./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 fcb8e130 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-dev-fcb8e13 [2021-11-22 22:29:05,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 22:29:05,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 22:29:05,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 22:29:05,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 22:29:05,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 22:29:05,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 22:29:05,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 22:29:05,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 22:29:05,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 22:29:05,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 22:29:05,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 22:29:05,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 22:29:05,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 22:29:05,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 22:29:05,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 22:29:05,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 22:29:05,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 22:29:05,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 22:29:05,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 22:29:05,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 22:29:05,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 22:29:05,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 22:29:05,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 22:29:05,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 22:29:05,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 22:29:05,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 22:29:05,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 22:29:05,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 22:29:05,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 22:29:05,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 22:29:05,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 22:29:05,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 22:29:05,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 22:29:05,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 22:29:05,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 22:29:05,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 22:29:05,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 22:29:05,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 22:29:05,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 22:29:05,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 22:29:05,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 22:29:05,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 22:29:05,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 22:29:05,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 22:29:05,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 22:29:05,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 22:29:05,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 22:29:05,407 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 22:29:05,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 22:29:05,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 22:29:05,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 22:29:05,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 22:29:05,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 22:29:05,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 22:29:05,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 22:29:05,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 22:29:05,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 22:29:05,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 22:29:05,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 22:29:05,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 22:29:05,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 22:29:05,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 22:29:05,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 22:29:05,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 22:29:05,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 22:29:05,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 22:29:05,411 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 22:29:05,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 22:29:05,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 22:29:05,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 22:29:05,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2021-11-22 22:29:05,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 22:29:05,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 22:29:05,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 22:29:05,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 22:29:05,624 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 22:29:05,625 INFO L432 ainManager$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 [2021-11-22 22:29:05,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8188210/4f5184408f9541ef90995f5904fe92cf/FLAGa22b1a099 [2021-11-22 22:29:06,228 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 22:29:06,228 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 [2021-11-22 22:29:06,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8188210/4f5184408f9541ef90995f5904fe92cf/FLAGa22b1a099 [2021-11-22 22:29:06,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8188210/4f5184408f9541ef90995f5904fe92cf [2021-11-22 22:29:06,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 22:29:06,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 22:29:06,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 22:29:06,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 22:29:06,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 22:29:06,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:29:06" (1/1) ... [2021-11-22 22:29:06,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d93fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:06, skipping insertion in model container [2021-11-22 22:29:06,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:29:06" (1/1) ... [2021-11-22 22:29:06,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 22:29:06,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 22:29:07,322 WARN L230 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] [2021-11-22 22:29:07,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 22:29:07,429 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 22:29:07,536 WARN L230 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] [2021-11-22 22:29:07,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 22:29:07,664 INFO L208 MainTranslator]: Completed translation [2021-11-22 22:29:07,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:07 WrapperNode [2021-11-22 22:29:07,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 22:29:07,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 22:29:07,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 22:29:07,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 22:29:07,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:07" (1/1) ... [2021-11-22 22:29:07,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:07" (1/1) ... [2021-11-22 22:29:07,996 INFO L137 Inliner]: procedures = 133, calls = 4943, calls flagged for inlining = 160, calls inlined = 606, statements flattened = 10425 [2021-11-22 22:29:07,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 22:29:07,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 22:29:07,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 22:29:07,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 22:29:08,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:07" (1/1) ... [2021-11-22 22:29:08,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:07" (1/1) ... [2021-11-22 22:29:08,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:07" (1/1) ... [2021-11-22 22:29:08,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:07" (1/1) ... [2021-11-22 22:29:08,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:07" (1/1) ... [2021-11-22 22:29:08,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:07" (1/1) ... [2021-11-22 22:29:08,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:07" (1/1) ... [2021-11-22 22:29:08,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 22:29:08,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 22:29:08,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 22:29:08,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 22:29:08,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:07" (1/1) ... [2021-11-22 22:29:08,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 22:29:08,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:29:08,449 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) [2021-11-22 22:29:08,472 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 [2021-11-22 22:29:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 22:29:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 22:29:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 22:29:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 22:29:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 22:29:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 22:29:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 22:29:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 22:29:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 22:29:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-22 22:29:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 22:29:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 22:29:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 22:29:08,838 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 22:29:08,839 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 22:29:18,545 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 22:29:18,564 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 22:29:18,564 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 22:29:18,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:29:18 BoogieIcfgContainer [2021-11-22 22:29:18,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 22:29:18,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 22:29:18,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 22:29:18,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 22:29:18,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:29:06" (1/3) ... [2021-11-22 22:29:18,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d462eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:29:18, skipping insertion in model container [2021-11-22 22:29:18,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:29:07" (2/3) ... [2021-11-22 