./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD --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 32bit --witnessprinter.graph.data.programhash dd9f812dd0592e9d2894b2831060b27794691dcfdafe5c5494c28350656b71ee .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:54:47,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:54:47,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:54:47,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:54:47,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:54:47,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:54:47,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:54:47,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:54:47,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:54:47,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:54:47,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:54:47,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:54:47,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:54:47,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:54:47,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:54:47,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:54:47,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:54:47,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:54:47,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:54:47,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:54:47,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:54:47,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:54:47,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:54:47,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:54:47,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:54:47,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:54:47,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:54:47,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:54:47,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:54:47,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:54:47,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:54:47,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:54:47,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:54:47,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:54:47,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:54:47,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:54:47,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:54:47,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:54:47,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:54:47,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:54:47,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:54:47,232 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 22:54:47,280 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:54:47,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:54:47,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:54:47,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:54:47,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:54:47,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:54:47,291 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:54:47,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:54:47,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:54:47,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:54:47,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:54:47,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:54:47,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:54:47,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:54:47,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:54:47,294 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:54:47,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:54:47,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:54:47,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:54:47,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:54:47,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:54:47,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:54:47,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:54:47,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:54:47,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:54:47,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:54:47,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:54:47,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:54:47,298 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:54:47,299 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:54:47,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:54:47,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:54:47,300 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd9f812dd0592e9d2894b2831060b27794691dcfdafe5c5494c28350656b71ee [2021-10-28 22:54:47,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:54:47,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:54:47,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:54:47,645 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:54:47,646 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:54:47,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/forester-heap/dll-01-1.i [2021-10-28 22:54:47,741 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/data/861e09a4d/583b03ae3cf44732b4a424a3ed7993f9/FLAG3feed775f [2021-10-28 22:54:48,374 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:54:48,375 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i [2021-10-28 22:54:48,402 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/data/861e09a4d/583b03ae3cf44732b4a424a3ed7993f9/FLAG3feed775f [2021-10-28 22:54:48,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/data/861e09a4d/583b03ae3cf44732b4a424a3ed7993f9 [2021-10-28 22:54:48,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:54:48,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:54:48,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:48,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:54:48,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:54:48,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:48" (1/1) ... [2021-10-28 22:54:48,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3996487f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:48, skipping insertion in model container [2021-10-28 22:54:48,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:54:48" (1/1) ... [2021-10-28 22:54:48,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:54:48,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:54:49,069 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[22080,22093] [2021-10-28 22:54:49,078 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[22353,22366] [2021-10-28 22:54:49,081 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[22587,22600] [2021-10-28 22:54:49,083 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[22657,22670] [2021-10-28 22:54:49,086 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[22924,22937] [2021-10-28 22:54:49,088 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23032,23045] [2021-10-28 22:54:49,091 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23263,23276] [2021-10-28 22:54:49,093 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23343,23356] [2021-10-28 22:54:49,094 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23422,23435] [2021-10-28 22:54:49,095 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23512,23525] [2021-10-28 22:54:49,098 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23690,23703] [2021-10-28 22:54:49,099 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23768,23781] [2021-10-28 22:54:49,100 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23845,23858] [2021-10-28 22:54:49,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:49,114 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:54:49,150 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[22080,22093] [2021-10-28 22:54:49,156 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[22353,22366] [2021-10-28 22:54:49,167 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[22587,22600] [2021-10-28 22:54:49,168 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[22657,22670] [2021-10-28 22:54:49,171 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[22924,22937] [2021-10-28 22:54:49,172 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23032,23045] [2021-10-28 22:54:49,173 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23263,23276] [2021-10-28 22:54:49,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23343,23356] [2021-10-28 22:54:49,175 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23422,23435] [2021-10-28 22:54:49,177 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23512,23525] [2021-10-28 22:54:49,178 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23690,23703] [2021-10-28 22:54:49,179 