./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 16:30:43,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:30:43,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:30:43,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:30:43,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:30:43,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:30:43,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:30:43,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:30:43,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:30:43,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:30:43,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:30:43,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:30:43,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:30:43,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:30:43,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:30:43,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:30:43,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:30:43,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:30:43,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:30:43,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:30:43,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:30:43,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:30:43,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:30:43,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:30:43,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:30:43,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:30:43,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:30:43,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:30:43,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:30:43,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:30:43,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:30:43,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:30:43,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:30:43,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:30:43,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:30:43,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:30:43,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:30:43,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:30:43,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:30:43,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:30:43,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:30:43,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:30:43,306 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:30:43,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:30:43,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:30:43,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:30:43,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:30:43,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:30:43,309 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:30:43,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:30:43,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:30:43,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:30:43,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:30:43,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:30:43,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:30:43,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:30:43,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:30:43,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:30:43,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:30:43,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:30:43,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:30:43,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:30:43,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:30:43,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:30:43,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:30:43,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:30:43,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:30:43,312 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:30:43,313 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:30:43,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:30:43,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:30:43,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 [2021-11-06 16:30:43,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:30:43,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:30:43,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:30:43,554 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:30:43,555 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:30:43,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-06 16:30:43,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7770ee2/047484a8c7c3495f9ee2769e9caa7cf7/FLAG7a2cda273 [2021-11-06 16:30:44,177 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:30:44,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-06 16:30:44,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7770ee2/047484a8c7c3495f9ee2769e9caa7cf7/FLAG7a2cda273 [2021-11-06 16:30:44,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7770ee2/047484a8c7c3495f9ee2769e9caa7cf7 [2021-11-06 16:30:44,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:30:44,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:30:44,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:30:44,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:30:44,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:30:44,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:30:44" (1/1) ... [2021-11-06 16:30:44,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1224e0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:44, skipping insertion in model container [2021-11-06 16:30:44,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:30:44" (1/1) ... [2021-11-06 16:30:44,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:30:44,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:30:45,463 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2021-11-06 16:30:45,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:30:45,535 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:30:45,729 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2021-11-06 16:30:45,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:30:45,854 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:30:45,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:45 WrapperNode [2021-11-06 16:30:45,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:30:45,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:30:45,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:30:45,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:30:45,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:45" (1/1) ... [2021-11-06 16:30:45,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:45" (1/1) ... [2021-11-06 16:30:46,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:30:46,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:30:46,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:30:46,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:30:46,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:45" (1/1) ... [2021-11-06 16:30:46,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:45" (1/1) ... [2021-11-06 16:30:46,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:45" (1/1) ... [2021-11-06 16:30:46,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:45" (1/1) ... [2021-11-06 16:30:46,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:45" (1/1) ... [2021-11-06 16:30:46,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:45" (1/1) ... [2021-11-06 16:30:46,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:45" (1/1) ... [2021-11-06 16:30:46,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:30:46,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:30:46,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:30:46,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:30:46,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:45" (1/1) ... [2021-11-06 16:30:46,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:30:46,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:30:46,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 16:30:46,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 16:30:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 16:30:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 16:30:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:30:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:30:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:30:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:30:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 16:30:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 16:30:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:30:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:30:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:30:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:30:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 16:30:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:30:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:30:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:30:55,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:30:55,401 INFO L299 CfgBuilder]: Removed 2088 assume(true) statements. [2021-11-06 16:30:55,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:30:55 BoogieIcfgContainer [2021-11-06 16:30:55,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:30:55,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:30:55,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:30:55,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:30:55,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:30:44" (1/3) ... [2021-11-06 16:30:55,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e34316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:30:55, skipping insertion in model container [2021-11-06 16:30:55,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:30:45" (2/3) ... [2021-11-06 16:30:55,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e34316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:30:55, skipping insertion in model container [2021-11-06 16:30:55,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:30:55" (3/3) ... [2021-11-06 16:30:55,413 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-06 16:30:55,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:30:55,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2021-11-06 16:30:55,456 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:30:55,459 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 16:30:55,460 INFO L340 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2021-11-06 16:30:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 2619 states, 2576 states have (on average 1.529503105590062) internal successors, (3940), 2618 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:55,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 16:30:55,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:30:55,508 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:30:55,508 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:30:55,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:30:55,512 INFO L85 PathProgramCache]: Analyzing trace with hash -571058910, now seen corresponding path program 1 times [2021-11-06 16:30:55,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:30:55,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773981490] [2021-11-06 16:30:55,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:30:55,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:30:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:30:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:30:55,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:30:55,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773981490] [2021-11-06 16:30:55,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773981490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:30:55,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:30:55,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:30:55,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238025582] [2021-11-06 16:30:55,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 16:30:55,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:30:55,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 16:30:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:30:55,859 INFO L87 Difference]: Start difference. First operand has 2619 states, 2576 states have (on average 1.529503105590062) internal successors, (3940), 2618 states have internal predecessors, (3940), 0 states have call successors, (0), 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 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:55,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:30:55,928 INFO L93 Difference]: Finished difference Result 5234 states and 7875 transitions. [2021-11-06 16:30:55,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 