22:29:18,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d462eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:29:18, skipping insertion in model container [2021-11-22 22:29:18,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:29:18" (3/3) ... [2021-11-22 22:29:18,572 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2021-11-22 22:29:18,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 22:29:18,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-22 22:29:18,626 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 22:29:18,630 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 [2021-11-22 22:29:18,630 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-22 22:29:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 1470 states, 1458 states have (on average 1.3552812071330589) internal successors, (1976), 1469 states have internal predecessors, (1976), 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) [2021-11-22 22:29:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 22:29:18,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:18,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:29:18,659 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 22:29:18,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:18,663 INFO L85 PathProgramCache]: Analyzing trace with hash 763796471, now seen corresponding path program 1 times [2021-11-22 22:29:18,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:18,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027852624] [2021-11-22 22:29:18,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:18,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:29:19,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:19,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027852624] [2021-11-22 22:29:19,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027852624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:19,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:19,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:19,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142478676] [2021-11-22 22:29:19,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:19,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:19,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:19,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:19,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:19,331 INFO L87 Difference]: Start difference. First operand has 1470 states, 1458 states have (on average 1.3552812071330589) internal successors, (1976), 1469 states have internal predecessors, (1976), 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 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) [2021-11-22 22:29:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:19,710 INFO L93 Difference]: Finished difference Result 4217 states and 5657 transitions. [2021-11-22 22:29:19,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:19,712 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 [2021-11-22 22:29:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:19,728 INFO L225 Difference]: With dead ends: 4217 [2021-11-22 22:29:19,728 INFO L226 Difference]: Without dead ends: 2742 [2021-11-22 22:29:19,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:19,735 INFO L933 BasicCegarLoop]: 1941 mSDtfsCounter, 1701 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 3815 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:19,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1701 Valid, 3815 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 22:29:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2021-11-22 22:29:19,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2724. [2021-11-22 22:29:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2713 states have (on average 1.3350534463693329) internal successors, (3622), 2723 states have internal predecessors, (3622), 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) [2021-11-22 22:29:19,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3622 transitions. [2021-11-22 22:29:19,821 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3622 transitions. Word has length 15 [2021-11-22 22:29:19,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:19,822 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3622 transitions. [2021-11-22 22:29:19,822 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) [2021-11-22 22:29:19,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3622 transitions. [2021-11-22 22:29:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 22:29:19,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:19,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:29:19,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 22:29:19,823 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 22:29:19,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:19,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1159406325, now seen corresponding path program 1 times [2021-11-22 22:29:19,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:19,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619201058] [2021-11-22 22:29:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:19,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:29:20,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:20,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619201058] [2021-11-22 22:29:20,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619201058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:20,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:20,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:20,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754723527] [2021-11-22 22:29:20,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:20,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:20,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:20,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:20,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:20,180 INFO L87 Difference]: Start difference. First operand 2724 states and 3622 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-11-22 22:29:20,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:20,564 INFO L93 Difference]: Finished difference Result 7999 states and 10645 transitions. [2021-11-22 22:29:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:20,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-11-22 22:29:20,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:20,579 INFO L225 Difference]: With dead ends: 7999 [2021-11-22 22:29:20,579 INFO L226 Difference]: Without dead ends: 5278 [2021-11-22 22:29:20,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:20,584 INFO L933 BasicCegarLoop]: 2167 mSDtfsCounter, 1910 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 3993 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:20,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1910 Valid, 3993 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 22:29:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5278 states. [2021-11-22 22:29:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5278 to 5262. [2021-11-22 22:29:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5262 states, 5251 states have (on average 1.3353646924395353) internal successors, (7012), 5261 states have internal predecessors, (7012), 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) [2021-11-22 22:29:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 7012 transitions. [2021-11-22 22:29:20,673 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 7012 transitions. Word has length 16 [2021-11-22 22:29:20,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:20,674 INFO L470 AbstractCegarLoop]: Abstraction has 5262 states and 7012 transitions. [2021-11-22 22:29:20,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-11-22 22:29:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 7012 transitions. [2021-11-22 22:29:20,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 22:29:20,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:20,675 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] [2021-11-22 22:29:20,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 22:29:20,676 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)] === [2021-11-22 22:29:20,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash -848537914, now seen corresponding path program 1 times [2021-11-22 22:29:20,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:20,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307873284] [2021-11-22 22:29:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:20,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:29:21,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:21,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307873284] [2021-11-22 22:29:21,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307873284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:21,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:21,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 22:29:21,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575263609] [2021-11-22 22:29:21,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:21,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 22:29:21,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:21,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 22:29:21,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:29:21,033 INFO L87 Difference]: Start difference. First operand 5262 states and 7012 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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) [2021-11-22 22:29:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:21,819 INFO L93 Difference]: Finished difference Result 26152 states and 34852 transitions. [2021-11-22 22:29:21,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 22:29:21,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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 [2021-11-22 22:29:21,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:21,890 INFO L225 Difference]: With dead ends: 26152 [2021-11-22 22:29:21,890 INFO L226 Difference]: Without dead ends: 20893 [2021-11-22 22:29:21,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-22 22:29:21,915 INFO L933 BasicCegarLoop]: 3794 mSDtfsCounter, 11416 mSDsluCounter, 15209 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11416 SdHoareTripleChecker+Valid, 19003 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:21,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11416 Valid, 19003 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 22:29:21,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20893 states. [2021-11-22 