Time [2021-11-07 13:16:36,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5526 Valid, 12420 Invalid, 69 Unknown, 0 Unchecked, 11.56ms Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 4 Unknown, 0 Unchecked, 8275.68ms Time] [2021-11-07 13:16:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89429 states. [2021-11-07 13:16:37,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89429 to 57147. [2021-11-07 13:16:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57147 states, 57146 states have (on average 1.30924299163546) internal successors, (74818), 57146 states have internal predecessors, (74818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57147 states to 57147 states and 74818 transitions. [2021-11-07 13:16:38,116 INFO L78 Accepts]: Start accepts. Automaton has 57147 states and 74818 transitions. Word has length 108 [2021-11-07 13:16:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:16:38,117 INFO L470 AbstractCegarLoop]: Abstraction has 57147 states and 74818 transitions. [2021-11-07 13:16:38,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 57147 states and 74818 transitions. [2021-11-07 13:16:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 13:16:38,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:38,138 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:16:38,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:16:38,138 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:38,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:38,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1880682150, now seen corresponding path program 1 times [2021-11-07 13:16:38,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:38,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407725539] [2021-11-07 13:16:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:38,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:16:38,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:38,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407725539] [2021-11-07 13:16:38,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407725539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:38,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:16:38,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:16:38,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694077878] [2021-11-07 13:16:38,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:38,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:16:38,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:38,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:16:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:16:38,264 INFO L87 Difference]: Start difference. First operand 57147 states and 74818 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:40,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:43,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:45,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:48,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:50,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:53,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:16:53,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:16:53,722 INFO L93 Difference]: Finished difference Result 164679 states and 215526 transitions. [2021-11-07 13:16:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:16:53,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-11-07 13:16:53,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:16:53,943 INFO L225 Difference]: With dead ends: 164679 [2021-11-07 13:16:53,943 INFO L226 Difference]: Without dead ends: 116972 [2021-11-07 13:16:54,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:16:54,007 INFO L933 BasicCegarLoop]: 5748 mSDtfsCounter, 7929 mSDsluCounter, 6663 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13166.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7929 SdHoareTripleChecker+Valid, 12411 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.47ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13354.38ms IncrementalHoareTripleChecker+Time [2021-11-07 13:16:54,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7929 Valid, 12411 Invalid, 76 Unknown, 0 Unchecked, 13.47ms Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 6 Unknown, 0 Unchecked, 13354.38ms Time] [2021-11-07 13:16:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116972 states. [2021-11-07 13:16:55,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116972 to 70271. [2021-11-07 13:16:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70271 states, 70270 states have (on average 1.3088942649779423) internal successors, (91976), 70270 states have internal predecessors, (91976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70271 states to 70271 states and 91976 transitions. [2021-11-07 13:16:55,961 INFO L78 Accepts]: Start accepts. Automaton has 70271 states and 91976 transitions. Word has length 108 [2021-11-07 13:16:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:16:55,962 INFO L470 AbstractCegarLoop]: Abstraction has 70271 states and 91976 transitions. [2021-11-07 13:16:55,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:55,962 INFO L276 IsEmpty]: Start isEmpty. Operand 70271 states and 91976 transitions. [2021-11-07 13:16:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 13:16:55,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:16:55,981 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:16:55,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 13:16:55,981 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:16:55,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:16:55,982 INFO L85 PathProgramCache]: Analyzing trace with hash -356112904, now seen corresponding path program 1 times [2021-11-07 13:16:55,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:16:55,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329096377] [2021-11-07 13:16:55,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:16:55,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:16:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:16:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:16:56,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:16:56,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329096377] [2021-11-07 13:16:56,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329096377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:16:56,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:16:56,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:16:56,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291562387] [2021-11-07 13:16:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:16:56,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:16:56,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:16:56,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:16:56,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:16:56,288 INFO L87 Difference]: Start difference. First operand 70271 states and 91976 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:16:58,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:00,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:02,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:04,296 INFO L93 Difference]: Finished difference Result 139349 states and 182324 transitions. [2021-11-07 13:17:04,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:17:04,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2021-11-07 13:17:04,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:04,443 INFO L225 Difference]: With dead ends: 139349 [2021-11-07 13:17:04,443 INFO L226 Difference]: Without dead ends: 96050 [2021-11-07 13:17:04,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.26ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:17:04,505 INFO L933 BasicCegarLoop]: 5523 mSDtfsCounter, 5524 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6114.