./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.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 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 15:39:42,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 15:39:42,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 15:39:42,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 15:39:42,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 15:39:42,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 15:39:42,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 15:39:42,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 15:39:42,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 15:39:42,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 15:39:42,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 15:39:42,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 15:39:42,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 15:39:42,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 15:39:42,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 15:39:42,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 15:39:42,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 15:39:42,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 15:39:42,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 15:39:42,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 15:39:42,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 15:39:42,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 15:39:42,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 15:39:42,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 15:39:42,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 15:39:42,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 15:39:42,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 15:39:42,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 15:39:42,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 15:39:42,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 15:39:42,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 15:39:42,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 15:39:42,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 15:39:42,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 15:39:42,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 15:39:42,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 15:39:42,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 15:39:42,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 15:39:42,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 15:39:42,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 15:39:42,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 15:39:42,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 15:39:42,366 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 15:39:42,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 15:39:42,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 15:39:42,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 15:39:42,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 15:39:42,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 15:39:42,370 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 15:39:42,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 15:39:42,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 15:39:42,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 15:39:42,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 15:39:42,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 15:39:42,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 15:39:42,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 15:39:42,373 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 15:39:42,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 15:39:42,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 15:39:42,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 15:39:42,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 15:39:42,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 15:39:42,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 15:39:42,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 15:39:42,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 15:39:42,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 15:39:42,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 15:39:42,375 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 15:39:42,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 15:39:42,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 15:39:42,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 15:39:42,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2021-11-05 15:39:42,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 15:39:42,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 15:39:42,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 15:39:42,724 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 15:39:42,725 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 15:39:42,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-11-05 15:39:42,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23b515bcc/4782815e82e24e0d97e42d999aaeaeba/FLAG00d09c0fa [2021-11-05 15:39:43,330 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 15:39:43,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-11-05 15:39:43,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23b515bcc/4782815e82e24e0d97e42d999aaeaeba/FLAG00d09c0fa [2021-11-05 15:39:43,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23b515bcc/4782815e82e24e0d97e42d999aaeaeba [2021-11-05 15:39:43,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 15:39:43,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 15:39:43,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 15:39:43,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 15:39:43,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 15:39:43,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 03:39:43" (1/1) ... [2021-11-05 15:39:43,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ed06b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:43, skipping insertion in model container [2021-11-05 15:39:43,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 03:39:43" (1/1) ... [2021-11-05 15:39:43,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 15:39:43,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 15:39:44,348 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2021-11-05 15:39:44,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 15:39:44,462 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 15:39:44,667 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2021-11-05 15:39:44,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 15:39:44,843 INFO L208 MainTranslator]: Completed translation [2021-11-05 15:39:44,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:44 WrapperNode [2021-11-05 15:39:44,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 15:39:44,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 15:39:44,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 15:39:44,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 15:39:44,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:44" (1/1) ... [2021-11-05 15:39:44,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:44" (1/1) ... [2021-11-05 15:39:45,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 15:39:45,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 15:39:45,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 15:39:45,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 15:39:45,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:44" (1/1) ... [2021-11-05 15:39:45,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:44" (1/1) ... [2021-11-05 15:39:45,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:44" (1/1) ... [2021-11-05 15:39:45,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:44" (1/1) ... [2021-11-05 15:39:45,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:44" (1/1) ... [2021-11-05 15:39:45,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:44" (1/1) ... [2021-11-05 15:39:45,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:44" (1/1) ... [2021-11-05 15:39:45,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 15:39:45,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 15:39:45,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 15:39:45,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 15:39:45,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:44" (1/1) ... [2021-11-05 15:39:45,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 15:39:45,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:39:46,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 15:39:46,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 15:39:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 15:39:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 15:39:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 15:39:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 15:39:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 15:39:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 15:39:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 15:39:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 15:39:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-05 15:39:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 15:39:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 15:39:46,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 15:40:33,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 15:40:33,406 INFO L299 CfgBuilder]: Removed 1211 assume(true) statements. [2021-11-05 15:40:33,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 03:40:33 BoogieIcfgContainer [2021-11-05 15:40:33,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 15:40:33,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 15:40:33,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 15:40:33,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 