22:29:22,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20893 to 5304. [2021-11-22 22:29:22,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 5293 states have (on average 1.3345928584923483) internal successors, (7064), 5303 states have internal predecessors, (7064), 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) [2021-11-22 22:29:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 7064 transitions. [2021-11-22 22:29:22,143 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 7064 transitions. Word has length 24 [2021-11-22 22:29:22,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:22,143 INFO L470 AbstractCegarLoop]: Abstraction has 5304 states and 7064 transitions. [2021-11-22 22:29:22,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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) [2021-11-22 22:29:22,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 7064 transitions. [2021-11-22 22:29:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 22:29:22,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:22,145 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] [2021-11-22 22:29:22,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 22:29:22,145 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)] === [2021-11-22 22:29:22,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:22,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1859655164, now seen corresponding path program 1 times [2021-11-22 22:29:22,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:22,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10758330] [2021-11-22 22:29:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:22,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:29:22,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:22,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10758330] [2021-11-22 22:29:22,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10758330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:22,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:22,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:22,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444176470] [2021-11-22 22:29:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:22,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:22,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:22,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:22,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:22,546 INFO L87 Difference]: Start difference. First operand 5304 states and 7064 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) [2021-11-22 22:29:22,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:22,865 INFO L93 Difference]: Finished difference Result 5324 states and 7082 transitions. [2021-11-22 22:29:22,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:22,866 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 [2021-11-22 22:29:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:22,883 INFO L225 Difference]: With dead ends: 5324 [2021-11-22 22:29:22,884 INFO L226 Difference]: Without dead ends: 5314 [2021-11-22 22:29:22,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:22,892 INFO L933 BasicCegarLoop]: 1944 mSDtfsCounter, 1931 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:22,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1931 Valid, 1953 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:22,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5314 states. [2021-11-22 22:29:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5314 to 5304. [2021-11-22 22:29:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 5293 states have (on average 1.3344039297184962) internal successors, (7063), 5303 states have internal predecessors, (7063), 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) [2021-11-22 22:29:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 7063 transitions. [2021-11-22 22:29:23,070 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 7063 transitions. Word has length 24 [2021-11-22 22:29:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:23,071 INFO L470 AbstractCegarLoop]: Abstraction has 5304 states and 7063 transitions. [2021-11-22 22:29:23,071 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) [2021-11-22 22:29:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 7063 transitions. [2021-11-22 22:29:23,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 22:29:23,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:23,075 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] [2021-11-22 22:29:23,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 22:29:23,075 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)] === [2021-11-22 22:29:23,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1857808122, now seen corresponding path program 1 times [2021-11-22 22:29:23,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:23,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123811422] [2021-11-22 22:29:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:23,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:29:23,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:23,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123811422] [2021-11-22 22:29:23,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123811422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:23,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:23,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:23,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887953631] [2021-11-22 22:29:23,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:23,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:23,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:23,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:23,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:23,429 INFO L87 Difference]: Start difference. First operand 5304 states and 7063 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) [2021-11-22 22:29:23,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:23,681 INFO L93 Difference]: Finished difference Result 5304 states and 7063 transitions. [2021-11-22 22:29:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:23,682 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 [2021-11-22 22:29:23,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:23,690 INFO L225 Difference]: With dead ends: 5304 [2021-11-22 22:29:23,690 INFO L226 Difference]: Without dead ends: 5302 [2021-11-22 22:29:23,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:23,693 INFO L933 BasicCegarLoop]: 1933 mSDtfsCounter, 1912 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:23,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1912 Valid, 1933 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5302 states. [2021-11-22 22:29:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5302 to 5302. [2021-11-22 22:29:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5302 states, 5292 states have (on average 1.3342781557067271) internal successors, (7061), 5301 states have internal predecessors, (7061), 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) [2021-11-22 22:29:23,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 7061 transitions. [2021-11-22 22:29:23,905 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 7061 transitions. Word has length 24 [2021-11-22 22:29:23,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:23,906 INFO L470 AbstractCegarLoop]: Abstraction has 5302 states and 7061 transitions. [2021-11-22 22:29:23,906 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) [2021-11-22 22:29:23,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 7061 transitions. [2021-11-22 22:29:23,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 22:29:23,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:23,908 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] [2021-11-22 22:29:23,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 22:29:23,912 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)] === [2021-11-22 22:29:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:23,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1757474072, now seen corresponding path program 1 times [2021-11-22 22:29:23,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:23,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196343751] [2021-11-22 22:29:23,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:23,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:29:24,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:24,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196343751] [2021-11-22 22:29:24,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196343751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:24,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:24,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:24,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932780802] [2021-11-22 22:29:24,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:24,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:24,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:24,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:24,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:24,265 INFO L87 Difference]: Start difference. First operand 5302 states and 7061 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) [2021-11-22 22:29:24,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:24,542 INFO L93 Difference]: Finished difference Result 5302 states and 7061 transitions. [2021-11-22 22:29:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:24,543 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 [2021-11-22 22:29:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:24,552 INFO L225 Difference]: With dead ends: 5302 [2021-11-22 22:29:24,552 INFO L226 Difference]: Without dead ends: 5300 [2021-11-22 22:29:24,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:24,555 INFO L933 BasicCegarLoop]: 1931 mSDtfsCounter, 1909 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:24,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1909 Valid, 1931 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:24,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5300 states. [2021-11-22 22:29:24,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5300 to 5300. [2021-11-22 22:29:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5291 states have (on average 1.3341523341523343) internal successors, (7059), 5299 states have internal predecessors, (7059), 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) [2021-11-22 22:29:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 7059 transitions. [2021-11-22 22:29:24,699 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 7059 transitions. Word has length 