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23768,23781] [2021-10-28 22:54:49,180 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/sv-benchmarks/c/forester-heap/dll-01-1.i[23845,23858] [2021-10-28 22:54:49,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:54:49,215 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:54:49,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49 WrapperNode [2021-10-28 22:54:49,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:54:49,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:54:49,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:54:49,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:54:49,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:54:49,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:54:49,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:54:49,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:54:49,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:54:49,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:54:49,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:54:49,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:54:49,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (1/1) ... [2021-10-28 22:54:49,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:54:49,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:54:49,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:54:49,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:54:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 22:54:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 22:54:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:54:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 22:54:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:54:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:54:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:54:49,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:54:50,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:54:50,080 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-28 22:54:50,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:50 BoogieIcfgContainer [2021-10-28 22:54:50,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:54:50,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:54:50,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:54:50,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:54:50,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:54:48" (1/3) ... [2021-10-28 22:54:50,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e42fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:50, skipping insertion in model container [2021-10-28 22:54:50,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:49" (2/3) ... [2021-10-28 22:54:50,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e42fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:50, skipping insertion in model container [2021-10-28 22:54:50,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:50" (3/3) ... [2021-10-28 22:54:50,096 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2021-10-28 22:54:50,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:54:50,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-10-28 22:54:50,178 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:54:50,187 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 [2021-10-28 22:54:50,187 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-28 22:54:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:50,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-28 22:54:50,218 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:50,219 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-28 22:54:50,220 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:50,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:50,227 INFO L85 PathProgramCache]: Analyzing trace with hash 925700, now seen corresponding path program 1 times [2021-10-28 22:54:50,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:50,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416026031] [2021-10-28 22:54:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:50,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:50,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:50,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416026031] [2021-10-28 22:54:50,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416026031] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:50,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:50,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:54:50,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777857942] [2021-10-28 22:54:50,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:54:50,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:50,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:54:50,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:54:50,540 INFO L87 Difference]: Start difference. First operand has 83 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:50,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:50,609 INFO L93 Difference]: Finished difference Result 180 states and 296 transitions. [2021-10-28 22:54:50,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:54:50,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-10-28 22:54:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:50,622 INFO L225 Difference]: With dead ends: 180 [2021-10-28 22:54:50,622 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 22:54:50,625 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 [2021-10-28 22:54:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 22:54:50,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2021-10-28 22:54:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.323076923076923) internal successors, (86), 76 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2021-10-28 22:54:50,669 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 4 [2021-10-28 22:54:50,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:50,669 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2021-10-28 22:54:50,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:50,670 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2021-10-28 22:54:50,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 22:54:50,671 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:50,671 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:50,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:54:50,672 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:50,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:50,673 INFO L85 PathProgramCache]: Analyzing trace with hash 261454926, now seen corresponding path program 1 times [2021-10-28 22:54:50,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:50,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16883483] [2021-10-28 22:54:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:50,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:50,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:50,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16883483] [2021-10-28 22:54:50,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16883483] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:50,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:50,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:54:50,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914166026] [2021-10-28 22:54:50,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:54:50,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:54:50,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:54:50,727 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:50,747 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-10-28 22:54:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:54:50,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-10-28 22:54:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:50,750 INFO L225 Difference]: With dead ends: 80 [2021-10-28 22:54:50,750 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 22:54:50,751 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 [2021-10-28 22:54:50,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 22:54:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-28 22:54:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 77 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) [2021-10-28 22:54:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-10-28 22:54:50,762 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 10 [2021-10-28 22:54:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:50,762 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-10-28 22:54:50,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:50,763 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-10-28 22:54:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 22:54:50,764 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:50,764 