15:40:33,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 03:39:43" (1/3) ... [2021-11-05 15:40:33,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be52167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 03:40:33, skipping insertion in model container [2021-11-05 15:40:33,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:39:44" (2/3) ... [2021-11-05 15:40:33,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be52167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 03:40:33, skipping insertion in model container [2021-11-05 15:40:33,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 03:40:33" (3/3) ... [2021-11-05 15:40:33,416 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-11-05 15:40:33,421 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 15:40:33,421 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-05 15:40:33,466 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 15:40:33,472 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 15:40:33,472 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-05 15:40:33,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 1381 states, 1369 states have (on average 1.3783783783783783) internal successors, (1887), 1380 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-05 15:40:33,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:40:33,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:40:33,511 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:40:33,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:40:33,515 INFO L85 PathProgramCache]: Analyzing trace with hash 12375506, now seen corresponding path program 1 times [2021-11-05 15:40:33,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:40:33,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306426960] [2021-11-05 15:40:33,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:40:33,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:40:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:40:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:40:34,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:40:34,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306426960] [2021-11-05 15:40:34,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306426960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:40:34,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:40:34,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:40:34,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089469152] [2021-11-05 15:40:34,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:40:34,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:40:34,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:40:34,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:40:34,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:34,855 INFO L87 Difference]: Start difference. First operand has 1381 states, 1369 states have (on average 1.3783783783783783) internal successors, (1887), 1380 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:37,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:40:37,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:40:37,507 INFO L93 Difference]: Finished difference Result 4047 states and 5536 transitions. [2021-11-05 15:40:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:40:37,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-05 15:40:37,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:40:37,535 INFO L225 Difference]: With dead ends: 4047 [2021-11-05 15:40:37,535 INFO L226 Difference]: Without dead ends: 2665 [2021-11-05 15:40:37,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:37,551 INFO L933 BasicCegarLoop]: 1861 mSDtfsCounter, 1834 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2362.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.97ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2462.54ms IncrementalHoareTripleChecker+Time [2021-11-05 15:40:37,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1834 Valid, 3615 Invalid, 16 Unknown, 0 Unchecked, 26.97ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2462.54ms Time] [2021-11-05 15:40:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-11-05 15:40:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2649. [2021-11-05 15:40:37,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2638 states have (on average 1.362016679302502) internal successors, (3593), 2648 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3593 transitions. [2021-11-05 15:40:37,683 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3593 transitions. Word has length 14 [2021-11-05 15:40:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:40:37,683 INFO L470 AbstractCegarLoop]: Abstraction has 2649 states and 3593 transitions. [2021-11-05 15:40:37,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:37,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3593 transitions. [2021-11-05 15:40:37,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-05 15:40:37,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:40:37,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:40:37,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 15:40:37,687 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:40:37,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:40:37,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1358126481, now seen corresponding path program 1 times [2021-11-05 15:40:37,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:40:37,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531296982] [2021-11-05 15:40:37,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:40:37,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:40:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:40:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:40:38,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:40:38,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531296982] [2021-11-05 15:40:38,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531296982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:40:38,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:40:38,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:40:38,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895822968] [2021-11-05 15:40:38,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:40:38,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:40:38,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:40:38,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:40:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:38,447 INFO L87 Difference]: Start difference. First operand 2649 states and 3593 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:38,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:40:38,984 INFO L93 Difference]: Finished difference Result 7634 states and 10327 transitions. [2021-11-05 15:40:38,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:40:38,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-05 15:40:38,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:40:39,004 INFO L225 Difference]: With dead ends: 7634 [2021-11-05 15:40:39,004 INFO L226 Difference]: Without dead ends: 4988 [2021-11-05 15:40:39,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:39,011 INFO L933 BasicCegarLoop]: 1873 mSDtfsCounter, 1625 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 344.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.11ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 424.70ms IncrementalHoareTripleChecker+Time [2021-11-05 15:40:39,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 3665 Invalid, 65 Unknown, 0 Unchecked, 7.11ms Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 424.70ms Time] [2021-11-05 15:40:39,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-11-05 15:40:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4972. [2021-11-05 15:40:39,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4972 states, 4961 states have (on average 1.3549687562991333) internal successors, (6722), 4971 states have internal predecessors, (6722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4972 states to 4972 states and 6722 transitions. [2021-11-05 15:40:39,228 INFO L78 Accepts]: Start accepts. Automaton has 4972 states and 6722 transitions. Word has length 15 [2021-11-05 15:40:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:40:39,229 INFO L470 AbstractCegarLoop]: Abstraction has 4972 states and 6722 transitions. [2021-11-05 15:40:39,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4972 states and 6722 transitions. [2021-11-05 15:40:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-05 15:40:39,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:40:39,235 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] [2021-11-05 15:40:39,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 15:40:39,237 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:40:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:40:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1461430461, now seen corresponding path program 1 times [2021-11-05 15:40:39,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:40:39,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788285206] [2021-11-05 15:40:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:40:39,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:40:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:40:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:40:39,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:40:39,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788285206] [2021-11-05 15:40:39,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788285206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:40:39,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:40:39,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 15:40:39,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973797098] [2021-11-05 15:40:39,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:40:39,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 15:40:39,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:40:39,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 15:40:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 15:40:39,984 INFO L87 Difference]: Start difference. First operand 4972 states and 6722 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:40:41,149 INFO L93 Difference]: Finished difference Result 24702 states and 33402 transitions. [2021-11-05 15:40:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 15:40:41,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2021-11-05 15:40:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:40:41,248 INFO L225 Difference]: With dead ends: 24702 [2021-11-05 15:40:41,248 INFO L226 Difference]: Without dead ends: 19733 [2021-11-05 15:40:41,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 48.38ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-05 15:40:41,269 INFO L933 BasicCegarLoop]: 3638 mSDtfsCounter, 10948 mSDsluCounter, 14585 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 617.