25 [2021-11-22 22:29:24,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:24,699 INFO L470 AbstractCegarLoop]: Abstraction has 5300 states and 7059 transitions. [2021-11-22 22:29:24,699 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) [2021-11-22 22:29:24,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 7059 transitions. [2021-11-22 22:29:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 22:29:24,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:24,700 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] [2021-11-22 22:29:24,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 22:29:24,701 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)] === [2021-11-22 22:29:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:24,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1352881489, now seen corresponding path program 1 times [2021-11-22 22:29:24,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:24,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771841054] [2021-11-22 22:29:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:24,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:29:25,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:25,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771841054] [2021-11-22 22:29:25,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771841054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:25,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:25,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:25,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845654343] [2021-11-22 22:29:25,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:25,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:25,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:25,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:25,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:25,024 INFO L87 Difference]: Start difference. First operand 5300 states and 7059 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-11-22 22:29:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:25,415 INFO L93 Difference]: Finished difference Result 12054 states and 16089 transitions. [2021-11-22 22:29:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:25,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-11-22 22:29:25,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:25,429 INFO L225 Difference]: With dead ends: 12054 [2021-11-22 22:29:25,429 INFO L226 Difference]: Without dead ends: 6749 [2021-11-22 22:29:25,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:25,437 INFO L933 BasicCegarLoop]: 1925 mSDtfsCounter, 678 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 3755 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:25,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 3755 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:25,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6749 states. [2021-11-22 22:29:25,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6749 to 6719. [2021-11-22 22:29:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6719 states, 6710 states have (on average 1.3375558867362145) internal successors, (8975), 6718 states have internal predecessors, (8975), 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) [2021-11-22 22:29:25,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6719 states to 6719 states and 8975 transitions. [2021-11-22 22:29:25,616 INFO L78 Accepts]: Start accepts. Automaton has 6719 states and 8975 transitions. Word has length 26 [2021-11-22 22:29:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:25,616 INFO L470 AbstractCegarLoop]: Abstraction has 6719 states and 8975 transitions. [2021-11-22 22:29:25,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-11-22 22:29:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 6719 states and 8975 transitions. [2021-11-22 22:29:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 22:29:25,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:25,619 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] [2021-11-22 22:29:25,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 22:29:25,620 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)] === [2021-11-22 22:29:25,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:25,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1885449347, now seen corresponding path program 1 times [2021-11-22 22:29:25,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:25,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475697302] [2021-11-22 22:29:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:25,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:29:25,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:25,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475697302] [2021-11-22 22:29:25,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475697302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:25,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:25,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:25,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670653443] [2021-11-22 22:29:25,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:25,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:25,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:25,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:25,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:25,957 INFO L87 Difference]: Start difference. First operand 6719 states and 8975 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) [2021-11-22 22:29:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:26,471 INFO L93 Difference]: Finished difference Result 16703 states and 22380 transitions. [2021-11-22 22:29:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:26,471 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 [2021-11-22 22:29:26,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:26,489 INFO L225 Difference]: With dead ends: 16703 [2021-11-22 22:29:26,489 INFO L226 Difference]: Without dead ends: 9987 [2021-11-22 22:29:26,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:26,500 INFO L933 BasicCegarLoop]: 3604 mSDtfsCounter, 1754 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:26,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1754 Valid, 5469 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 22:29:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2021-11-22 22:29:26,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 9973. [2021-11-22 22:29:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9973 states, 9964 states have (on average 1.336109995985548) internal successors, (13313), 9972 states have internal predecessors, (13313), 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) [2021-11-22 22:29:26,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9973 states to 9973 states and 13313 transitions. [2021-11-22 22:29:26,733 INFO L78 Accepts]: Start accepts. Automaton has 9973 states and 13313 transitions. Word has length 33 [2021-11-22 22:29:26,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:26,734 INFO L470 AbstractCegarLoop]: Abstraction has 9973 states and 13313 transitions. [2021-11-22 22:29:26,734 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) [2021-11-22 22:29:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 9973 states and 13313 transitions. [2021-11-22 22:29:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-22 22:29:26,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:26,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:29:26,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 22:29:26,736 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)] === [2021-11-22 22:29:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:26,737 INFO L85 PathProgramCache]: Analyzing trace with hash 42663400, now seen corresponding path program 1 times [2021-11-22 22:29:26,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:26,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126240394] [2021-11-22 22:29:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:26,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:29:27,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:27,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126240394] [2021-11-22 22:29:27,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126240394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:27,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:27,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:27,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085811975] [2021-11-22 22:29:27,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:27,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:27,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:27,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:27,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:27,033 INFO L87 Difference]: Start difference. First operand 9973 states and 13313 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-22 22:29:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:27,522 INFO L93 Difference]: Finished difference Result 21303 states and 28583 transitions. [2021-11-22 22:29:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:27,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-22 22:29:27,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:27,542 INFO L225 Difference]: With dead ends: 21303 [2021-11-22 22:29:27,542 INFO L226 Difference]: Without dead ends: 11333 [2021-11-22 22:29:27,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:27,557 INFO L933 BasicCegarLoop]: 1932 mSDtfsCounter, 342 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 3847 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:27,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 3847 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11333 states. [2021-11-22 22:29:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11333 to 11277. [2021-11-22 22:29:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11277 states, 11268 states have (on average 1.3497515086971956) internal successors, (15209), 11276 states have internal predecessors, (15209), 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) [2021-11-22 22:29:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11277 states to 11277 states and 15209 transitions. [2021-11-22 22:29:27,882 INFO L78 Accepts]: Start accepts. Automaton has 11277 states and 15209 transitions. Word has length 46 [2021-11-22 22:29:27,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:27,883 INFO L470 AbstractCegarLoop]: Abstraction has 11277 states and 15209 transitions. [2021-11-22 22:29:27,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-22 22:29:27,883 INFO L276 IsEmpty]: Start isEmpty. Operand 