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5524 SdHoareTripleChecker+Valid, 8614 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.67ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6198.76ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:04,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5524 Valid, 8614 Invalid, 46 Unknown, 0 Unchecked, 10.67ms Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 3 Unknown, 0 Unchecked, 6198.76ms Time] [2021-11-07 13:17:04,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96050 states. [2021-11-07 13:17:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96050 to 66791. [2021-11-07 13:17:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66791 states, 66790 states have (on average 1.3082197933822428) internal successors, (87376), 66790 states have internal predecessors, (87376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66791 states to 66791 states and 87376 transitions. [2021-11-07 13:17:06,664 INFO L78 Accepts]: Start accepts. Automaton has 66791 states and 87376 transitions. Word has length 109 [2021-11-07 13:17:06,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:17:06,664 INFO L470 AbstractCegarLoop]: Abstraction has 66791 states and 87376 transitions. [2021-11-07 13:17:06,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:06,665 INFO L276 IsEmpty]: Start isEmpty. Operand 66791 states and 87376 transitions. [2021-11-07 13:17:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 13:17:06,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:17:06,680 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:17:06,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 13:17:06,680 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:17:06,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:17:06,681 INFO L85 PathProgramCache]: Analyzing trace with hash -16531357, now seen corresponding path program 1 times [2021-11-07 13:17:06,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:17:06,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575427806] [2021-11-07 13:17:06,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:06,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:17:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:17:06,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:17:06,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575427806] [2021-11-07 13:17:06,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575427806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:17:06,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:17:06,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:17:06,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530750216] [2021-11-07 13:17:06,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:17:06,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:17:06,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:17:06,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:17:06,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:17:06,792 INFO L87 Difference]: Start difference. First operand 66791 states and 87376 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:08,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:10,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:12,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:12,995 INFO L93 Difference]: Finished difference Result 132349 states and 173084 transitions. [2021-11-07 13:17:12,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:17:12,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2021-11-07 13:17:12,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:13,145 INFO L225 Difference]: With dead ends: 132349 [2021-11-07 13:17:13,146 INFO L226 Difference]: Without dead ends: 92530 [2021-11-07 13:17:13,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.46ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:17:13,198 INFO L933 BasicCegarLoop]: 5290 mSDtfsCounter, 5288 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4081.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.49ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4138.87ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:13,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5288 Valid, 8156 Invalid, 36 Unknown, 0 Unchecked, 9.49ms Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 4138.87ms Time] [2021-11-07 13:17:13,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92530 states. [2021-11-07 13:17:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92530 to 63311. [2021-11-07 13:17:15,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63311 states, 63310 states have (on average 1.3074711735902702) internal successors, (82776), 63310 states have internal predecessors, (82776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63311 states to 63311 states and 82776 transitions. [2021-11-07 13:17:15,167 INFO L78 Accepts]: Start accepts. Automaton has 63311 states and 82776 transitions. Word has length 110 [2021-11-07 13:17:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:17:15,167 INFO L470 AbstractCegarLoop]: Abstraction has 63311 states and 82776 transitions. [2021-11-07 13:17:15,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 63311 states and 82776 transitions. [2021-11-07 13:17:15,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-07 13:17:15,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:17:15,180 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:17:15,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 13:17:15,180 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:17:15,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:17:15,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1422236660, now seen corresponding path program 1 times [2021-11-07 13:17:15,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:17:15,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272756999] [2021-11-07 13:17:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:15,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:17:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:17:15,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:17:15,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272756999] [2021-11-07 