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10948 SdHoareTripleChecker+Valid, 18223 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.71ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 657.61ms IncrementalHoareTripleChecker+Time [2021-11-05 15:40:41,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10948 Valid, 18223 Invalid, 79 Unknown, 0 Unchecked, 33.71ms Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 657.61ms Time] [2021-11-05 15:40:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19733 states. [2021-11-05 15:40:41,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19733 to 5014. [2021-11-05 15:40:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5003 states have (on average 1.3539876074355386) internal successors, (6774), 5013 states have internal predecessors, (6774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 6774 transitions. [2021-11-05 15:40:41,595 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 6774 transitions. Word has length 23 [2021-11-05 15:40:41,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:40:41,596 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 6774 transitions. [2021-11-05 15:40:41,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:41,596 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 6774 transitions. [2021-11-05 15:40:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-05 15:40:41,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:40:41,597 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] [2021-11-05 15:40:41,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 15:40:41,598 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:40:41,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:40:41,598 INFO L85 PathProgramCache]: Analyzing trace with hash 874624447, now seen corresponding path program 1 times [2021-11-05 15:40:41,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:40:41,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499714673] [2021-11-05 15:40:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:40:41,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:40:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:40:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:40:42,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:40:42,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499714673] [2021-11-05 15:40:42,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499714673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:40:42,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:40:42,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:40:42,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788454118] [2021-11-05 15:40:42,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:40:42,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:40:42,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:40:42,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:40:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:42,269 INFO L87 Difference]: Start difference. First operand 5014 states and 6774 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:40:42,683 INFO L93 Difference]: Finished difference Result 5032 states and 6790 transitions. [2021-11-05 15:40:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:40:42,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-05 15:40:42,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:40:42,694 INFO L225 Difference]: With dead ends: 5032 [2021-11-05 15:40:42,695 INFO L226 Difference]: Without dead ends: 5023 [2021-11-05 15:40:42,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:42,703 INFO L933 BasicCegarLoop]: 1865 mSDtfsCounter, 1853 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 263.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 303.34ms IncrementalHoareTripleChecker+Time [2021-11-05 15:40:42,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 1873 Invalid, 6 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 303.34ms Time] [2021-11-05 15:40:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2021-11-05 15:40:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 5014. [2021-11-05 15:40:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5003 states have (on average 1.3537877273635819) internal successors, (6773), 5013 states have internal predecessors, (6773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:42,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 6773 transitions. [2021-11-05 15:40:42,871 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 6773 transitions. Word has length 23 [2021-11-05 15:40:42,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:40:42,872 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 6773 transitions. [2021-11-05 15:40:42,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:42,872 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 6773 transitions. [2021-11-05 15:40:42,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-05 15:40:42,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:40:42,873 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] [2021-11-05 15:40:42,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 15:40:42,874 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:40:42,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:40:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash 874684029, now seen corresponding path program 1 times [2021-11-05 15:40:42,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:40:42,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820580017] [2021-11-05 15:40:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:40:42,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:40:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:40:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:40:43,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:40:43,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820580017] [2021-11-05 15:40:43,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820580017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:40:43,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:40:43,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:40:43,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782239156] [2021-11-05 15:40:43,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:40:43,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:40:43,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:40:43,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:40:43,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:43,546 INFO L87 Difference]: Start difference. First operand 5014 states and 6773 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:45,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:40:46,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:40:46,083 INFO L93 Difference]: Finished difference Result 5014 states and 6773 transitions. [2021-11-05 15:40:46,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:40:46,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-05 15:40:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:40:46,093 INFO L225 Difference]: With dead ends: 5014 [2021-11-05 15:40:46,093 INFO L226 Difference]: Without dead ends: 5012 [2021-11-05 15:40:46,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:46,097 INFO L933 BasicCegarLoop]: 1855 mSDtfsCounter, 1835 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2272.