11277 states and 15209 transitions. [2021-11-22 22:29:27,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-22 22:29:27,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:27,885 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] [2021-11-22 22:29:27,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 22:29:27,885 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)] === [2021-11-22 22:29:27,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:27,886 INFO L85 PathProgramCache]: Analyzing trace with hash 588787907, now seen corresponding path program 1 times [2021-11-22 22:29:27,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:27,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412119455] [2021-11-22 22:29:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:27,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 22:29:28,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:28,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412119455] [2021-11-22 22:29:28,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412119455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:28,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:28,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:28,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98233333] [2021-11-22 22:29:28,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:28,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:28,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:28,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:28,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:28,231 INFO L87 Difference]: Start difference. First operand 11277 states and 15209 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) [2021-11-22 22:29:28,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:28,833 INFO L93 Difference]: Finished difference Result 26201 states and 35480 transitions. [2021-11-22 22:29:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:28,838 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 [2021-11-22 22:29:28,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:28,863 INFO L225 Difference]: With dead ends: 26201 [2021-11-22 22:29:28,864 INFO L226 Difference]: Without dead ends: 14927 [2021-11-22 22:29:28,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:28,875 INFO L933 BasicCegarLoop]: 3667 mSDtfsCounter, 1804 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 5483 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:28,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1804 Valid, 5483 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14927 states. [2021-11-22 22:29:29,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14927 to 14913. [2021-11-22 22:29:29,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14913 states, 14904 states have (on average 1.3482957595276437) internal successors, (20095), 14912 states have internal predecessors, (20095), 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) [2021-11-22 22:29:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14913 states to 14913 states and 20095 transitions. [2021-11-22 22:29:29,204 INFO L78 Accepts]: Start accepts. Automaton has 14913 states and 20095 transitions. Word has length 54 [2021-11-22 22:29:29,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:29,205 INFO L470 AbstractCegarLoop]: Abstraction has 14913 states and 20095 transitions. [2021-11-22 22:29:29,205 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) [2021-11-22 22:29:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 14913 states and 20095 transitions. [2021-11-22 22:29:29,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-22 22:29:29,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:29,209 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:29:29,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 22:29:29,209 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)] === [2021-11-22 22:29:29,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:29,210 INFO L85 PathProgramCache]: Analyzing trace with hash -691547811, now seen corresponding path program 1 times [2021-11-22 22:29:29,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:29,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437666297] [2021-11-22 22:29:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:29,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 22:29:29,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:29,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437666297] [2021-11-22 22:29:29,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437666297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:29,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:29,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:29,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148519060] [2021-11-22 22:29:29,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:29,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:29,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:29,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:29,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:29,555 INFO L87 Difference]: Start difference. First operand 14913 states and 20095 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-22 22:29:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:29,852 INFO L93 Difference]: Finished difference Result 29831 states and 40203 transitions. [2021-11-22 22:29:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:29,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 70 [2021-11-22 22:29:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:29,880 INFO L225 Difference]: With dead ends: 29831 [2021-11-22 22:29:29,881 INFO L226 Difference]: Without dead ends: 14921 [2021-11-22 22:29:29,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:29,900 INFO L933 BasicCegarLoop]: 1931 mSDtfsCounter, 0 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3857 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:29,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3857 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:29:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14921 states. [2021-11-22 22:29:30,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14921 to 14921. [2021-11-22 22:29:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14921 states, 14912 states have (on average 1.348108905579399) internal successors, (20103), 14920 states have internal predecessors, (20103), 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) [2021-11-22 22:29:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14921 states to 14921 states and 20103 transitions. [2021-11-22 22:29:30,337 INFO L78 Accepts]: Start accepts. Automaton has 14921 states and 20103 transitions. Word has length 70 [2021-11-22 22:29:30,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:30,337 INFO L470 AbstractCegarLoop]: Abstraction has 14921 states and 20103 transitions. [2021-11-22 22:29:30,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-22 22:29:30,337 INFO L276 IsEmpty]: Start isEmpty. Operand 14921 states and 20103 transitions. [2021-11-22 22:29:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-22 22:29:30,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:30,340 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:29:30,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 22:29:30,341 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)] === [2021-11-22 22:29:30,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:30,341 INFO L85 PathProgramCache]: Analyzing trace with hash -689700769, now seen corresponding path program 1 times [2021-11-22 22:29:30,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:30,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180586365] [2021-11-22 22:29:30,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:30,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 22:29:30,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:30,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180586365] [2021-11-22 22:29:30,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180586365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:30,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:30,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:30,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035683009] [2021-11-22 22:29:30,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:30,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:30,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:30,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:30,686 INFO L87 Difference]: Start difference. First operand 14921 states and 20103 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-22 22:29:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:31,184 INFO L93 Difference]: Finished difference Result 29837 states and 40202 transitions. [2021-11-22 22:29:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:31,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 70 [2021-11-22 22:29:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:31,308 INFO L225 Difference]: With dead ends: 29837 [2021-11-22 22:29:31,312 INFO L226 Difference]: Without dead ends: 14919 [2021-11-22 22:29:31,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:31,326 INFO L933 BasicCegarLoop]: 2450 mSDtfsCounter, 1829 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:31,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 3134 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:31,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14919 states. [2021-11-22 22:29:31,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14919 to 14782. [2021-11-22 22:29:31,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14782 states, 14774 states have (on average 1.3475700555029104) internal successors, (19909), 14781 states have internal predecessors, (19909), 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) [2021-11-22 22:29:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14782 states to 14782 states and 19909 transitions. [2021-11-22 22:29:31,651 INFO L78 Accepts]: Start accepts. Automaton has 14782 states and 19909 transitions. Word has length 70 [2021-11-22 22:29:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:31,652 INFO L470 AbstractCegarLoop]: Abstraction has 14782 states and 19909 transitions. [2021-11-22 22:29:31,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-22 22:29:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 14782 states and 19909 transitions. [2021-11-22 22:29:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 22:29:31,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:31,660 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] [2021-11-22 