16:30:55,930 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-06 16:30:55,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:30:55,951 INFO L225 Difference]: With dead ends: 5234 [2021-11-06 16:30:55,952 INFO L226 Difference]: Without dead ends: 2611 [2021-11-06 16:30:55,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:30:55,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-11-06 16:30:56,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2611. [2021-11-06 16:30:56,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2569 states have (on average 1.5021409108602568) internal successors, (3859), 2610 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3859 transitions. [2021-11-06 16:30:56,056 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3859 transitions. Word has length 71 [2021-11-06 16:30:56,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:30:56,056 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3859 transitions. [2021-11-06 16:30:56,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:56,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3859 transitions. [2021-11-06 16:30:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 16:30:56,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:30:56,062 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:30:56,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:30:56,063 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:30:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:30:56,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1311868076, now seen corresponding path program 1 times [2021-11-06 16:30:56,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:30:56,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649873553] [2021-11-06 16:30:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:30:56,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:30:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:30:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:30:56,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:30:56,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649873553] [2021-11-06 16:30:56,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649873553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:30:56,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:30:56,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:30:56,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860911745] [2021-11-06 16:30:56,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:30:56,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:30:56,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:30:56,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:30:56,345 INFO L87 Difference]: Start difference. First operand 2611 states and 3859 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:56,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:30:56,455 INFO L93 Difference]: Finished difference Result 5832 states and 8527 transitions. [2021-11-06 16:30:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:30:56,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-06 16:30:56,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:30:56,466 INFO L225 Difference]: With dead ends: 5832 [2021-11-06 16:30:56,467 INFO L226 Difference]: Without dead ends: 3283 [2021-11-06 16:30:56,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:30:56,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-11-06 16:30:56,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 3195. [2021-11-06 16:30:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 3153 states have (on average 1.4808119251506502) internal successors, (4669), 3194 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:56,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 4669 transitions. [2021-11-06 16:30:56,523 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 4669 transitions. Word has length 71 [2021-11-06 16:30:56,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:30:56,523 INFO L470 AbstractCegarLoop]: Abstraction has 3195 states and 4669 transitions. [2021-11-06 16:30:56,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:56,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 4669 transitions. [2021-11-06 16:30:56,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 16:30:56,525 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:30:56,525 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:30:56,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:30:56,525 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:30:56,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:30:56,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2119557104, now seen corresponding path program 1 times [2021-11-06 16:30:56,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:30:56,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448386560] [2021-11-06 16:30:56,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:30:56,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:30:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:30:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:30:56,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:30:56,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448386560] [2021-11-06 16:30:56,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448386560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:30:56,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:30:56,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:30:56,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512582337] [2021-11-06 16:30:56,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:30:56,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:30:56,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:30:56,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:30:56,634 INFO L87 Difference]: Start difference. First operand 3195 states and 4669 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:58,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:30:58,788 INFO L93 Difference]: Finished difference Result 9134 states and 13478 transitions. [2021-11-06 16:30:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:30:58,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-06 16:30:58,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:30:58,806 INFO L225 Difference]: With dead ends: 9134 [2021-11-06 16:30:58,806 INFO L226 Difference]: Without dead ends: 6001 [2021-11-06 16:30:58,811 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:30:58,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2021-11-06 16:30:58,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 5937. [2021-11-06 16:30:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5937 states, 5895 states have (on average 1.4999151823579304) internal successors, (8842), 5936 states have internal predecessors, (8842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5937 states to 5937 states and 8842 transitions. [2021-11-06 16:30:58,904 INFO L78 Accepts]: Start accepts. Automaton has 5937 states and 8842 transitions. Word has length 74 [2021-11-06 16:30:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:30:58,904 INFO L470 AbstractCegarLoop]: Abstraction has 5937 states and 8842 transitions. [2021-11-06 16:30:58,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5937 states and 8842 transitions. [2021-11-06 16:30:58,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 16:30:58,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:30:58,906 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:30:58,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:30:58,906 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:30:58,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:30:58,906 INFO L85 PathProgramCache]: Analyzing trace with hash 472182075, now seen corresponding path program 1 times [2021-11-06 16:30:58,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:30:58,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951330686] [2021-11-06 16:30:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:30:58,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:30:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:30:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:30:59,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:30:59,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951330686] [2021-11-06 16:30:59,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951330686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:30:59,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:30:59,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:30:59,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999241931] [2021-11-06 16:30:59,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:30:59,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:30:59,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:30:59,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:30:59,055 INFO L87 Difference]: Start difference. First operand 5937 states and 8842 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:59,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:30:59,296 INFO L93 Difference]: Finished difference Result 15721 states and 23656 transitions. [2021-11-06 16:30:59,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:30:59,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 16:30:59,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:30:59,329 INFO L225 Difference]: With dead ends: 15721 [2021-11-06 16:30:59,329 INFO L226 Difference]: Without dead ends: 9846 [2021-11-06 16:30:59,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:30:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9846 states. [2021-11-06 16:30:59,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9846 to 9618. [2021-11-06 16:30:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9618 states, 9576 states have (on average 1.5279866332497911) internal successors, (14632), 9617 states have internal predecessors, (14632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9618 states to 9618 states and 14632 transitions. [2021-11-06 16:30:59,587 INFO L78 Accepts]: Start accepts. Automaton has 9618 states and 14632 transitions. Word has length 78 [2021-11-06 16:30:59,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:30:59,587 INFO L470 AbstractCegarLoop]: Abstraction has 9618 states and 14632 transitions. [2021-11-06 16:30:59,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:30:59,588 INFO L276 IsEmpty]: Start isEmpty. Operand 9618 states and 14632 transitions. [2021-11-06 16:30:59,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 16:30:59,588 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:30:59,588 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:30:59,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 16:30:59,589 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:30:59,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:30:59,589 INFO L85 PathProgramCache]: Analyzing trace with hash -658626127, now seen corresponding path program 1 times [2021-11-06 16:30:59,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:30:59,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576828599] [2021-11-06 16:30:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:30:59,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:30:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:30:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:30:59,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:30:59,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576828599] [2021-11-06 16:30:59,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576828599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:30:59,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:30:59,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:30:59,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086074366] [2021-11-06 16:30:59,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:30:59,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:30:59,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:30:59,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:30:59,713 INFO L87 Difference]: Start difference. First operand 9618 states and 14632 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:00,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:00,100 INFO L93 Difference]: Finished difference Result 28033 states and 42946 transitions. [2021-11-06 16:31:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:31:00,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 16:31:00,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:00,155 INFO L225 Difference]: With dead ends: 28033 [2021-11-06 16:31:00,156 INFO L226 Difference]: Without dead ends: 18476 [2021-11-06 16:31:00,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:00,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18476 states. [2021-11-06 16:31:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18476 to 18206. [2021-11-06 16:31:00,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18206 