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2358.25ms IncrementalHoareTripleChecker+Time [2021-11-05 15:40:46,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1835 Valid, 1855 Invalid, 2 Unknown, 0 Unchecked, 3.58ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2358.25ms Time] [2021-11-05 15:40:46,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2021-11-05 15:40:46,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 5012. [2021-11-05 15:40:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5012 states, 5002 states have (on average 1.353658536585366) internal successors, (6771), 5011 states have internal predecessors, (6771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 6771 transitions. [2021-11-05 15:40:46,259 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 6771 transitions. Word has length 23 [2021-11-05 15:40:46,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:40:46,263 INFO L470 AbstractCegarLoop]: Abstraction has 5012 states and 6771 transitions. [2021-11-05 15:40:46,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 6771 transitions. [2021-11-05 15:40:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-05 15:40:46,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:40:46,264 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] [2021-11-05 15:40:46,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 15:40:46,265 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:40:46,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:40:46,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1345403867, now seen corresponding path program 1 times [2021-11-05 15:40:46,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:40:46,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934551593] [2021-11-05 15:40:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:40:46,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:40:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:40:46,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:40:46,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:40:46,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934551593] [2021-11-05 15:40:46,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934551593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:40:46,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:40:46,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:40:46,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123570611] [2021-11-05 15:40:46,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:40:46,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:40:46,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:40:46,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:40:46,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:46,947 INFO L87 Difference]: Start difference. First operand 5012 states and 6771 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:49,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:40:49,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:40:49,417 INFO L93 Difference]: Finished difference Result 5012 states and 6771 transitions. [2021-11-05 15:40:49,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:40:49,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-05 15:40:49,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:40:49,427 INFO L225 Difference]: With dead ends: 5012 [2021-11-05 15:40:49,428 INFO L226 Difference]: Without dead ends: 5010 [2021-11-05 15:40:49,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:49,430 INFO L933 BasicCegarLoop]: 1853 mSDtfsCounter, 1832 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2248.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2339.55ms IncrementalHoareTripleChecker+Time [2021-11-05 15:40:49,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1832 Valid, 1853 Invalid, 2 Unknown, 0 Unchecked, 3.75ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2339.55ms Time] [2021-11-05 15:40:49,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5010 states. [2021-11-05 15:40:49,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5010 to 5010. [2021-11-05 15:40:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5010 states, 5001 states have (on average 1.3535292941411718) internal successors, (6769), 5009 states have internal predecessors, (6769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 6769 transitions. [2021-11-05 15:40:49,609 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 6769 transitions. Word has length 24 [2021-11-05 15:40:49,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:40:49,610 INFO L470 AbstractCegarLoop]: Abstraction has 5010 states and 6769 transitions. [2021-11-05 15:40:49,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:49,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 6769 transitions. [2021-11-05 15:40:49,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-05 15:40:49,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:40:49,612 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] [2021-11-05 15:40:49,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 15:40:49,612 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:40:49,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:40:49,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1242150329, now seen corresponding path program 1 times [2021-11-05 15:40:49,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:40:49,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844455308] [2021-11-05 15:40:49,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:40:49,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:40:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:40:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:40:50,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:40:50,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844455308] [2021-11-05 15:40:50,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844455308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:40:50,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:40:50,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:40:50,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657479650] [2021-11-05 15:40:50,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:40:50,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:40:50,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:40:50,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:40:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:50,269 INFO L87 Difference]: Start difference. First operand 5010 states and 6769 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2021-11-05 15:40:52,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:40:52,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:40:52,885 INFO L93 Difference]: Finished difference Result 11424 states and 15459 transitions. [2021-11-05 15:40:52,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:40:52,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 [2021-11-05 15:40:52,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:40:52,901 INFO L225 Difference]: With dead ends: 11424 [2021-11-05 15:40:52,902 INFO L226 Difference]: Without dead ends: 6411 [2021-11-05 15:40:52,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:52,913 INFO L933 BasicCegarLoop]: 1847 mSDtfsCounter, 660 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2292.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 3603 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.05ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2391.17ms IncrementalHoareTripleChecker+Time [2021-11-05 15:40:52,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 3603 Invalid, 40 Unknown, 0 Unchecked, 6.05ms Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2391.17ms Time] [2021-11-05 15:40:52,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2021-11-05 15:40:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 6381. [2021-11-05 15:40:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6372 states have (on average 1.3554613935969868) internal successors, (8637), 6380 states have internal predecessors, (8637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 8637 transitions. [2021-11-05 15:40:53,131 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 8637 transitions. Word has length 25 [2021-11-05 15:40:53,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:40:53,133 INFO L470 AbstractCegarLoop]: Abstraction has 6381 states and 8637 transitions. [2021-11-05 15:40:53,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2021-11-05 15:40:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 8637 transitions. [2021-11-05 15:40:53,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-05 15:40:53,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:40:53,137 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] [2021-11-05 15:40:53,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 15:40:53,137 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:40:53,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:40:53,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1456826833, now seen corresponding path program 1 times [2021-11-05 15:40:53,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:40:53,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240577545] [2021-11-05 15:40:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:40:53,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:40:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:40:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:40:53,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:40:53,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240577545] [2021-11-05 15:40:53,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240577545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:40:53,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:40:53,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:40:53,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008520492] [2021-11-05 15:40:53,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:40:53,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:40:53,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:40:53,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:40:53,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:53,777 INFO L87 Difference]: Start difference. First operand 6381 states and 8637 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:56,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:40:56,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:40:56,607 INFO L93 Difference]: Finished difference Result 15863 states and 21540 transitions. [2021-11-05 15:40:56,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:40:56,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-11-05 15:40:56,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:40:56,627 INFO L225 Difference]: With dead ends: 15863 [2021-11-05 15:40:56,627 INFO L226 Difference]: Without dead ends: 9485 [2021-11-05 15:40:56,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:56,642 INFO L933 BasicCegarLoop]: 3454 mSDtfsCounter, 1682 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2387.