22:29:31,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 22:29:31,661 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 22:29:31,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:31,661 INFO L85 PathProgramCache]: Analyzing trace with hash -634601951, now seen corresponding path program 1 times [2021-11-22 22:29:31,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:31,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526234967] [2021-11-22 22:29:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:31,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-22 22:29:31,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:31,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526234967] [2021-11-22 22:29:31,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526234967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:31,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:31,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:31,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968703525] [2021-11-22 22:29:31,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:31,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:31,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:31,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:31,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:31,978 INFO L87 Difference]: Start difference. First operand 14782 states and 19909 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-22 22:29:32,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:32,641 INFO L93 Difference]: Finished difference Result 33203 states and 44868 transitions. [2021-11-22 22:29:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:32,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 75 [2021-11-22 22:29:32,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:32,669 INFO L225 Difference]: With dead ends: 33203 [2021-11-22 22:29:32,669 INFO L226 Difference]: Without dead ends: 18424 [2021-11-22 22:29:32,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:32,687 INFO L933 BasicCegarLoop]: 3652 mSDtfsCounter, 1753 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 5513 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:32,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 5513 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:32,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18424 states. [2021-11-22 22:29:33,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18424 to 18404. [2021-11-22 22:29:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18404 states, 18396 states have (on average 1.3467601652533159) internal successors, (24775), 18403 states have internal predecessors, (24775), 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) [2021-11-22 22:29:33,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18404 states to 18404 states and 24775 transitions. [2021-11-22 22:29:33,217 INFO L78 Accepts]: Start accepts. Automaton has 18404 states and 24775 transitions. Word has length 75 [2021-11-22 22:29:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:33,218 INFO L470 AbstractCegarLoop]: Abstraction has 18404 states and 24775 transitions. [2021-11-22 22:29:33,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-22 22:29:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 18404 states and 24775 transitions. [2021-11-22 22:29:33,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 22:29:33,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:33,222 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] [2021-11-22 22:29:33,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 22:29:33,222 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 22:29:33,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:33,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1914465629, now seen corresponding path program 1 times [2021-11-22 22:29:33,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:33,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624462251] [2021-11-22 22:29:33,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:33,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-22 22:29:33,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:33,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624462251] [2021-11-22 22:29:33,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624462251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:33,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:33,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:29:33,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168604694] [2021-11-22 22:29:33,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:33,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:29:33,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:33,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:29:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:29:33,525 INFO L87 Difference]: Start difference. First operand 18404 states and 24775 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-22 22:29:34,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:34,213 INFO L93 Difference]: Finished difference Result 27092 states and 36405 transitions. [2021-11-22 22:29:34,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:29:34,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 75 [2021-11-22 22:29:34,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:34,256 INFO L225 Difference]: With dead ends: 27092 [2021-11-22 22:29:34,256 INFO L226 Difference]: Without dead ends: 25315 [2021-11-22 22:29:34,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:29:34,269 INFO L933 BasicCegarLoop]: 3678 mSDtfsCounter, 3804 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3804 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:34,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3804 Valid, 5473 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25315 states. [2021-11-22 22:29:34,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25315 to 18404. [2021-11-22 22:29:34,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18404 states, 18396 states have (on average 1.346542726679713) internal successors, (24771), 18403 states have internal predecessors, (24771), 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) [2021-11-22 22:29:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18404 states to 18404 states and 24771 transitions. [2021-11-22 22:29:34,841 INFO L78 Accepts]: Start accepts. Automaton has 18404 states and 24771 transitions. Word has length 75 [2021-11-22 22:29:34,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:34,842 INFO L470 AbstractCegarLoop]: Abstraction has 18404 states and 24771 transitions. [2021-11-22 22:29:34,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-22 22:29:34,842 INFO L276 IsEmpty]: Start isEmpty. Operand 18404 states and 24771 transitions. [2021-11-22 22:29:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-22 22:29:34,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:34,846 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:29:34,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 22:29:34,846 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 22:29:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:34,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1714230198, now seen corresponding path program 1 times [2021-11-22 22:29:34,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:34,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354864220] [2021-11-22 22:29:34,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:34,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 22:29:35,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:35,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354864220] [2021-11-22 22:29:35,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354864220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:35,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:35,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:35,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433390115] [2021-11-22 22:29:35,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:35,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:35,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:35,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:35,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:35,137 INFO L87 Difference]: Start difference. First operand 18404 states and 24771 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-22 22:29:35,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:35,839 INFO L93 Difference]: Finished difference Result 40447 states and 54592 transitions. [2021-11-22 22:29:35,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:35,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-22 22:29:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:35,873 INFO L225 Difference]: With dead ends: 40447 [2021-11-22 22:29:35,873 INFO L226 Difference]: Without dead ends: 22046 [2021-11-22 22:29:35,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:35,899 INFO L933 BasicCegarLoop]: 3664 mSDtfsCounter, 1753 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 5524 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:35,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 5524 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22046 states. [2021-11-22 22:29:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22046 to 22026. [2021-11-22 22:29:36,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22026 states, 22018 states have (on average 1.3460350622218185) internal successors, (29637), 22025 states have internal predecessors, (29637), 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) [2021-11-22 22:29:36,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22026 states to 22026 states and 29637 transitions. [2021-11-22 22:29:36,559 INFO L78 Accepts]: Start accepts. Automaton has 22026 states and 29637 transitions. Word has length 76 [2021-11-22 22:29:36,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:36,559 INFO L470 AbstractCegarLoop]: Abstraction has 22026 states and 29637 transitions. [2021-11-22 22:29:36,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-22 22:29:36,560 INFO L276 IsEmpty]: Start isEmpty. Operand 22026 states and 29637 transitions. [2021-11-22 22:29:36,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-22 22:29:36,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:36,563 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:29:36,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 22:29:36,564 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 22:29:36,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:36,564 INFO L85 PathProgramCache]: Analyzing trace with hash 434366520, now seen corresponding