states, 18166 states have (on average 1.539084003082682) internal successors, (27959), 18205 states have internal predecessors, (27959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18206 states to 18206 states and 27959 transitions. [2021-11-06 16:31:00,529 INFO L78 Accepts]: Start accepts. Automaton has 18206 states and 27959 transitions. Word has length 87 [2021-11-06 16:31:00,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:00,530 INFO L470 AbstractCegarLoop]: Abstraction has 18206 states and 27959 transitions. [2021-11-06 16:31:00,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:00,531 INFO L276 IsEmpty]: Start isEmpty. Operand 18206 states and 27959 transitions. [2021-11-06 16:31:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 16:31:00,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:00,535 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:00,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 16:31:00,536 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:00,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash -268580366, now seen corresponding path program 1 times [2021-11-06 16:31:00,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:00,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727383349] [2021-11-06 16:31:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:00,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:31:00,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:00,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727383349] [2021-11-06 16:31:00,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727383349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:00,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:31:00,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:31:00,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060035830] [2021-11-06 16:31:00,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:31:00,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:00,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:31:00,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:00,680 INFO L87 Difference]: Start difference. First operand 18206 states and 27959 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 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) [2021-11-06 16:31:00,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:00,912 INFO L93 Difference]: Finished difference Result 18206 states and 27959 transitions. [2021-11-06 16:31:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:31:00,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 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 89 [2021-11-06 16:31:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:00,951 INFO L225 Difference]: With dead ends: 18206 [2021-11-06 16:31:00,951 INFO L226 Difference]: Without dead ends: 18204 [2021-11-06 16:31:00,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18204 states. [2021-11-06 16:31:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18204 to 18204. [2021-11-06 16:31:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18204 states, 18165 states have (on average 1.5390035783099367) internal successors, (27956), 18203 states have internal predecessors, (27956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:01,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18204 states to 18204 states and 27956 transitions. [2021-11-06 16:31:01,274 INFO L78 Accepts]: Start accepts. Automaton has 18204 states and 27956 transitions. Word has length 89 [2021-11-06 16:31:01,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:01,275 INFO L470 AbstractCegarLoop]: Abstraction has 18204 states and 27956 transitions. [2021-11-06 16:31:01,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 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) [2021-11-06 16:31:01,275 INFO L276 IsEmpty]: Start isEmpty. Operand 18204 states and 27956 transitions. [2021-11-06 16:31:01,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 16:31:01,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:01,276 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:01,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 16:31:01,276 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:01,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:01,277 INFO L85 PathProgramCache]: Analyzing trace with hash 263959193, now seen corresponding path program 1 times [2021-11-06 16:31:01,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:01,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824248990] [2021-11-06 16:31:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:01,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:31:01,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:01,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824248990] [2021-11-06 16:31:01,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824248990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:01,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:31:01,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:31:01,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776632143] [2021-11-06 16:31:01,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:31:01,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:01,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:31:01,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:01,395 INFO L87 Difference]: Start difference. First operand 18204 states and 27956 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:01,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:01,597 INFO L93 Difference]: Finished difference Result 18204 states and 27956 transitions. [2021-11-06 16:31:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:31:01,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 [2021-11-06 16:31:01,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:01,634 INFO L225 Difference]: With dead ends: 18204 [2021-11-06 16:31:01,634 INFO L226 Difference]: Without dead ends: 18202 [2021-11-06 16:31:01,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18202 states. [2021-11-06 16:31:01,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18202 to 18202. [2021-11-06 16:31:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18202 states, 18164 states have (on average 1.5389231446817881) internal successors, (27953), 18201 states have internal predecessors, (27953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:01,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18202 states to 18202 states and 27953 transitions. [2021-11-06 16:31:01,976 INFO L78 Accepts]: Start accepts. Automaton has 18202 states and 27953 transitions. Word has length 90 [2021-11-06 16:31:01,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:01,976 INFO L470 AbstractCegarLoop]: Abstraction has 18202 states and 27953 transitions. [2021-11-06 16:31:01,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:01,977 INFO L276 IsEmpty]: Start isEmpty. Operand 18202 states and 27953 transitions. [2021-11-06 16:31:01,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 16:31:01,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:01,977 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:01,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 16:31:01,978 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:01,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:01,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1363288266, now seen corresponding path program 1 times [2021-11-06 16:31:01,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:01,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868199489] [2021-11-06 16:31:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:01,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:31:02,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:02,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868199489] [2021-11-06 16:31:02,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868199489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:02,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:31:02,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:31:02,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131898767] [2021-11-06 16:31:02,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:31:02,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:31:02,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:02,125 INFO L87 Difference]: Start difference. First operand 18202 states and 27953 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:04,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:04,585 INFO L93 Difference]: Finished difference Result 36274 states and 55769 transitions. [2021-11-06 16:31:04,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:31:04,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-06 16:31:04,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:04,625 INFO L225 Difference]: With dead ends: 36274 [2021-11-06 16:31:04,625 INFO L226 Difference]: Without dead ends: 18134 [2021-11-06 16:31:04,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:04,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18134 states. [2021-11-06 16:31:04,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18134 to 18060. [2021-11-06 16:31:04,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18060 states, 18036 states have (on average 1.5367043690396984) internal successors, (27716), 18059 states have internal predecessors, (27716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:04,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18060 states to 18060 states and 27716 transitions. [2021-11-06 16:31:04,958 INFO L78 Accepts]: Start accepts. Automaton has 18060 states and 27716 transitions. Word has length 91 [2021-11-06 16:31:04,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:04,958 INFO L470 AbstractCegarLoop]: Abstraction has 18060 states and 27716 transitions. [2021-11-06 16:31:04,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:04,958 INFO L276 IsEmpty]: Start isEmpty. Operand 18060 states and 27716 transitions. [2021-11-06 16:31:04,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 16:31:04,959 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:04,959 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:04,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 16:31:04,959 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:04,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:04,960 INFO L85 PathProgramCache]: Analyzing trace with hash -407183652, now seen corresponding path program 1 times [2021-11-06 16:31:04,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:04,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903679906] [2021-11-06 16:31:04,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:04,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:31:05,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:05,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903679906] [2021-11-06 16:31:05,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903679906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:05,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:31:05,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:31:05,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071393580] [2021-11-06 16:31:05,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:31:05,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:05,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:31:05,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:05,081 INFO L87 Difference]: Start difference. First operand 18060 states and 27716 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:05,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:05,270 INFO L93 Difference]: Finished difference Result 18060 states and 27716 transitions. [2021-11-06 16:31:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:31:05,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-06 16:31:05,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:05,306 INFO L225 Difference]: With dead ends: 18060 [2021-11-06 16:31:05,306 INFO L226 Difference]: Without dead ends: 18027 [2021-11-06 16:31:05,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18027 states. [2021-11-06 16:31:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18027 to 18027. [2021-11-06 16:31:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18027 states, 18004 states have (on average 1.536825149966674) internal successors, (27669), 18026 states have internal predecessors, (27669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:05,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18027 states to 18027 states and 27669 transitions. [2021-11-06 16:31:05,616 INFO L78 Accepts]: Start accepts. Automaton has 18027 states and 27669 transitions. Word has length 91 [2021-11-06 16:31:05,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:05,616 INFO L470 AbstractCegarLoop]: Abstraction has 18027 states and 27669 transitions. [2021-11-06 16:31:05,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:05,617 INFO L276 