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 5241 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.72ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2496.31ms IncrementalHoareTripleChecker+Time [2021-11-05 15:40:56,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1682 Valid, 5241 Invalid, 105 Unknown, 0 Unchecked, 6.72ms Time], IncrementalHoareTripleChecker [22 Valid, 82 Invalid, 1 Unknown, 0 Unchecked, 2496.31ms Time] [2021-11-05 15:40:56,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9485 states. [2021-11-05 15:40:56,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9485 to 9473. [2021-11-05 15:40:56,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9473 states, 9464 states have (on average 1.3538672865595942) internal successors, (12813), 9472 states have internal predecessors, (12813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9473 states to 9473 states and 12813 transitions. [2021-11-05 15:40:56,925 INFO L78 Accepts]: Start accepts. Automaton has 9473 states and 12813 transitions. Word has length 33 [2021-11-05 15:40:56,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:40:56,925 INFO L470 AbstractCegarLoop]: Abstraction has 9473 states and 12813 transitions. [2021-11-05 15:40:56,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:56,927 INFO L276 IsEmpty]: Start isEmpty. Operand 9473 states and 12813 transitions. [2021-11-05 15:40:56,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 15:40:56,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:40:56,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:40:56,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 15:40:56,929 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:40:56,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:40:56,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2053211790, now seen corresponding path program 1 times [2021-11-05 15:40:56,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:40:56,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987445332] [2021-11-05 15:40:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:40:56,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:40:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:40:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:40:57,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:40:57,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987445332] [2021-11-05 15:40:57,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987445332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:40:57,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:40:57,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:40:57,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468147356] [2021-11-05 15:40:57,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:40:57,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:40:57,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:40:57,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:40:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:57,449 INFO L87 Difference]: Start difference. First operand 9473 states and 12813 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:40:58,036 INFO L93 Difference]: Finished difference Result 20290 states and 27570 transitions. [2021-11-05 15:40:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:40:58,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-05 15:40:58,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:40:58,061 INFO L225 Difference]: With dead ends: 20290 [2021-11-05 15:40:58,061 INFO L226 Difference]: Without dead ends: 10820 [2021-11-05 15:40:58,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:58,083 INFO L933 BasicCegarLoop]: 1854 mSDtfsCounter, 333 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 276.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 3693 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.91ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 325.90ms IncrementalHoareTripleChecker+Time [2021-11-05 15:40:58,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 3693 Invalid, 14 Unknown, 0 Unchecked, 3.91ms Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 325.90ms Time] [2021-11-05 15:40:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10820 states. [2021-11-05 15:40:58,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10820 to 10765. [2021-11-05 15:40:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10765 states, 10756 states have (on average 1.3664001487541837) internal successors, (14697), 10764 states have internal predecessors, (14697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:58,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 14697 transitions. [2021-11-05 15:40:58,459 INFO L78 Accepts]: Start accepts. Automaton has 10765 states and 14697 transitions. Word has length 45 [2021-11-05 15:40:58,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:40:58,459 INFO L470 AbstractCegarLoop]: Abstraction has 10765 states and 14697 transitions. [2021-11-05 15:40:58,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:40:58,460 INFO L276 IsEmpty]: Start isEmpty. Operand 10765 states and 14697 transitions. [2021-11-05 15:40:58,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-05 15:40:58,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:40:58,463 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:40:58,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 15:40:58,463 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:40:58,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:40:58,464 INFO L85 PathProgramCache]: Analyzing trace with hash -234060580, now seen corresponding path program 1 times [2021-11-05 15:40:58,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:40:58,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942302148] [2021-11-05 15:40:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:40:58,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:40:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:40:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 15:40:59,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:40:59,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942302148] [2021-11-05 15:40:59,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942302148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:40:59,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:40:59,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:40:59,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476146633] [2021-11-05 15:40:59,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:40:59,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:40:59,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:40:59,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:40:59,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:40:59,050 INFO L87 Difference]: Start difference. First operand 10765 states and 14697 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:01,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:41:01,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:41:01,881 INFO L93 Difference]: Finished difference Result 25013 states and 34292 transitions. [2021-11-05 15:41:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:41:01,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-05 15:41:01,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:41:01,919 INFO L225 Difference]: With dead ends: 25013 [2021-11-05 15:41:01,920 INFO L226 Difference]: Without dead ends: 14251 [2021-11-05 15:41:01,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:41:01,946 INFO L933 BasicCegarLoop]: 3517 mSDtfsCounter, 1729 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2370.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 5258 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.73ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2479.40ms IncrementalHoareTripleChecker+Time [2021-11-05 15:41:01,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 5258 Invalid, 106 Unknown, 0 Unchecked, 4.73ms Time], IncrementalHoareTripleChecker [23 Valid, 82 Invalid, 1 Unknown, 0 Unchecked, 2479.40ms Time] [2021-11-05 15:41:01,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14251 states. [2021-11-05 15:41:02,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14251 to 14239. [2021-11-05 15:41:02,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14239 states, 14230 states have (on average 1.3647926914968376) internal successors, (19421), 14238 states have internal predecessors, (19421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14239 states to 14239 states and 19421 transitions. [2021-11-05 15:41:02,463 INFO L78 Accepts]: Start accepts. Automaton has 14239 states and 19421 transitions. Word has length 54 [2021-11-05 15:41:02,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:41:02,463 INFO L470 AbstractCegarLoop]: Abstraction has 14239 states and 19421 transitions. [2021-11-05 15:41:02,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:02,464 INFO L276 IsEmpty]: Start isEmpty. Operand 14239 states and 19421 transitions. [2021-11-05 15:41:02,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 15:41:02,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:41:02,467 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:41:02,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 15:41:02,468 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:41:02,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:41:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1153792279, now seen corresponding path program 1 times [2021-11-05 15:41:02,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:41:02,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865091011] [2021-11-05 15:41:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:41:02,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:41:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:41:03,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 15:41:03,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:41:03,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865091011] [2021-11-05 