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:50,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 22:54:50,765 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:50,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:50,765 INFO L85 PathProgramCache]: Analyzing trace with hash 261456848, now seen corresponding path program 1 times [2021-10-28 22:54:50,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:50,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166909713] [2021-10-28 22:54:50,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:50,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:50,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:50,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166909713] [2021-10-28 22:54:50,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166909713] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:50,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:50,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:54:50,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204637406] [2021-10-28 22:54:50,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:54:50,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:50,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:54:50,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:54:50,861 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:50,942 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-10-28 22:54:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:54:50,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-10-28 22:54:50,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:50,944 INFO L225 Difference]: With dead ends: 79 [2021-10-28 22:54:50,945 INFO L226 Difference]: Without dead ends: 77 [2021-10-28 22:54:50,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:54:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-28 22:54:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-10-28 22:54:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 64 states have (on average 1.3125) internal successors, (84), 74 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:50,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2021-10-28 22:54:50,954 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 10 [2021-10-28 22:54:50,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:50,955 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2021-10-28 22:54:50,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:50,956 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2021-10-28 22:54:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 22:54:50,956 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:50,957 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:50,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 22:54:50,957 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:50,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:50,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1712619113, now seen corresponding path program 1 times [2021-10-28 22:54:50,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:50,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388510936] [2021-10-28 22:54:50,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:50,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:51,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:51,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388510936] [2021-10-28 22:54:51,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388510936] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:51,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:51,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:54:51,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976980510] [2021-10-28 22:54:51,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:54:51,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:51,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:54:51,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:54:51,049 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:51,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:51,225 INFO L93 Difference]: Finished difference Result 195 states and 217 transitions. [2021-10-28 22:54:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:54:51,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-28 22:54:51,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:51,231 INFO L225 Difference]: With dead ends: 195 [2021-10-28 22:54:51,231 INFO L226 Difference]: Without dead ends: 128 [2021-10-28 22:54:51,233 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:54:51,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-28 22:54:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 77. [2021-10-28 22:54:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 66 states have (on average 1.303030303030303) internal successors, (86), 76 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2021-10-28 22:54:51,262 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 15 [2021-10-28 22:54:51,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:51,263 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2021-10-28 22:54:51,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:51,264 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2021-10-28 22:54:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 22:54:51,265 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:51,265 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:51,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 22:54:51,265 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:51,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:51,268 INFO L85 PathProgramCache]: Analyzing trace with hash 903272487, now seen corresponding path program 1 times [2021-10-28 22:54:51,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:51,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392693624] [2021-10-28 22:54:51,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:51,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:51,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:51,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392693624] [2021-10-28 22:54:51,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392693624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:51,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:51,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:54:51,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402188813] [2021-10-28 22:54:51,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:54:51,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:51,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:54:51,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:54:51,445 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:51,610 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2021-10-28 22:54:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:54:51,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-28 22:54:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:51,612 INFO L225 Difference]: With dead ends: 122 [2021-10-28 22:54:51,613 INFO L226 Difference]: Without dead ends: 118 [2021-10-28 22:54:51,614 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:54:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-28 22:54:51,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 73. [2021-10-28 22:54:51,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.28125) internal successors, (82), 72 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2021-10-28 22:54:51,634 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 15 [2021-10-28 22:54:51,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:51,635 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2021-10-28 22:54:51,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:51,636 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2021-10-28 22:54:51,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 22:54:51,643 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:51,644 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:51,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 22:54:51,645 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:51,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:51,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2063319775, now seen corresponding path program 1 times [2021-10-28 22:54:51,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:51,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675863306] [2021-10-28 22:54:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:51,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:51,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:51,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675863306] [2021-10-28 