IsEmpty]: Start isEmpty. Operand 18027 states and 27669 transitions. [2021-11-06 16:31:05,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 16:31:05,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:05,618 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:05,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 16:31:05,618 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:05,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1882604641, now seen corresponding path program 1 times [2021-11-06 16:31:05,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:05,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388686067] [2021-11-06 16:31:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:05,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:31:05,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:05,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388686067] [2021-11-06 16:31:05,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388686067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:05,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:31:05,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:31:05,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732161506] [2021-11-06 16:31:05,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:31:05,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:31:05,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:05,725 INFO L87 Difference]: Start difference. First operand 18027 states and 27669 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:08,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:08,101 INFO L93 Difference]: Finished difference Result 38106 states and 58231 transitions. [2021-11-06 16:31:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:31:08,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-06 16:31:08,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:08,136 INFO L225 Difference]: With dead ends: 38106 [2021-11-06 16:31:08,136 INFO L226 Difference]: Without dead ends: 20141 [2021-11-06 16:31:08,159 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:08,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20141 states. [2021-11-06 16:31:08,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20141 to 20063. [2021-11-06 16:31:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20063 states, 20040 states have (on average 1.521806387225549) internal successors, (30497), 20062 states have internal predecessors, (30497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20063 states to 20063 states and 30497 transitions. [2021-11-06 16:31:08,475 INFO L78 Accepts]: Start accepts. Automaton has 20063 states and 30497 transitions. Word has length 105 [2021-11-06 16:31:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:08,475 INFO L470 AbstractCegarLoop]: Abstraction has 20063 states and 30497 transitions. [2021-11-06 16:31:08,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:08,476 INFO L276 IsEmpty]: Start isEmpty. Operand 20063 states and 30497 transitions. [2021-11-06 16:31:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-06 16:31:08,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:08,478 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:08,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 16:31:08,479 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:08,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash -57225292, now seen corresponding path program 1 times [2021-11-06 16:31:08,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:08,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224397903] [2021-11-06 16:31:08,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:08,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:08,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 16:31:08,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:08,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224397903] [2021-11-06 16:31:08,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224397903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:08,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:31:08,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:31:08,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189020485] [2021-11-06 16:31:08,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:31:08,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:08,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:31:08,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:08,596 INFO L87 Difference]: Start difference. First operand 20063 states and 30497 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:10,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:10,992 INFO L93 Difference]: Finished difference Result 42178 states and 63887 transitions. [2021-11-06 16:31:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:31:10,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 115 [2021-11-06 16:31:10,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:11,040 INFO L225 Difference]: With dead ends: 42178 [2021-11-06 16:31:11,041 INFO L226 Difference]: Without dead ends: 22177 [2021-11-06 16:31:11,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:11,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22177 states. [2021-11-06 16:31:11,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22177 to 22099. [2021-11-06 16:31:11,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22099 states, 22076 states have (on average 1.5095578909222684) internal successors, (33325), 22098 states have internal predecessors, (33325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:11,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22099 states to 22099 states and 33325 transitions. [2021-11-06 16:31:11,551 INFO L78 Accepts]: Start accepts. Automaton has 22099 states and 33325 transitions. Word has length 115 [2021-11-06 16:31:11,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:11,552 INFO L470 AbstractCegarLoop]: Abstraction has 22099 states and 33325 transitions. [2021-11-06 16:31:11,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:11,552 INFO L276 IsEmpty]: Start isEmpty. Operand 22099 states and 33325 transitions. [2021-11-06 16:31:11,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-06 16:31:11,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:11,555 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:11,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 16:31:11,555 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1050209459, now seen corresponding path program 1 times [2021-11-06 16:31:11,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:11,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125151813] [2021-11-06 16:31:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:11,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:31:11,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:11,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125151813] [2021-11-06 16:31:11,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125151813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:11,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:31:11,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:31:11,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253191903] [2021-11-06 16:31:11,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:31:11,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:11,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:31:11,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:31:11,662 INFO L87 Difference]: Start difference. First operand 22099 states and 33325 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:12,238 INFO L93 Difference]: Finished difference Result 54505 states and 82421 transitions. [2021-11-06 16:31:12,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 16:31:12,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-06 16:31:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:12,300 INFO L225 Difference]: With dead ends: 54505 [2021-11-06 16:31:12,301 INFO L226 Difference]: Without dead ends: 32468 [2021-11-06 16:31:12,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:31:12,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32468 states. [2021-11-06 16:31:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32468 to 22019. [2021-11-06 16:31:12,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22019 states, 21996 states have (on average 1.510911074740862) internal successors, (33234), 22018 states have internal predecessors, (33234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22019 states to 22019 states and 33234 transitions. [2021-11-06 16:31:12,910 INFO L78 Accepts]: Start accepts. Automaton has 22019 states and 33234 transitions. Word has length 121 [2021-11-06 16:31:12,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:12,910 INFO L470 AbstractCegarLoop]: Abstraction has 22019 states and 33234 transitions. [2021-11-06 16:31:12,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:12,910 INFO L276 IsEmpty]: Start isEmpty. Operand 22019 states and 33234 transitions. [2021-11-06 16:31:12,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 16:31:12,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:12,913 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:12,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 16:31:12,913 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:12,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:12,914 INFO L85 PathProgramCache]: Analyzing trace with hash -247642266, now seen corresponding path program 1 times [2021-11-06 16:31:12,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:12,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588497785] [2021-11-06 16:31:12,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:12,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:31:13,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:13,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588497785] [2021-11-06 16:31:13,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588497785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:13,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:31:13,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:31:13,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704918933] [2021-11-06 16:31:13,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:31:13,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:13,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:31:13,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:13,090 INFO L87 Difference]: Start difference. First operand 22019 states and 33234 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:15,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:15,618 INFO L93 Difference]: Finished difference Result 52287 states and 79333 transitions. [2021-11-06 16:31:15,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:31:15,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-06 16:31:15,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:15,669 INFO L225 Difference]: With dead ends: 52287 [2021-11-06 16:31:15,669 INFO L226 Difference]: Without dead ends: 30330 [2021-11-06 16:31:15,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:15,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30330 states. [2021-11-06 16:31:16,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30330 to 30067. [2021-11-06 16:31:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30067 states, 30044 states have (on average 1.521634935428039) internal successors, (45716), 30066 states have internal predecessors, (45716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:16,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30067 states to 30067 states and 45716 transitions. [2021-11-06 16:31:16,300 INFO L78 Accepts]: Start accepts. Automaton has 30067 states and 45716 transitions. Word has length 125 [2021-11-06 16:31:16,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:16,300 INFO L470 AbstractCegarLoop]: Abstraction has 30067 states and 45716 transitions. [2021-11-06 16:31:16,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:16,301 INFO L276 IsEmpty]: Start isEmpty. Operand 30067 states and 45716 transitions. [2021-11-06 16:31:16,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 16:31:16,304 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:16,304 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:16,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 16:31:16,305 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:16,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:16,305 INFO L85 PathProgramCache]: Analyzing trace with hash 89053511, now seen corresponding path program 1 times [2021-11-06 16:31:16,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:16,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924801452] [2021-11-06 16:31:16,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:16,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 16:31:16,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:16,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924801452] [2021-11-06 