15:41:03,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865091011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:41:03,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:41:03,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:41:03,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054872618] [2021-11-05 15:41:03,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:41:03,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:41:03,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:41:03,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:41:03,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:41:03,098 INFO L87 Difference]: Start difference. First operand 14239 states and 19421 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:03,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:41:03,372 INFO L93 Difference]: Finished difference Result 28483 states and 38855 transitions. [2021-11-05 15:41:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:41:03,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 69 [2021-11-05 15:41:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:41:03,405 INFO L225 Difference]: With dead ends: 28483 [2021-11-05 15:41:03,406 INFO L226 Difference]: Without dead ends: 14247 [2021-11-05 15:41:03,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:41:03,430 INFO L933 BasicCegarLoop]: 1853 mSDtfsCounter, 0 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3701 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.71ms IncrementalHoareTripleChecker+Time [2021-11-05 15:41:03,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3701 Invalid, 6 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 8.71ms Time] [2021-11-05 15:41:03,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14247 states. [2021-11-05 15:41:03,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14247 to 14247. [2021-11-05 15:41:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14247 states, 14238 states have (on average 1.3645877229948027) internal successors, (19429), 14246 states have internal predecessors, (19429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14247 states to 14247 states and 19429 transitions. [2021-11-05 15:41:03,993 INFO L78 Accepts]: Start accepts. Automaton has 14247 states and 19429 transitions. Word has length 69 [2021-11-05 15:41:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:41:03,993 INFO L470 AbstractCegarLoop]: Abstraction has 14247 states and 19429 transitions. [2021-11-05 15:41:03,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:03,994 INFO L276 IsEmpty]: Start isEmpty. Operand 14247 states and 19429 transitions. [2021-11-05 15:41:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 15:41:03,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:41:03,997 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:41:03,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 15:41:03,997 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:41:03,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:41:03,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1155639321, now seen corresponding path program 1 times [2021-11-05 15:41:03,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:41:03,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881909377] [2021-11-05 15:41:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:41:03,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:41:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:41:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 15:41:04,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:41:04,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881909377] [2021-11-05 15:41:04,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881909377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:41:04,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:41:04,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:41:04,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103070462] [2021-11-05 15:41:04,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:41:04,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:41:04,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:41:04,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:41:04,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:41:04,642 INFO L87 Difference]: Start difference. First operand 14247 states and 19429 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:06,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:41:07,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:41:07,301 INFO L93 Difference]: Finished difference Result 28489 states and 38854 transitions. [2021-11-05 15:41:07,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:41:07,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 69 [2021-11-05 15:41:07,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:41:07,331 INFO L225 Difference]: With dead ends: 28489 [2021-11-05 15:41:07,331 INFO L226 Difference]: Without dead ends: 14245 [2021-11-05 15:41:07,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:41:07,355 INFO L933 BasicCegarLoop]: 2359 mSDtfsCounter, 1756 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2300.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.42ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2393.69ms IncrementalHoareTripleChecker+Time [2021-11-05 15:41:07,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1756 Valid, 3026 Invalid, 32 Unknown, 0 Unchecked, 2.42ms Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2393.69ms Time] [2021-11-05 15:41:07,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14245 states. [2021-11-05 15:41:07,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14245 to 14108. [2021-11-05 15:41:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14108 states, 14100 states have (on average 1.3641843971631207) internal successors, (19235), 14107 states have internal predecessors, (19235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:07,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14108 states to 14108 states and 19235 transitions. [2021-11-05 15:41:07,903 INFO L78 Accepts]: Start accepts. Automaton has 14108 states and 19235 transitions. Word has length 69 [2021-11-05 15:41:07,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:41:07,903 INFO L470 AbstractCegarLoop]: Abstraction has 14108 states and 19235 transitions. [2021-11-05 15:41:07,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 14108 states and 19235 transitions. [2021-11-05 15:41:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 15:41:07,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:41:07,919 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:41:07,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 15:41:07,920 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:41:07,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:41:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1383268386, now seen corresponding path program 1 times [2021-11-05 15:41:07,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:41:07,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309632112] [2021-11-05 15:41:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:41:07,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:41:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:41:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 15:41:08,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:41:08,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309632112] [2021-11-05 15:41:08,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309632112] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:41:08,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460345236] [2021-11-05 15:41:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:41:08,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:41:08,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:41:08,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 15:41:08,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 15:41:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:41:11,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 12893 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 15:41:11,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:41:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 15:41:11,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 15:41:11,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460345236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:41:11,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 15:41:11,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2021-11-05 15:41:11,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264838133] [2021-11-05 15:41:11,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:41:11,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 15:41:11,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:41:11,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 15:41:11,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-05 15:41:11,821 INFO L87 Difference]: Start difference. First operand 14108 states and 19235 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:14,071 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:41:15,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:41:15,553 INFO L93 Difference]: Finished difference Result 41811 states and 57055 transitions. [2021-11-05 15:41:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 15:41:15,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 73 [2021-11-05 15:41:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:41:15,601 INFO L225 Difference]: With dead ends: 41811 [2021-11-05 15:41:15,602 INFO L226 Difference]: Without dead ends: 27666 [2021-11-05 15:41:15,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.56ms TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-05 15:41:15,623 INFO L933 BasicCegarLoop]: 3690 mSDtfsCounter, 3728 mSDsluCounter, 18397 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2765.