22:54:51,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675863306] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:51,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:51,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:54:51,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829775622] [2021-10-28 22:54:51,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:54:51,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:51,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:54:51,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:54:51,727 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:51,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:51,828 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2021-10-28 22:54:51,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:54:51,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-28 22:54:51,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:51,830 INFO L225 Difference]: With dead ends: 132 [2021-10-28 22:54:51,830 INFO L226 Difference]: Without dead ends: 112 [2021-10-28 22:54:51,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:54:51,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-28 22:54:51,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 72. [2021-10-28 22:54:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 1.265625) internal successors, (81), 71 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2021-10-28 22:54:51,847 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 16 [2021-10-28 22:54:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:51,847 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2021-10-28 22:54:51,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2021-10-28 22:54:51,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 22:54:51,853 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:51,853 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:51,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 22:54:51,854 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:51,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:51,854 INFO L85 PathProgramCache]: Analyzing trace with hash -940628212, now seen corresponding path program 1 times [2021-10-28 22:54:51,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:51,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513735117] [2021-10-28 22:54:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:51,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:51,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:51,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513735117] [2021-10-28 22:54:51,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513735117] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:51,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:51,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:54:51,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566573714] [2021-10-28 22:54:51,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:54:51,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:51,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:54:51,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:54:51,939 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:51,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:51,961 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2021-10-28 22:54:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:54:51,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 22:54:51,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:51,963 INFO L225 Difference]: With dead ends: 137 [2021-10-28 22:54:51,963 INFO L226 Difference]: Without dead ends: 96 [2021-10-28 22:54:51,964 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 [2021-10-28 22:54:51,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-28 22:54:51,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2021-10-28 22:54:51,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 74 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2021-10-28 22:54:51,980 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2021-10-28 22:54:51,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:51,980 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2021-10-28 22:54:51,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:51,981 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2021-10-28 22:54:51,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 22:54:51,982 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:51,982 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:51,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 22:54:51,983 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:51,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:51,983 INFO L85 PathProgramCache]: Analyzing trace with hash 905291998, now seen corresponding path program 1 times [2021-10-28 22:54:51,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:51,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188851450] [2021-10-28 22:54:51,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:51,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:52,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:52,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188851450] [2021-10-28 22:54:52,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188851450] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:52,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:52,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:54:52,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983623975] [2021-10-28 22:54:52,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:54:52,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:52,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:54:52,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:54:52,052 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:52,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:52,072 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2021-10-28 22:54:52,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:54:52,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-28 22:54:52,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:52,073 INFO L225 Difference]: With dead ends: 75 [2021-10-28 22:54:52,073 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 22:54:52,078 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 [2021-10-28 22:54:52,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 22:54:52,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-28 22:54:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-10-28 22:54:52,093 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 21 [2021-10-28 22:54:52,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:52,098 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-10-28 22:54:52,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-10-28 22:54:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 22:54:52,099 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:52,099 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] [2021-10-28 22:54:52,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 22:54:52,100 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:52,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:52,100 INFO L85 PathProgramCache]: Analyzing trace with hash 886650935, now seen corresponding path program 1 times [2021-10-28 22:54:52,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:52,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525816517] [2021-10-28 22:54:52,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:52,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:52,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:52,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525816517] [2021-10-28 22:54:52,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525816517] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:52,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:52,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:54:52,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836541253] [2021-10-28 22:54:52,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:54:52,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:52,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:54:52,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:54:52,212 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:52,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:52,308 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2021-10-28 22:54:52,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:54:52,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-28 22:54:52,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:52,310 INFO L225 Difference]: With dead ends: 74 [2021-10-28 22:54:52,310 INFO L226 Difference]: Without dead ends: 72 [2021-10-28 22:54:52,310 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:54:52,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-28 