16:31:16,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924801452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:16,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:31:16,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:31:16,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229270080] [2021-11-06 16:31:16,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:31:16,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:16,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:31:16,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:16,489 INFO L87 Difference]: Start difference. First operand 30067 states and 45716 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:17,350 INFO L93 Difference]: Finished difference Result 81844 states and 125240 transitions. [2021-11-06 16:31:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:31:17,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 131 [2021-11-06 16:31:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:17,433 INFO L225 Difference]: With dead ends: 81844 [2021-11-06 16:31:17,434 INFO L226 Difference]: Without dead ends: 51839 [2021-11-06 16:31:17,472 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:17,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51839 states. [2021-11-06 16:31:18,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51839 to 30019. [2021-11-06 16:31:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30019 states, 29996 states have (on average 1.5208694492599013) internal successors, (45620), 30018 states have internal predecessors, (45620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30019 states to 30019 states and 45620 transitions. [2021-11-06 16:31:18,324 INFO L78 Accepts]: Start accepts. Automaton has 30019 states and 45620 transitions. Word has length 131 [2021-11-06 16:31:18,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:18,325 INFO L470 AbstractCegarLoop]: Abstraction has 30019 states and 45620 transitions. [2021-11-06 16:31:18,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand 30019 states and 45620 transitions. [2021-11-06 16:31:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 16:31:18,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:18,329 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:18,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 16:31:18,329 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:18,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:18,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1239398831, now seen corresponding path program 1 times [2021-11-06 16:31:18,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:18,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197599157] [2021-11-06 16:31:18,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:18,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 16:31:18,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:18,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197599157] [2021-11-06 16:31:18,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197599157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:18,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:31:18,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:31:18,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491373358] [2021-11-06 16:31:18,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:31:18,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:18,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:31:18,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:18,495 INFO L87 Difference]: Start difference. First operand 30019 states and 45620 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:19,246 INFO L93 Difference]: Finished difference Result 60008 states and 91215 transitions. [2021-11-06 16:31:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:31:19,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 131 [2021-11-06 16:31:19,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:19,285 INFO L225 Difference]: With dead ends: 60008 [2021-11-06 16:31:19,285 INFO L226 Difference]: Without dead ends: 30025 [2021-11-06 16:31:19,301 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:31:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30025 states. [2021-11-06 16:31:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30025 to 30025. [2021-11-06 16:31:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30025 states, 30002 states have (on average 1.5207652823145124) internal successors, (45626), 30024 states have internal predecessors, (45626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30025 states to 30025 states and 45626 transitions. [2021-11-06 16:31:19,904 INFO L78 Accepts]: Start accepts. Automaton has 30025 states and 45626 transitions. Word has length 131 [2021-11-06 16:31:19,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:19,905 INFO L470 AbstractCegarLoop]: Abstraction has 30025 states and 45626 transitions. [2021-11-06 16:31:19,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:19,905 INFO L276 IsEmpty]: Start isEmpty. Operand 30025 states and 45626 transitions. [2021-11-06 16:31:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 16:31:19,908 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:19,908 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:19,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 16:31:19,909 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:19,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1002892015, now seen corresponding path program 1 times [2021-11-06 16:31:19,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:19,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602664383] [2021-11-06 16:31:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:19,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 16:31:20,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:20,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602664383] [2021-11-06 16:31:20,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602664383] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:31:20,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877359741] [2021-11-06 16:31:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:20,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:31:20,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:31:20,079 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) [2021-11-06 16:31:20,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 16:31:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:21,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-06 16:31:21,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:31:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 16:31:21,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877359741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:31:21,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 16:31:21,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 16:31:21,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765279264] [2021-11-06 16:31:21,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:31:21,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:21,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:31:21,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:31:21,974 INFO L87 Difference]: Start difference. First operand 30025 states and 45626 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:22,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:22,753 INFO L93 Difference]: Finished difference Result 60022 states and 91232 transitions. [2021-11-06 16:31:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:31:22,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 16:31:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:22,799 INFO L225 Difference]: With dead ends: 60022 [2021-11-06 16:31:22,800 INFO L226 Difference]: Without dead ends: 30034 [2021-11-06 16:31:22,830 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:31:22,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30034 states. [2021-11-06 16:31:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30034 to 30034. [2021-11-06 16:31:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30034 states, 30011 states have (on average 1.5206091099930026) internal successors, (45635), 30033 states have internal predecessors, (45635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30034 states to 30034 states and 45635 transitions. [2021-11-06 16:31:23,567 INFO L78 Accepts]: Start accepts. Automaton has 30034 states and 45635 transitions. Word has length 137 [2021-11-06 16:31:23,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:23,567 INFO L470 AbstractCegarLoop]: Abstraction has 30034 states and 45635 transitions. [2021-11-06 16:31:23,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 30034 states and 45635 transitions. [2021-11-06 16:31:23,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-06 16:31:23,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:23,571 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:23,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 16:31:23,791 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,SelfDestructingSolverStorable15 [2021-11-06 16:31:23,791 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:23,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:23,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1473292725, now seen corresponding path program 1 times [2021-11-06 16:31:23,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:23,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745466093] [2021-11-06 16:31:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:23,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-06 16:31:23,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:23,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745466093] [2021-11-06 16:31:23,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745466093] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:31:23,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464405963] [2021-11-06 16:31:23,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:23,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:31:23,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:31:23,998 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) [2021-11-06 16:31:23,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 16:31:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:27,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-06 16:31:27,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:31:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-06 16:31:28,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464405963] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:31:28,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 16:31:28,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 16:31:28,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204372496] [2021-11-06 16:31:28,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 16:31:28,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:28,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 16:31:28,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:31:28,115 INFO L87 Difference]: Start difference. First operand 30034 states and 45635 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:28,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:28,972 INFO L93 Difference]: Finished difference Result 60036 states and 91243 transitions. [2021-11-06 16:31:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:31:28,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 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 146 [2021-11-06 16:31:28,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:29,021 INFO L225 Difference]: With dead ends: 60036 [2021-11-06 16:31:29,022 INFO L226 Difference]: Without dead ends: 30040 [2021-11-06 16:31:29,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:31:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30040 states. [2021-11-06 16:31:29,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30040 to 30040. [2021-11-06 16:31:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30040 states, 30017 states have (on average 1.520505047139954) internal successors, (45641), 30039 states have internal predecessors, (45641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30040 states to 30040 states and 45641 transitions. [2021-11-06 16:31:29,926 INFO L78 Accepts]: Start accepts. Automaton has 30040 states and 45641 transitions. Word has length 146 [2021-11-06 16:31:29,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:29,926 INFO L470 AbstractCegarLoop]: Abstraction has 30040 states and 45641 transitions. [2021-11-06 16:31:29,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:29,927 INFO L276 IsEmpty]: Start isEmpty. Operand 30040 states and 45641 transitions. [2021-11-06 16:31:29,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-06 16:31:29,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:29,930 