13:17:15,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272756999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:17:15,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:17:15,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:17:15,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329806342] [2021-11-07 13:17:15,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:17:15,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:17:15,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:17:15,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:17:15,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:17:15,283 INFO L87 Difference]: Start difference. First operand 63311 states and 82776 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:17,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:19,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:19,729 INFO L93 Difference]: Finished difference Result 125349 states and 163844 transitions. [2021-11-07 13:17:19,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:17:19,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 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 111 [2021-11-07 13:17:19,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:19,863 INFO L225 Difference]: With dead ends: 125349 [2021-11-07 13:17:19,863 INFO L226 Difference]: Without dead ends: 89010 [2021-11-07 13:17:19,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.20ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:17:19,914 INFO L933 BasicCegarLoop]: 5057 mSDtfsCounter, 5052 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2053.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5052 SdHoareTripleChecker+Valid, 7698 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.97ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2091.74ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:19,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5052 Valid, 7698 Invalid, 26 Unknown, 0 Unchecked, 8.97ms Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2091.74ms Time] [2021-11-07 13:17:19,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89010 states. [2021-11-07 13:17:21,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89010 to 59831. [2021-11-07 13:17:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59831 states, 59830 states have (on average 1.3066354671569447) internal successors, (78176), 59830 states have internal predecessors, (78176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59831 states to 59831 states and 78176 transitions. [2021-11-07 13:17:21,807 INFO L78 Accepts]: Start accepts. Automaton has 59831 states and 78176 transitions. Word has length 111 [2021-11-07 13:17:21,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:17:21,807 INFO L470 AbstractCegarLoop]: Abstraction has 59831 states and 78176 transitions. [2021-11-07 13:17:21,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:21,807 INFO L276 IsEmpty]: Start isEmpty. Operand 59831 states and 78176 transitions. [2021-11-07 13:17:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 13:17:21,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:17:21,819 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:17:21,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 13:17:21,819 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:17:21,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:17:21,820 INFO L85 PathProgramCache]: Analyzing trace with hash 509497701, now seen corresponding path program 1 times [2021-11-07 13:17:21,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:17:21,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141384146] [2021-11-07 13:17:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:21,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:17:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 13:17:21,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:17:21,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141384146] [2021-11-07 13:17:21,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141384146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:17:21,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:17:21,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:17:21,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727523235] [2021-11-07 13:17:21,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:17:21,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:17:21,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:17:21,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:17:21,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:17:21,969 INFO L87 Difference]: Start difference. First operand 59831 states and 78176 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:24,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:27,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:29,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:31,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:33,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:36,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:38,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:17:39,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:39,788 INFO L93 Difference]: Finished difference Result 197587 states and 258004 transitions. [2021-11-07 13:17:39,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 13:17:39,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 113 [2021-11-07 13:17:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:40,170 INFO L225 Difference]: With dead ends: 197587 [2021-11-07 13:17:40,171 INFO L226 Difference]: Without dead ends: 145108 [2021-11-07 13:17:40,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 73.41ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 13:17:40,246 INFO L933 BasicCegarLoop]: 5051 mSDtfsCounter, 9194 mSDsluCounter, 10957 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 30 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13582.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9194 SdHoareTripleChecker+Valid, 16008 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.25ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13787.60ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:40,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9194 Valid, 16008 Invalid, 177 Unknown, 0 Unchecked, 18.25ms Time], IncrementalHoareTripleChecker [30 Valid, 142 Invalid, 5 Unknown, 0 Unchecked, 13787.60ms Time] [2021-11-07 13:17:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145108 states. [2021-11-07 13:17:43,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145108 to 90785. [2021-11-07 13:17:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90785 states, 90784 states have (on average 1.304943602396898) internal successors, (118468), 90784 states have internal predecessors, (118468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90785 states to 90785 states and 118468 transitions. [2021-11-07 13:17:43,513 INFO L78 Accepts]: Start accepts. Automaton has 90785 states and 118468 transitions. Word has length 113 [2021-11-07 13:17:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:17:43,514 INFO L470 AbstractCegarLoop]: Abstraction has 90785 states and 118468 transitions. [2021-11-07 13:17:43,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 90785 states and 118468 transitions. [2021-11-07 13:17:43,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 13:17:43,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:17:43,519 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:17:43,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 13:17:43,520 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:17:43,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:17:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash -335133522, now seen corresponding path program 1 times [2021-11-07 13:17:43,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:17:43,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891658678] [2021-11-07 13:17:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:43,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:17:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 13:17:43,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:17:43,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891658678] [2021-11-07 13:17:43,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891658678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:17:43,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:17:43,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:17:43,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366783186] [2021-11-07 13:17:43,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:17:43,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:17:43,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:17:43,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:17:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:17:43,655 INFO L87 Difference]: Start difference. First operand 90785 states and 118468 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:46,572 INFO L93 Difference]: Finished difference Result 133571 states and 174230 transitions. [2021-11-07 13:17:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:17:46,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 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 119 [2021-11-07 13:17:46,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:46,722 INFO L225 Difference]: With dead ends: 133571 [2021-11-07 13:17:46,723 INFO L226 Difference]: Without dead ends: 85224 [2021-11-07 13:17:46,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.12ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:17:46,777 INFO L933 BasicCegarLoop]: 4820 mSDtfsCounter, 7206 mSDsluCounter, 4835 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7206 SdHoareTripleChecker+Valid, 9655 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.31ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.62ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:46,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7206 Valid, 9655 Invalid, 43 Unknown, 0 Unchecked, 10.31ms Time], IncrementalHoareTripleChecker [17 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 58.62ms Time] [2021-11-07 13:17:46,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85224 states. [2021-11-07 13:17:49,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85224 to 42797. [2021-11-07 13:17:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42797 states, 42796 states have (on average 1.3025516403402186) internal successors, (55744), 42796 states have internal predecessors, (55744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42797 states to 42797 states and 55744 transitions. [2021-11-07 13:17:49,127 INFO L78 Accepts]: Start accepts. Automaton has 42797 states and 55744 transitions. Word has length 119 [2021-11-07 13:17:49,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:17:49,128 INFO L470 AbstractCegarLoop]: Abstraction has 42797 states and 55744 transitions. [2021-11-07 13:17:49,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:49,128 INFO L276 IsEmpty]: Start isEmpty. Operand 42797 states and 55744 transitions. [2021-11-07 13:17:49,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-11-07 13:17:49,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:17:49,135 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:17:49,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 13:17:49,136 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:17:49,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:17:49,137 INFO L85 PathProgramCache]: Analyzing trace with hash -322984475, now seen corresponding path program 1 times [2021-11-07 13:17:49,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:17:49,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222531787] [2021-11-07 13:17:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:17:49,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:17:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:17:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:17:49,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:17:49,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222531787] [2021-11-07 13:17:49,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222531787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:17:49,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:17:49,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:17:49,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608211777] [2021-11-07 13:17:49,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:17:49,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:17:49,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:17:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:17:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:17:49,337 INFO L87 Difference]: Start difference. First operand 42797 states and 55744 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:17:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:17:52,509 INFO L93 Difference]: Finished difference Result 117343 states and 153282 transitions. [2021-11-07 13:17:52,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:17:52,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 356 [2021-11-07 13:17:52,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:17:52,623 INFO L225 Difference]: With dead ends: 117343 [2021-11-07 13:17:52,623 INFO L226 Difference]: Without dead ends: 74564 [2021-11-07 13:17:52,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:17:52,678 INFO L933 BasicCegarLoop]: 3374 mSDtfsCounter, 1978 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 5776 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.22ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.45ms IncrementalHoareTripleChecker+Time [2021-11-07 13:17:52,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1978 Valid, 5776 Invalid, 11 Unknown, 0 Unchecked, 5.22ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 53.45ms Time] [2021-11-07 13:17:52,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74564 states.