22:54:52,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-10-28 22:54:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 70 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:52,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2021-10-28 22:54:52,316 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 23 [2021-10-28 22:54:52,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:52,316 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2021-10-28 22:54:52,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2021-10-28 22:54:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 22:54:52,322 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:52,322 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] [2021-10-28 22:54:52,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 22:54:52,323 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:52,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:52,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1458355201, now seen corresponding path program 1 times [2021-10-28 22:54:52,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:52,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200897197] [2021-10-28 22:54:52,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:52,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:52,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:52,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200897197] [2021-10-28 22:54:52,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200897197] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:52,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:52,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:54:52,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679633773] [2021-10-28 22:54:52,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:54:52,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:52,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:54:52,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:54:52,470 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:52,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:52,712 INFO L93 Difference]: Finished difference Result 175 states and 199 transitions. [2021-10-28 22:54:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:54:52,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-28 22:54:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:52,731 INFO L225 Difference]: With dead ends: 175 [2021-10-28 22:54:52,732 INFO L226 Difference]: Without dead ends: 133 [2021-10-28 22:54:52,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:54:52,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-28 22:54:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 81. [2021-10-28 22:54:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 80 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2021-10-28 22:54:52,737 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 24 [2021-10-28 22:54:52,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:52,738 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2021-10-28 22:54:52,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2021-10-28 22:54:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 22:54:52,739 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:52,739 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] [2021-10-28 22:54:52,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 22:54:52,740 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:52,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:52,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1357759361, now seen corresponding path program 1 times [2021-10-28 22:54:52,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:52,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540746508] [2021-10-28 22:54:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:52,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:52,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:54:52,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:52,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540746508] [2021-10-28 22:54:52,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540746508] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:52,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:52,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 22:54:52,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83776289] [2021-10-28 22:54:52,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:54:52,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:52,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:54:52,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:54:52,943 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:53,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:53,448 INFO L93 Difference]: Finished difference Result 234 states and 259 transitions. [2021-10-28 22:54:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 22:54:53,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-28 22:54:53,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:53,452 INFO L225 Difference]: With dead ends: 234 [2021-10-28 22:54:53,452 INFO L226 Difference]: Without dead ends: 232 [2021-10-28 22:54:53,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:54:53,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-28 22:54:53,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 93. [2021-10-28 22:54:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 92 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-10-28 22:54:53,461 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 24 [2021-10-28 22:54:53,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:53,461 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-10-28 22:54:53,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:53,462 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-10-28 22:54:53,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 22:54:53,463 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:53,463 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] [2021-10-28 22:54:53,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 22:54:53,464 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:53,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash 680714775, now seen corresponding path program 1 times [2021-10-28 22:54:53,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:53,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050822609] [2021-10-28 22:54:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:53,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:54:53,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:53,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050822609] [2021-10-28 22:54:53,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050822609] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:53,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:53,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:54:53,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851459298] [2021-10-28 22:54:53,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:54:53,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:53,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:54:53,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:54:53,531 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:53,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:53,699 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2021-10-28 22:54:53,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:54:53,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-28 22:54:53,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:53,701 INFO L225 Difference]: With dead ends: 139 [2021-10-28 22:54:53,701 INFO L226 Difference]: Without dead ends: 121 [2021-10-28 22:54:53,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:54:53,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-28 22:54:53,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 113. [2021-10-28 22:54:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 107 states have (on average 1.2429906542056075) internal successors, (133), 112 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2021-10-28 22:54:53,708 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 26 [2021-10-28 22:54:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:53,709 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2021-10-28 22:54:53,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2021-10-28 22:54:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 22:54:53,712 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:53,712 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] [2021-10-28 22:54:53,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 22:54:53,713 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:53,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:53,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1502606953, now