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:29,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 16:31:30,152 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,SelfDestructingSolverStorable16 [2021-11-06 16:31:30,153 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:30,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash 740970711, now seen corresponding path program 2 times [2021-11-06 16:31:30,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:30,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4194074] [2021-11-06 16:31:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:30,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-06 16:31:30,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:30,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4194074] [2021-11-06 16:31:30,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4194074] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:31:30,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477005025] [2021-11-06 16:31:30,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 16:31:30,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:31:30,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:31:30,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:31:30,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 16:31:37,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 16:31:37,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 16:31:37,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-06 16:31:37,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:31:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-06 16:31:37,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477005025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:37,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:31:37,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2021-11-06 16:31:37,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339724516] [2021-11-06 16:31:37,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 16:31:37,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:37,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 16:31:37,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-06 16:31:37,845 INFO L87 Difference]: Start difference. First operand 30040 states and 45641 transitions. Second operand has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:48,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:48,351 INFO L93 Difference]: Finished difference Result 338001 states and 519242 transitions. [2021-11-06 16:31:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-06 16:31:48,352 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 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 152 [2021-11-06 16:31:48,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:48,976 INFO L225 Difference]: With dead ends: 338001 [2021-11-06 16:31:48,977 INFO L226 Difference]: Without dead ends: 308044 [2021-11-06 16:31:49,233 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1672 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1164, Invalid=4688, Unknown=0, NotChecked=0, Total=5852 [2021-11-06 16:31:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308044 states. [2021-11-06 16:31:52,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308044 to 30244. [2021-11-06 16:31:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30244 states, 30221 states have (on average 1.516991495979617) internal successors, (45845), 30243 states have internal predecessors, (45845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30244 states to 30244 states and 45845 transitions. [2021-11-06 16:31:52,186 INFO L78 Accepts]: Start accepts. Automaton has 30244 states and 45845 transitions. Word has length 152 [2021-11-06 16:31:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:52,186 INFO L470 AbstractCegarLoop]: Abstraction has 30244 states and 45845 transitions. [2021-11-06 16:31:52,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:52,186 INFO L276 IsEmpty]: Start isEmpty. Operand 30244 states and 45845 transitions. [2021-11-06 16:31:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-06 16:31:52,189 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:52,189 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:52,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 16:31:52,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-06 16:31:52,394 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:52,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:52,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1064467623, now seen corresponding path program 1 times [2021-11-06 16:31:52,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:52,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294837852] [2021-11-06 16:31:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:52,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:52,520 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-06 16:31:52,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:52,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294837852] [2021-11-06 16:31:52,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294837852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:52,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:31:52,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 16:31:52,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064030724] [2021-11-06 16:31:52,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:31:52,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:52,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:31:52,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:31:52,523 INFO L87 Difference]: Start difference. First operand 30244 states and 45845 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:55,520 INFO L93 Difference]: Finished difference Result 87871 states and 134060 transitions. [2021-11-06 16:31:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:31:55,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 152 [2021-11-06 16:31:55,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:55,614 INFO L225 Difference]: With dead ends: 87871 [2021-11-06 16:31:55,614 INFO L226 Difference]: Without dead ends: 57710 [2021-11-06 16:31:55,642 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:31:55,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57710 states. [2021-11-06 16:31:57,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57710 to 30244. [2021-11-06 16:31:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30244 states, 30221 states have (on average 1.5158002713345025) internal successors, (45809), 30243 states have internal predecessors, (45809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:57,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30244 states to 30244 states and 45809 transitions. [2021-11-06 16:31:57,480 INFO L78 Accepts]: Start accepts. Automaton has 30244 states and 45809 transitions. Word has length 152 [2021-11-06 16:31:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:31:57,480 INFO L470 AbstractCegarLoop]: Abstraction has 30244 states and 45809 transitions. [2021-11-06 16:31:57,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:31:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 30244 states and 45809 transitions. [2021-11-06 16:31:57,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-06 16:31:57,484 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:57,484 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:31:57,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 16:31:57,485 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:31:57,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:57,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1056343142, now seen corresponding path program 1 times [2021-11-06 16:31:57,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:57,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684498648] [2021-11-06 16:31:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:57,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-06 16:31:57,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:57,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684498648] [2021-11-06 16:31:57,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684498648] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:31:57,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494477254] [2021-11-06 16:31:57,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:57,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:31:57,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:31:57,679 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:31:57,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 16:32:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:32:03,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-06 16:32:03,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:32:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-06 16:32:04,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494477254] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:32:04,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 16:32:04,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-06 16:32:04,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654715803] [2021-11-06 16:32:04,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 16:32:04,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:32:04,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 16:32:04,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-06 16:32:04,258 INFO L87 Difference]: Start difference. First operand 30244 states and 45809 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:32:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:32:06,199 INFO L93 Difference]: Finished difference Result 60455 states and 91590 transitions. [2021-11-06 16:32:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 16:32:06,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 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 158 [2021-11-06 16:32:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:32:06,248 INFO L225 Difference]: With dead ends: 60455 [2021-11-06 16:32:06,248 INFO L226 Difference]: Without dead ends: 30250 [2021-11-06 16:32:06,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-06 16:32:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30250 states. [2021-11-06 16:32:07,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30250 to 30250. [2021-11-06 16:32:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30250 states, 30227 states have (on average 1.5156978859959638) internal successors, (45815), 30249 states have internal predecessors, (45815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:32:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30250 states to 30250 states and 45815 transitions. [2021-11-06 16:32:07,944 INFO L78 Accepts]: Start accepts. Automaton has 30250 states and 45815 transitions. Word has length 158 [2021-11-06 16:32:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:32:07,944 INFO L470 AbstractCegarLoop]: Abstraction has 30250 states and 45815 transitions. [2021-11-06 16:32:07,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:32:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 30250 states and 45815 transitions. [2021-11-06 16:32:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-06 16:32:07,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:32:07,948 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:32:07,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 16:32:08,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:32:08,155 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:32:08,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:32:08,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1467844442, now seen corresponding path program 2 times [2021-11-06 16:32:08,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:32:08,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810755749] [2021-11-06 16:32:08,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:32:08,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:32:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:32:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-06 16:32:08,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:32:08,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810755749] [2021-11-06 16:32:08,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810755749] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:32:08,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27613441] [2021-11-06 16:32:08,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 16:32:08,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:32:08,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:32:08,368 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:32:08,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 16:32:18,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 16:32:18,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 16:32:18,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 2374 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-06 16:32:18,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:32:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-06 16:32:18,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27613441] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:32:18,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 16:32:18,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9] total 10 [2021-11-06 16:32:18,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449624070] [2021-11-06 16:32:18,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 16:32:18,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:32:18,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 16:32:18,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-06 16:32:18,446 INFO L87 Difference]: Start difference. First operand 30250 states and 45815 transitions. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:32:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:32:21,790 INFO L93 Difference]: Finished difference Result 90337 states and 136882 transitions. [2021-11-06 16:32:21,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 16:32:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 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 164 [2021-11-06 16:32:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:32:21,901 INFO L225 Difference]: With dead ends: 90337 [2021-11-06 16:32:21,901 INFO L226 Difference]: Without dead ends: 60126 [2021-11-06 16:32:21,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-06 16:32:21,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60126 states. [2021-11-06 16:32:23,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60126 to 30253. [2021-11-06 16:32:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30253 states, 30230 states have (on average 1.515448230234866) internal successors, (45812), 30252 states have internal predecessors, (45812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:32:23,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30253 states to 30253 states and 45812 transitions. [2021-11-06 16:32:23,926 INFO L78 Accepts]: Start accepts. Automaton has 30253 states and 45812 transitions. Word has length 164 [2021-11-06 16:32:23,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:32:23,926 INFO L470 AbstractCegarLoop]: Abstraction has 30253 states and 45812 transitions. [2021-11-06 16:32:23,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:32:23,926 INFO L276 IsEmpty]: Start isEmpty. Operand 30253 states and 45812 transitions. [2021-11-06 16:32:23,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 16:32:23,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:32:23,930 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:32:23,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 16:32:24,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:32:24,147 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:32:24,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:32:24,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1204279584, now seen corresponding path program 3 times [2021-11-06 16:32:24,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:32:24,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732179357] [2021-11-06 16:32:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:32:24,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:32:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:32:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-06 16:32:24,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:32:24,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732179357] [2021-11-06 16:32:24,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732179357] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:32:24,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403910209] [2021-11-06 16:32:24,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 16:32:24,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:32:24,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:32:24,338 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:32:24,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 16:32:44,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 16:32:44,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 16:32:44,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-06 16:32:44,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:32:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-06 16:32:45,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403910209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:32:45,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 16:32:45,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 16:32:45,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800750494] [2021-11-06 16:32:45,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 16:32:45,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:32:45,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 16:32:45,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:32:45,269 INFO L87 Difference]: Start difference. First operand 30253 states and 45812 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:32:47,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:32:47,019 INFO L93 Difference]: Finished difference Result 60450 states and 91570 transitions. [2021-11-06 16:32:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:32:47,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2021-11-06 16:32:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:32:47,062 INFO L225 Difference]: With dead ends: 60450 [2021-11-06 16:32:47,062 INFO L226 Difference]: Without dead ends: 30256 [2021-11-06 16:32:47,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:32:47,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30256 states. [2021-11-06 16:32:48,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30256 to 30256. [2021-11-06 16:32:48,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30256 states, 30233 states have (on average 1.5153970826580228) internal successors, (45815), 30255 states have internal predecessors, (45815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:32:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30256 states to 30256 states and 45815 transitions. [2021-11-06 16:32:48,757 INFO L78 Accepts]: Start accepts. Automaton has 30256 states and 45815 transitions. Word has length 167 [2021-11-06 16:32:48,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:32:48,758 INFO L470 AbstractCegarLoop]: Abstraction has 30256 states and 45815 transitions. [2021-11-06 16:32:48,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:32:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 30256 states and 45815 transitions. [2021-11-06 16:32:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-06 16:32:48,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:32:48,762 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:32:48,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 16:32:48,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:32:48,963 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:32:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:32:48,964 INFO L85 PathProgramCache]: Analyzing trace with hash 700488090, now seen corresponding path program 4 times [2021-11-06 16:32:48,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:32:48,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775239765] [2021-11-06 16:32:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:32:48,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:32:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:32:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-06 16:32:49,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:32:49,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775239765] [2021-11-06 16:32:49,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775239765] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:32:49,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217204103] [2021-11-06 16:32:49,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-06 16:32:49,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:32:49,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:32:49,143 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:32:49,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 16:32:57,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-06 16:32:57,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 16:32:57,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2410 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-06 16:32:57,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:32:58,103 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-06 16:32:58,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217204103] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:32:58,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 16:32:58,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11] total 12 [2021-11-06 16:32:58,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284919985] [2021-11-06 16:32:58,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 16:32:58,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:32:58,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 16:32:58,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-06 16:32:58,105 INFO L87 Difference]: Start difference. First operand 30256 states and 45815 transitions. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:33:01,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:33:01,732 INFO L93 Difference]: Finished difference Result 90328 states and 136860 transitions. [2021-11-06 16:33:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 16:33:01,733 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 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 170 [2021-11-06 16:33:01,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:33:01,836 INFO L225 Difference]: With dead ends: 90328 [2021-11-06 16:33:01,836 INFO L226 Difference]: Without dead ends: 60132 [2021-11-06 16:33:01,878 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-06 16:33:01,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60132 states. [2021-11-06 16:33:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60132 to 30259. [2021-11-06 16:33:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30259 states, 30236 states have (on average 1.5153459452308506) internal successors, (45818), 30258 states have internal predecessors, (45818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:33:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30259 states to 30259 states and 45818 transitions. [2021-11-06 16:33:03,840 INFO L78 Accepts]: Start accepts. Automaton has 30259 states and 45818 transitions. Word has length 170 [2021-11-06 16:33:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:33:03,840 INFO L470 AbstractCegarLoop]: Abstraction has 30259 states and 45818 transitions. [2021-11-06 16:33:03,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:33:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 30259 states and 45818 transitions. [2021-11-06 16:33:03,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-06 16:33:03,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:33:03,844 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:33:03,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 16:33:04,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:33:04,046 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:33:04,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:33:04,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1812308000, now seen corresponding path program 5 times [2021-11-06 16:33:04,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:33:04,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625522801] [2021-11-06 16:33:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:33:04,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:33:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:33:04,270 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-06 16:33:04,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:33:04,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625522801] [2021-11-06 16:33:04,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625522801] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:33:04,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949380289] [2021-11-06 16:33:04,270 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-06 16:33:04,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:33:04,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:33:04,271 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:33:04,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 16:33:05,514 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 16:33:05,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 16:33:05,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-06 16:33:05,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:33:37,306 