path program 1 times [2021-11-22 22:29:36,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:36,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793623653] [2021-11-22 22:29:36,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:36,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 22:29:36,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:36,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793623653] [2021-11-22 22:29:36,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793623653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:36,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:36,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:29:36,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555441978] [2021-11-22 22:29:36,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:36,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:29:36,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:36,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:29:36,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:29:36,852 INFO L87 Difference]: Start difference. First operand 22026 states and 29637 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-22 22:29:37,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:37,700 INFO L93 Difference]: Finished difference Result 30714 states and 41267 transitions. [2021-11-22 22:29:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:29:37,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-22 22:29:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:37,743 INFO L225 Difference]: With dead ends: 30714 [2021-11-22 22:29:37,743 INFO L226 Difference]: Without dead ends: 28937 [2021-11-22 22:29:37,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:29:37,752 INFO L933 BasicCegarLoop]: 3677 mSDtfsCounter, 3802 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3802 SdHoareTripleChecker+Valid, 5472 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:37,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3802 Valid, 5472 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28937 states. [2021-11-22 22:29:38,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28937 to 22026. [2021-11-22 22:29:38,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22026 states, 22018 states have (on average 1.3458533926787175) internal successors, (29633), 22025 states have internal predecessors, (29633), 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) [2021-11-22 22:29:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22026 states to 22026 states and 29633 transitions. [2021-11-22 22:29:38,339 INFO L78 Accepts]: Start accepts. Automaton has 22026 states and 29633 transitions. Word has length 76 [2021-11-22 22:29:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:38,340 INFO L470 AbstractCegarLoop]: Abstraction has 22026 states and 29633 transitions. [2021-11-22 22:29:38,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-22 22:29:38,340 INFO L276 IsEmpty]: Start isEmpty. Operand 22026 states and 29633 transitions. [2021-11-22 22:29:38,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-22 22:29:38,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:38,343 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] [2021-11-22 22:29:38,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 22:29:38,344 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 22:29:38,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:38,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1994272977, now seen corresponding path program 1 times [2021-11-22 22:29:38,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:38,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953396794] [2021-11-22 22:29:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:38,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 22:29:38,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:38,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953396794] [2021-11-22 22:29:38,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953396794] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:29:38,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014566656] [2021-11-22 22:29:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:38,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:29:38,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:29:38,640 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) [2021-11-22 22:29:38,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 22:29:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:40,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 12066 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 22:29:40,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:29:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-22 22:29:40,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 22:29:40,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014566656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:40,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 22:29:40,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2021-11-22 22:29:40,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061107806] [2021-11-22 22:29:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:40,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 22:29:40,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:40,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 22:29:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-22 22:29:40,304 INFO L87 Difference]: Start difference. First operand 22026 states and 29633 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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) [2021-11-22 22:29:42,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:42,744 INFO L93 Difference]: Finished difference Result 65310 states and 87926 transitions. [2021-11-22 22:29:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 22:29:42,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-22 22:29:42,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:42,823 INFO L225 Difference]: With dead ends: 65310 [2021-11-22 22:29:42,824 INFO L226 Difference]: Without dead ends: 43227 [2021-11-22 22:29:42,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-22 22:29:42,860 INFO L933 BasicCegarLoop]: 3843 mSDtfsCounter, 3884 mSDsluCounter, 19157 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3884 SdHoareTripleChecker+Valid, 23000 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:42,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3884 Valid, 23000 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 22:29:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43227 states. [2021-11-22 22:29:43,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43227 to 22031. [2021-11-22 22:29:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22031 states, 22023 states have (on average 1.3441402170458157) internal successors, (29602), 22030 states have internal predecessors, (29602), 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) [2021-11-22 22:29:43,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22031 states to 22031 states and 29602 transitions. [2021-11-22 22:29:43,803 INFO L78 Accepts]: Start accepts. Automaton has 22031 states and 29602 transitions. Word has length 76 [2021-11-22 22:29:43,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:43,803 INFO L470 AbstractCegarLoop]: Abstraction has 22031 states and 29602 transitions. [2021-11-22 22:29:43,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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) [2021-11-22 22:29:43,804 INFO L276 IsEmpty]: Start isEmpty. Operand 22031 states and 29602 transitions. [2021-11-22 22:29:43,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-22 22:29:43,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:43,807 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] [2021-11-22 22:29:43,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 22:29:44,013 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,SelfDestructingSolverStorable16 [2021-11-22 22:29:44,014 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 22:29:44,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:44,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1637243905, now seen corresponding path program 1 times [2021-11-22 22:29:44,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:44,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166855274] [2021-11-22 22:29:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:44,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-22 22:29:44,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:44,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166855274] [2021-11-22 22:29:44,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166855274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:44,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:44,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:29:44,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823172087] [2021-11-22 22:29:44,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:44,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:29:44,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:44,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:29:44,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:29:44,393 INFO L87 Difference]: Start difference. First operand 22031 states and 29602 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-11-22 22:29:47,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:47,180 INFO L93 Difference]: Finished difference Result 105809 states and 142404 transitions. [2021-11-22 22:29:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 22:29:47,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 88 [2021-11-22 22:29:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:47,323 INFO L225 Difference]: With dead ends: 105809 [2021-11-22 22:29:47,324 INFO L226 Difference]: Without dead ends: 83781 [2021-11-22 22:29:47,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:29:47,362 INFO L933 BasicCegarLoop]: 4076 mSDtfsCounter, 5589 mSDsluCounter, 5968 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5589 SdHoareTripleChecker+Valid, 10044 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:47,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5589 Valid, 10044 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:47,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83781 states. [2021-11-22 22:29:48,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83781 to 22055. [2021-11-22 22:29:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22055 states, 22047 states have (on average 1.3437655916904794) internal successors, (29626), 22054 states have