seen corresponding path program 1 times [2021-10-28 22:54:53,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:53,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829473553] [2021-10-28 22:54:53,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:53,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:54:53,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:54:53,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829473553] [2021-10-28 22:54:53,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829473553] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:54:53,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:54:53,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:54:53,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927899645] [2021-10-28 22:54:53,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:54:53,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:54:53,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:54:53,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:54:53,762 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:53,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:53,817 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2021-10-28 22:54:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:54:53,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-28 22:54:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:53,819 INFO L225 Difference]: With dead ends: 113 [2021-10-28 22:54:53,820 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 22:54:53,820 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 [2021-10-28 22:54:53,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 22:54:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-28 22:54:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 110 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2021-10-28 22:54:53,828 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 26 [2021-10-28 22:54:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:53,829 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2021-10-28 22:54:53,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:54:53,829 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2021-10-28 22:54:53,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 22:54:53,830 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:53,830 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] [2021-10-28 22:54:53,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 22:54:53,831 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 22:54:53,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash -988757936, now seen corresponding path program 1 times [2021-10-28 22:54:53,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:54:53,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888122090] [2021-10-28 22:54:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:53,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:54:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:54:53,863 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:54:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:54:53,904 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:54:53,904 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 22:54:53,905 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:54:53,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 22:54:53,914 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:54:53,918 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:54:53,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:54:53 BoogieIcfgContainer [2021-10-28 22:54:53,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:54:53,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:54:53,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:54:53,953 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:54:53,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:50" (3/4) ... [2021-10-28 22:54:53,955 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 22:54:54,009 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:54:54,009 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:54:54,011 INFO L168 Benchmark]: Toolchain (without parser) took 5374.36 ms. Allocated memory was 96.5 MB in the beginning and 144.7 MB in the end (delta: 48.2 MB). Free memory was 62.8 MB in the beginning and 107.0 MB in the end (delta: -44.2 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:54,011 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 96.5 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:54,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.16 ms. Allocated memory was 96.5 MB in the beginning and 144.7 MB in the end (delta: 48.2 MB). Free memory was 62.4 MB in the beginning and 111.9 MB in the end (delta: -49.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:54,013 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.31 ms. Allocated memory is still 144.7 MB. Free memory was 111.9 MB in the beginning and 109.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:54,013 INFO L168 Benchmark]: Boogie Preprocessor took 57.28 ms. Allocated memory is still 144.7 MB. Free memory was 109.3 MB in the beginning and 107.3 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:54,013 INFO L168 Benchmark]: RCFGBuilder took 737.75 ms. Allocated memory is still 144.7 MB. Free memory was 107.3 MB in the beginning and 86.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:54,014 INFO L168 Benchmark]: TraceAbstraction took 3867.73 ms. Allocated memory is still 144.7 MB. Free memory was 86.8 MB in the beginning and 109.1 MB in the end (delta: -22.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:54:54,014 INFO L168 Benchmark]: Witness Printer took 56.83 ms. Allocated memory is still 144.7 MB. Free memory was 109.1 MB in the beginning and 107.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:54:54,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 96.5 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 576.16 ms. Allocated memory was 96.5 MB in the beginning and 144.7 MB in the end (delta: 48.2 MB). Free memory was 62.4 MB in the beginning and 111.9 MB in the end (delta: -49.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.31 ms. Allocated memory is still 144.7 MB. Free memory was 111.9 MB in the beginning and 109.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.28 ms. Allocated memory is still 144.7 MB. Free memory was 109.3 MB in the beginning and 107.3 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 737.75 ms. Allocated memory is still 144.7 MB. Free memory was 107.3 MB in the beginning and 86.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3867.73 ms. Allocated memory is still 144.7 MB. Free memory was 86.8 MB in the beginning and 109.1 MB in the end (delta: -22.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 56.83 ms. Allocated memory is still 144.7 MB. Free memory was 109.1 MB in the beginning and 107.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1040]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1003] SLL* list = malloc(sizeof(SLL)); [L1004] list->next = ((void*)0) [L1005] list->prev = ((void*)0) [L1006] COND FALSE !(!(list != ((void*)0))) [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1006] list->inner = malloc(sizeof(SLL)) [L1006] EXPR list->inner [L1006] list->inner->next = ((void*)0) [L1006] EXPR list->inner [L1006] list->inner->inner = ((void*)0) [L1006] EXPR list->inner [L1006] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L1006] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1008] SLL* end = list; [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1022] end = ((void*)0) [L1023] end = list [L1026] COND FALSE !(!(((void*)0) != end)) [L1028] COND TRUE ((void*)0) != end [L1030] int len = 0; [L1031] EXPR end->inner [L1031] SLL* inner = end->inner; [L1032] COND TRUE ((void*)0) != inner [L1034] COND TRUE len == 0 [L1035] len = 1 [L1038] COND FALSE !(!(((void*)0) != inner)) [L1039] EXPR inner->inner [L1039] COND FALSE !(!(((void*)0) == inner->inner)) [L1040] EXPR inner->next [L1040] COND TRUE !(((void*)0) != inner->next) [L1040] reach_error() - UnprovableResult [Line: 1006]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1055]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1057]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 83 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 948 SDtfs, 961 SDslu, 1380 SDs, 0 SdLazy, 648 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=12, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 377 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 1501 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 22:54:54,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7637af7d-31d7-448d-a50e-6604773147e1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...