WARN L838 $PredicateComparison]: unable to prove that (exists ((~mousedev_mix~0.offset Int)) (and (let ((.cse0 (mod (mod (+ (* ~mousedev_mix~0.offset 18446744073709551615) 2012) 18446744073709551616) 4294967296))) (or (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_mousedev_init_#res| 4294967296) .cse0))) (<= ~mousedev_mix~0.offset 2147485660) (< 2012 ~mousedev_mix~0.offset))) is different from false [2021-11-06 16:34:06,619 WARN L838 $PredicateComparison]: unable to prove that (exists ((~mousedev_mix~0.offset Int)) (and (<= ~mousedev_mix~0.offset 2147485660) (let ((.cse0 (mod (mod (+ (* ~mousedev_mix~0.offset 18446744073709551615) 2012) 18446744073709551616) 4294967296))) (or (<= (+ c_~ldv_retval_1~0 4294967296) .cse0) (<= .cse0 2147483647))) (< 2012 ~mousedev_mix~0.offset))) is different from false [2021-11-06 16:34:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-06 16:34:10,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949380289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:34:10,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:34:10,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2021-11-06 16:34:10,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451580371] [2021-11-06 16:34:10,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 16:34:10,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:34:10,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 16:34:10,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=304, Unknown=2, NotChecked=70, Total=420 [2021-11-06 16:34:10,943 INFO L87 Difference]: Start difference. First operand 30259 states and 45818 transitions. Second operand has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:34:18,263 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_~mousedev_mix~0.offset 2147485660) (= 0 |c_ULTIMATE.start_ERR_PTR_#res.base|) (<= 0 (+ c_ULTIMATE.start_mousedev_create_~error~2 2147483648)) (< c_ULTIMATE.start_mousedev_create_~minor~1 0) (exists ((~mousedev_mix~0.offset Int)) (and (<= ~mousedev_mix~0.offset 2147485660) (= (+ 18446744073709551616 |c_ULTIMATE.start_PTR_ERR_#res|) (mod (+ (* ~mousedev_mix~0.offset 18446744073709551615) 2012) 18446744073709551616)) (< 2012 ~mousedev_mix~0.offset))) (= |c_ULTIMATE.start_mousedev_create_#res.base| 0) (= |c_ULTIMATE.start_ldv_err_ptr_#res.base| 0) (<= |c_ULTIMATE.start_mousedev_create_#res.offset| 2147485660) (<= 0 (+ |c_ULTIMATE.start_input_get_new_minor_#res| 2147483648)) (<= 0 (+ c_ULTIMATE.start_mousedev_reserve_minor_~minor~0 2147483648)) (<= |c_ULTIMATE.start_ERR_PTR_#res.offset| 2147485660) (<= 0 (+ 2147483648 c_ULTIMATE.start_mousedev_create_~minor~1)) (< 2012 c_~mousedev_mix~0.offset) (< c_ULTIMATE.start_mousedev_create_~error~2 0) (<= 0 (+ |c_ULTIMATE.start_mousedev_reserve_minor_#res| 2147483648)) (< |c_ULTIMATE.start_mousedev_reserve_minor_#res| 0) (< 2012 |c_ULTIMATE.start_mousedev_create_#res.offset|) (exists ((~mousedev_mix~0.offset Int)) (and (<= ~mousedev_mix~0.offset 2147485660) (= (mod (+ (* ~mousedev_mix~0.offset 18446744073709551615) 2012) 18446744073709551616) (+ 18446744073709551616 |c_ULTIMATE.start_ldv_ptr_err_#res|)) (< 2012 ~mousedev_mix~0.offset))) (< 2012 |c_ULTIMATE.start_ldv_err_ptr_#res.offset|) (< 2012 |c_ULTIMATE.start_ERR_PTR_#res.offset|) (< c_ULTIMATE.start_mousedev_reserve_minor_~minor~0 0) (<= |c_ULTIMATE.start_ldv_err_ptr_#res.offset| 2147485660) (exists ((~mousedev_mix~0.offset Int)) (and (let ((.cse0 (mod (mod (+ (* ~mousedev_mix~0.offset 18446744073709551615) 2012) 18446744073709551616) 4294967296))) (or (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_mousedev_init_#res| 4294967296) .cse0))) (<= ~mousedev_mix~0.offset 2147485660) (< 2012 ~mousedev_mix~0.offset))) (= 0 c_~mousedev_mix~0.base)) is different from false [2021-11-06 16:34:20,896 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_~mousedev_mix~0.offset 2147485660) (= 0 |c_ULTIMATE.start_ERR_PTR_#res.base|) (<= 0 (+ c_ULTIMATE.start_mousedev_create_~error~2 2147483648)) (exists ((~mousedev_mix~0.offset Int)) (and (<= ~mousedev_mix~0.offset 2147485660) (= (+ 18446744073709551616 |c_ULTIMATE.start_PTR_ERR_#res|) (mod (+ (* ~mousedev_mix~0.offset 18446744073709551615) 2012) 18446744073709551616)) (< 2012 ~mousedev_mix~0.offset))) (= |c_ULTIMATE.start_mousedev_create_#res.base| 0) (= |c_ULTIMATE.start_ldv_err_ptr_#res.base| 0) (<= |c_ULTIMATE.start_mousedev_create_#res.offset| 2147485660) (<= 0 (+ |c_ULTIMATE.start_input_get_new_minor_#res| 2147483648)) (<= 0 (+ c_ULTIMATE.start_mousedev_reserve_minor_~minor~0 2147483648)) (<= |c_ULTIMATE.start_ERR_PTR_#res.offset| 2147485660) (< 2012 c_~mousedev_mix~0.offset) (< c_ULTIMATE.start_mousedev_create_~error~2 0) (< 2012 |c_ULTIMATE.start_mousedev_create_#res.offset|) (exists ((~mousedev_mix~0.offset Int)) (and (<= ~mousedev_mix~0.offset 2147485660) (= (mod (+ (* ~mousedev_mix~0.offset 18446744073709551615) 2012) 18446744073709551616) (+ 18446744073709551616 |c_ULTIMATE.start_ldv_ptr_err_#res|)) (< 2012 ~mousedev_mix~0.offset))) (< 2012 |c_ULTIMATE.start_ldv_err_ptr_#res.offset|) (< 2012 |c_ULTIMATE.start_ERR_PTR_#res.offset|) (<= |c_ULTIMATE.start_ldv_err_ptr_#res.offset| 2147485660) (exists ((~mousedev_mix~0.offset Int)) (and (let ((.cse0 (mod (mod (+ (* ~mousedev_mix~0.offset 18446744073709551615) 2012) 18446744073709551616) 4294967296))) (or (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_mousedev_init_#res| 4294967296) .cse0))) (<= ~mousedev_mix~0.offset 2147485660) (< 2012 ~mousedev_mix~0.offset))) (= 0 c_~mousedev_mix~0.base)) is different from false [2021-11-06 16:35:01,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:35:01,612 INFO L93 Difference]: Finished difference Result 271877 states and 416584 transitions. [2021-11-06 16:35:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-06 16:35:01,613 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2021-11-06 16:35:01,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:35:02,233 INFO L225 Difference]: With dead ends: 271877 [2021-11-06 16:35:02,233 INFO L226 Difference]: Without dead ends: 241716 [2021-11-06 16:35:02,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=744, Invalid=2574, Unknown=4, NotChecked=460, Total=3782 [2021-11-06 16:35:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241716 states. [2021-11-06 16:35:05,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241716 to 30547. [2021-11-06 16:35:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30547 states, 30524 states have (on average 1.511269820469139) internal successors, (46130), 30546 states have internal predecessors, (46130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:35:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30547 states to 30547 states and 46130 transitions. [2021-11-06 16:35:05,821 INFO L78 Accepts]: Start accepts. Automaton has 30547 states and 46130 transitions. Word has length 173 [2021-11-06 16:35:05,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:35:05,821 INFO L470 AbstractCegarLoop]: Abstraction has 30547 states and 46130 transitions. [2021-11-06 16:35:05,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:35:05,821 INFO L276 IsEmpty]: Start isEmpty. Operand 30547 states and 46130 transitions. [2021-11-06 16:35:05,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-06 16:35:05,826 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:35:05,826 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:35:05,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 16:35:06,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-06 16:35:06,027 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:35:06,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:35:06,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2102372566, now seen corresponding path program 1 times [2021-11-06 16:35:06,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:35:06,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458662051] [2021-11-06 16:35:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:35:06,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:35:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:35:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-06 16:35:06,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:35:06,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458662051] [2021-11-06 16:35:06,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458662051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:35:06,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:35:06,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 16:35:06,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626576801] [2021-11-06 16:35:06,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:35:06,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:35:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:35:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:35:06,182 INFO L87 Difference]: Start difference. First operand 30547 states and 46130 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:35:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:35:13,096 INFO L93 Difference]: Finished difference Result 121221 states and 183194 transitions. [2021-11-06 16:35:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 16:35:13,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 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 181 [2021-11-06 16:35:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:35:13,228 INFO L225 Difference]: With dead ends: 121221 [2021-11-06 16:35:13,228 INFO L226 Difference]: Without dead ends: 90772 [2021-11-06 16:35:13,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 16:35:13,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90772 states. [2021-11-06 16:35:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90772 to 30303. [2021-11-06 16:35:16,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30303 states, 30282 states have (on average 1.5120863879532396) internal successors, (45789), 30302 states have internal predecessors, (45789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:35:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30303 states to 30303 states and 45789 transitions. [2021-11-06 16:35:16,195 INFO L78 Accepts]: Start accepts. Automaton has 30303 states and 45789 transitions. Word has length 181 [2021-11-06 16:35:16,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:35:16,196 INFO L470 AbstractCegarLoop]: Abstraction has 30303 states and 45789 transitions. [2021-11-06 16:35:16,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:35:16,196 INFO L276 IsEmpty]: Start isEmpty. Operand 30303 states and 45789 transitions. [2021-11-06 16:35:16,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-06 16:35:16,200 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:35:16,200 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:35:16,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 16:35:16,200 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-06 16:35:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:35:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2064164500, now seen corresponding path program 1 times [2021-11-06 16:35:16,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:35:16,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639266837] [2021-11-06 16:35:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:35:16,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:35:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:35:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-06 16:35:16,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:35:16,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639266837] [2021-11-06 16:35:16,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639266837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:35:16,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:35:16,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 16:35:16,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143033673] [2021-11-06 16:35:16,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:35:16,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:35:16,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:35:16,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:35:16,331 INFO L87 Difference]: Start difference. First operand 30303 states and 45789 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:35:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:35:27,391 INFO L93 Difference]: Finished difference Result 135869 states and 205357 transitions. [2021-11-06 16:35:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 16:35:27,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 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 181 [2021-11-06 16:35:27,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:35:27,611 INFO L225 Difference]: With dead ends: 135869 [2021-11-06 16:35:27,611 INFO L226 Difference]: Without dead ends: 135853 [2021-11-06 16:35:27,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 16:35:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135853 states.