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3728 SdHoareTripleChecker+Valid, 22087 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.20ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2883.93ms IncrementalHoareTripleChecker+Time [2021-11-05 15:41:15,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3728 Valid, 22087 Invalid, 113 Unknown, 0 Unchecked, 19.20ms Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 1 Unknown, 0 Unchecked, 2883.93ms Time] [2021-11-05 15:41:15,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27666 states. [2021-11-05 15:41:16,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27666 to 14113. [2021-11-05 15:41:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14113 states, 14105 states have (on average 1.362353775257001) internal successors, (19216), 14112 states have internal predecessors, (19216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14113 states to 14113 states and 19216 transitions. [2021-11-05 15:41:16,119 INFO L78 Accepts]: Start accepts. Automaton has 14113 states and 19216 transitions. Word has length 73 [2021-11-05 15:41:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:41:16,119 INFO L470 AbstractCegarLoop]: Abstraction has 14113 states and 19216 transitions. [2021-11-05 15:41:16,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 14113 states and 19216 transitions. [2021-11-05 15:41:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 15:41:16,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:41:16,129 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:41:16,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 15:41:16,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-05 15:41:16,349 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:41:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:41:16,350 INFO L85 PathProgramCache]: Analyzing trace with hash -860246004, now seen corresponding path program 1 times [2021-11-05 15:41:16,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:41:16,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417511928] [2021-11-05 15:41:16,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:41:16,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:41:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:41:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 15:41:16,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:41:16,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417511928] [2021-11-05 15:41:16,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417511928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:41:16,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:41:16,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 15:41:16,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651429185] [2021-11-05 15:41:16,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:41:16,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 15:41:16,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:41:16,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 15:41:16,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 15:41:16,888 INFO L87 Difference]: Start difference. First operand 14113 states and 19216 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:18,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:41:18,550 INFO L93 Difference]: Finished difference Result 67691 states and 92366 transitions. [2021-11-05 15:41:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 15:41:18,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 85 [2021-11-05 15:41:18,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:41:18,659 INFO L225 Difference]: With dead ends: 67691 [2021-11-05 15:41:18,660 INFO L226 Difference]: Without dead ends: 53581 [2021-11-05 15:41:18,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.38ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:41:18,826 INFO L933 BasicCegarLoop]: 3920 mSDtfsCounter, 5365 mSDsluCounter, 5736 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 219.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5365 SdHoareTripleChecker+Valid, 9656 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.33ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 238.18ms IncrementalHoareTripleChecker+Time [2021-11-05 15:41:18,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5365 Valid, 9656 Invalid, 37 Unknown, 0 Unchecked, 11.33ms Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 238.18ms Time] [2021-11-05 15:41:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53581 states. [2021-11-05 15:41:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53581 to 14129. [2021-11-05 15:41:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14129 states, 14121 states have (on average 1.3619432051554423) internal successors, (19232), 14128 states have internal predecessors, (19232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14129 states to 14129 states and 19232 transitions. [2021-11-05 15:41:19,435 INFO L78 Accepts]: Start accepts. Automaton has 14129 states and 19232 transitions. Word has length 85 [2021-11-05 15:41:19,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:41:19,435 INFO L470 AbstractCegarLoop]: Abstraction has 14129 states and 19232 transitions. [2021-11-05 15:41:19,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 14129 states and 19232 transitions. [2021-11-05 15:41:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 15:41:19,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:41:19,439 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:41:19,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 15:41:19,439 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:41:19,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:41:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1508724510, now seen corresponding path program 1 times [2021-11-05 15:41:19,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:41:19,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771871334] [2021-11-05 15:41:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:41:19,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:41:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:41:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 15:41:19,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:41:19,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771871334] [2021-11-05 15:41:19,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771871334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:41:19,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:41:19,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:41:19,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207031060] [2021-11-05 15:41:19,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:41:19,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:41:19,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:41:19,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:41:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:41:19,936 INFO L87 Difference]: Start difference. First operand 14129 states and 19232 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:22,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:41:23,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:41:23,435 INFO L93 Difference]: Finished difference Result 41768 states and 56925 transitions. [2021-11-05 15:41:23,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:41:23,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 87 [2021-11-05 15:41:23,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:41:23,482 INFO L225 Difference]: With dead ends: 41768 [2021-11-05 15:41:23,482 INFO L226 Difference]: Without dead ends: 27642 [2021-11-05 15:41:23,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:41:23,507 INFO L933 BasicCegarLoop]: 1874 mSDtfsCounter, 1827 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2266.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.25ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2366.31ms IncrementalHoareTripleChecker+Time [2021-11-05 15:41:23,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1827 Valid, 3721 Invalid, 7 Unknown, 0 Unchecked, 4.25ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2366.31ms Time] [2021-11-05 15:41:23,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27642 states. [2021-11-05 15:41:24,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27642 to 27433. [2021-11-05 15:41:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27433 states, 27425 states have (on average 1.3648860528714677) internal successors, (37432), 27432 states have internal predecessors, (37432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:24,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27433 states to 27433 states and 37432 transitions. [2021-11-05 15:41:24,506 INFO L78 Accepts]: Start accepts. Automaton has 27433 states and 37432 transitions. Word has length 87 [2021-11-05 15:41:24,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:41:24,507 INFO L470 AbstractCegarLoop]: Abstraction has 27433 states and 37432 transitions. [2021-11-05 15:41:24,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:24,507 INFO L276 IsEmpty]: Start isEmpty. Operand 27433 states and 37432 transitions. [2021-11-05 15:41:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 15:41:24,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:41:24,512 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:41:24,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 15:41:24,513 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:41:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:41:24,513 INFO L85 PathProgramCache]: Analyzing trace with hash 962307733, now seen corresponding path program 1 times [2021-11-05 15:41:24,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:41:24,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337504287] [2021-11-05 