internal predecessors, (29626), 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) [2021-11-22 22:29:48,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22055 states to 22055 states and 29626 transitions. [2021-11-22 22:29:48,483 INFO L78 Accepts]: Start accepts. Automaton has 22055 states and 29626 transitions. Word has length 88 [2021-11-22 22:29:48,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:48,484 INFO L470 AbstractCegarLoop]: Abstraction has 22055 states and 29626 transitions. [2021-11-22 22:29:48,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-11-22 22:29:48,484 INFO L276 IsEmpty]: Start isEmpty. Operand 22055 states and 29626 transitions. [2021-11-22 22:29:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 22:29:48,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:48,488 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] [2021-11-22 22:29:48,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 22:29:48,488 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 22:29:48,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:48,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1997926389, now seen corresponding path program 1 times [2021-11-22 22:29:48,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:48,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953745633] [2021-11-22 22:29:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:48,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-22 22:29:48,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:48,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953745633] [2021-11-22 22:29:48,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953745633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:48,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:29:48,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:29:48,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113764657] [2021-11-22 22:29:48,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:48,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:29:48,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:29:48,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:48,788 INFO L87 Difference]: Start difference. First operand 22055 states and 29626 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-22 22:29:51,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:29:51,200 INFO L93 Difference]: Finished difference Result 65242 states and 87727 transitions. [2021-11-22 22:29:51,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:29:51,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 [2021-11-22 22:29:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:29:51,276 INFO L225 Difference]: With dead ends: 65242 [2021-11-22 22:29:51,276 INFO L226 Difference]: Without dead ends: 43190 [2021-11-22 22:29:51,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:29:51,325 INFO L933 BasicCegarLoop]: 1950 mSDtfsCounter, 1903 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:29:51,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1903 Valid, 3873 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:29:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43190 states. [2021-11-22 22:29:53,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43190 to 42915. [2021-11-22 22:29:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42915 states, 42907 states have (on average 1.3458410049642249) internal successors, (57746), 42914 states have internal predecessors, (57746), 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) [2021-11-22 22:29:53,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42915 states to 42915 states and 57746 transitions. [2021-11-22 22:29:53,366 INFO L78 Accepts]: Start accepts. Automaton has 42915 states and 57746 transitions. Word has length 90 [2021-11-22 22:29:53,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:29:53,367 INFO L470 AbstractCegarLoop]: Abstraction has 42915 states and 57746 transitions. [2021-11-22 22:29:53,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-22 22:29:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 42915 states and 57746 transitions. [2021-11-22 22:29:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-22 22:29:53,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:29:53,373 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, 1, 1, 1] [2021-11-22 22:29:53,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 22:29:53,373 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 22:29:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:29:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2101467263, now seen corresponding path program 1 times [2021-11-22 22:29:53,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:29:53,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641613735] [2021-11-22 22:29:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:53,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:29:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 22:29:53,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:29:53,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641613735] [2021-11-22 22:29:53,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641613735] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:29:53,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881917806] [2021-11-22 22:29:53,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:29:53,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:29:53,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:29:53,708 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) [2021-11-22 22:29:53,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 22:29:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:29:55,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 12167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 22:29:55,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:29:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 22:29:55,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 22:29:55,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881917806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:29:55,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 22:29:55,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-22 22:29:55,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771561878] [2021-11-22 22:29:55,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:29:55,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:29:55,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:29:55,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:29:55,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:29:55,410 INFO L87 Difference]: Start difference. First operand 42915 states and 57746 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-11-22 22:30:00,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:30:00,445 INFO L93 Difference]: Finished difference Result 128741 states and 173233 transitions. [2021-11-22 22:30:00,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:30:00,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 93 [2021-11-22 22:30:00,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:30:00,680 INFO L225 Difference]: With dead ends: 128741 [2021-11-22 22:30:00,680 INFO L226 Difference]: Without dead ends: 128731 [2021-11-22 22:30:00,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:30:00,717 INFO L933 BasicCegarLoop]: 3668 mSDtfsCounter, 3932 mSDsluCounter, 3835 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3932 SdHoareTripleChecker+Valid, 7503 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:30:00,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3932 Valid, 7503 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:30:00,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128731 states. [2021-11-22 22:30:06,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128731 to 127539. [2021-11-22 22:30:06,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127539 states, 127531 states have (on average 1.3476409657259802) internal successors, (171866), 127538 states have internal predecessors, (171866), 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) [2021-11-22 22:30:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127539 states to 127539 states and 171866 transitions. [2021-11-22 22:30:07,044 INFO L78 Accepts]: Start accepts. Automaton has 127539 states and 171866 transitions. Word has length 93 [2021-11-22 22:30:07,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:30:07,044 INFO L470 AbstractCegarLoop]: Abstraction has 127539 states and 171866 transitions. [2021-11-22 22:30:07,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-11-22 22:30:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 127539 states and 171866 transitions. [2021-11-22 22:30:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-22 22:30:07,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:30:07,054 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2021-11-22 22:30:07,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 22:30:07,267 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,SelfDestructingSolverStorable19 [2021-11-22 22:30:07,267 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 22:30:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:30:07,268 INFO L85 PathProgramCache]: Analyzing trace with hash -336381462, now seen corresponding path program 1 times [2021-11-22 22:30:07,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:30:07,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14258167] [2021-11-22 22:30:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:30:07,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:30:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:30:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-22 22:30:07,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:30:07,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14258167] [2021-11-22 22:30:07,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14258167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:30:07,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:30:07,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:30:07,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47793965] [2021-11-22 22:30:07,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:30:07,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:30:07,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:30:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:30:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:30:07,571 INFO L87 Difference]: Start difference. First operand 127539 states and 171866 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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)