15:41:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:41:24,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:41:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:41:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 15:41:25,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:41:25,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337504287] [2021-11-05 15:41:25,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337504287] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:41:25,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852074927] [2021-11-05 15:41:25,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:41:25,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:41:25,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:41:25,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 15:41:25,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 15:41:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:41:28,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 12994 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 15:41:28,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:41:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 15:41:28,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 15:41:28,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852074927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:41:28,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 15:41:28,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-05 15:41:28,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534921065] [2021-11-05 15:41:28,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:41:28,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 15:41:28,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:41:28,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 15:41:28,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:41:28,266 INFO L87 Difference]: Start difference. First operand 27433 states and 37432 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:30,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:41:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:41:33,378 INFO L93 Difference]: Finished difference Result 82295 states and 112291 transitions. [2021-11-05 15:41:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 15:41:33,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 90 [2021-11-05 15:41:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:41:33,530 INFO L225 Difference]: With dead ends: 82295 [2021-11-05 15:41:33,530 INFO L226 Difference]: Without dead ends: 82287 [2021-11-05 15:41:33,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:41:33,555 INFO L933 BasicCegarLoop]: 3522 mSDtfsCounter, 3777 mSDsluCounter, 3684 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2214.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3777 SdHoareTripleChecker+Valid, 7206 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.26ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2437.55ms IncrementalHoareTripleChecker+Time [2021-11-05 15:41:33,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3777 Valid, 7206 Invalid, 30 Unknown, 0 Unchecked, 6.26ms Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2437.55ms Time] [2021-11-05 15:41:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82287 states. [2021-11-05 15:41:36,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82287 to 81433. [2021-11-05 15:41:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81433 states, 81425 states have (on average 1.3671476819158734) internal successors, (111320), 81432 states have internal predecessors, (111320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:36,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81433 states to 81433 states and 111320 transitions. [2021-11-05 15:41:36,938 INFO L78 Accepts]: Start accepts. Automaton has 81433 states and 111320 transitions. Word has length 90 [2021-11-05 15:41:36,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:41:36,938 INFO L470 AbstractCegarLoop]: Abstraction has 81433 states and 111320 transitions. [2021-11-05 15:41:36,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 81433 states and 111320 transitions. [2021-11-05 15:41:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 15:41:36,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:41:36,950 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:41:37,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 15:41:37,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-05 15:41:37,176 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:41:37,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:41:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1841486479, now seen corresponding path program 1 times [2021-11-05 15:41:37,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:41:37,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956985091] [2021-11-05 15:41:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:41:37,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:41:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:41:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 15:41:38,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:41:38,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956985091] [2021-11-05 15:41:38,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956985091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:41:38,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:41:38,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:41:38,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70038271] [2021-11-05 15:41:38,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:41:38,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:41:38,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:41:38,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:41:38,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:41:38,020 INFO L87 Difference]: Start difference. First operand 81433 states and 111320 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:40,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:41:44,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:41:44,319 INFO L93 Difference]: Finished difference Result 182950 states and 250975 transitions. [2021-11-05 15:41:44,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:41:44,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 91 [2021-11-05 15:41:44,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:41:44,511 INFO L225 Difference]: With dead ends: 182950 [2021-11-05 15:41:44,511 INFO L226 Difference]: Without dead ends: 101520 [2021-11-05 15:41:44,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:41:44,756 INFO L933 BasicCegarLoop]: 3504 mSDtfsCounter, 1681 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2277.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 5287 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.71ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2413.27ms IncrementalHoareTripleChecker+Time [2021-11-05 15:41:44,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 5287 Invalid, 106 Unknown, 0 Unchecked, 4.71ms Time], IncrementalHoareTripleChecker [22 Valid, 83 Invalid, 1 Unknown, 0 Unchecked, 2413.27ms Time] [2021-11-05 15:41:44,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101520 states. [2021-11-05 15:41:48,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101520 to 101497. [2021-11-05 15:41:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101497 states, 101489 states have (on average 1.3659411364778449) internal successors, (138628), 101496 states have internal predecessors, (138628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101497 states to 101497 states and 138628 transitions. [2021-11-05 15:41:49,279 INFO L78 Accepts]: Start accepts. Automaton has 101497 states and 138628 transitions. Word has length 91 [2021-11-05 15:41:49,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:41:49,280 INFO L470 AbstractCegarLoop]: Abstraction has 101497 states and 138628 transitions. [2021-11-05 15:41:49,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:41:49,280 INFO L276 IsEmpty]: Start isEmpty. Operand 101497 states and 138628 transitions. [2021-11-05 15:41:49,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 15:41:49,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:41:49,291 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:41:49,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 15:41:49,291 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 15:41:49,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:41:49,292 INFO L85 PathProgramCache]: Analyzing trace with hash 561622801, now seen corresponding path program 1 times [2021-11-05 15:41:49,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:41:49,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933921080] [2021-11-05 15:41:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:41:49,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:41:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:41:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 15:41:49,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:41:49,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933921080] [2021-11-05 15:41:49,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933921080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:41:49,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:41:49,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 15:41:49,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282827558] [2021-11-05 15:41:49,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:41:49,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 15:41:49,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:41:49,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 15:41:49,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 15:41:49,800 INFO L87 Difference]: Start difference. First operand 101497 states and 138628 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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)