./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0 --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 d46cc80a8d21eeff79ba02488456fda09c76eb75ff8eedd6b93124365a06d1f9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:15:14,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:15:14,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:15:14,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:15:14,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:15:14,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:15:14,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:15:14,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:15:14,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:15:14,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:15:14,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:15:14,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:15:14,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:15:14,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:15:14,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:15:14,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:15:14,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:15:14,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:15:14,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:15:14,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:15:14,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:15:14,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:15:14,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:15:14,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:15:14,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:15:14,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:15:14,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:15:14,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:15:14,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:15:14,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:15:14,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:15:14,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:15:14,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:15:14,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:15:14,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:15:14,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:15:14,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:15:14,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:15:14,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:15:14,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:15:14,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:15:14,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:15:14,287 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:15:14,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:15:14,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:15:14,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:15:14,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:15:14,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:15:14,291 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:15:14,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:15:14,292 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:15:14,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:15:14,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:15:14,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:15:14,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:15:14,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:15:14,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:15:14,294 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:15:14,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:15:14,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:15:14,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:15:14,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:15:14,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:15:14,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:15:14,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:15:14,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:15:14,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:15:14,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:15:14,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:15:14,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:15:14,297 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:15:14,299 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:15:14,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:15:14,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:15:14,300 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_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d46cc80a8d21eeff79ba02488456fda09c76eb75ff8eedd6b93124365a06d1f9 [2021-11-22 15:15:14,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:15:14,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:15:14,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:15:14,707 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:15:14,708 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:15:14,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c [2021-11-22 15:15:14,776 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/data/c699c6125/e86ef3841b3f4662bedb5fedc0f75911/FLAG58e06da10 [2021-11-22 15:15:16,059 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:15:16,061 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c [2021-11-22 15:15:16,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/data/c699c6125/e86ef3841b3f4662bedb5fedc0f75911/FLAG58e06da10 [2021-11-22 15:15:16,182 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/data/c699c6125/e86ef3841b3f4662bedb5fedc0f75911 [2021-11-22 15:15:16,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:15:16,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:15:16,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:15:16,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:15:16,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:15:16,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:15:16" (1/1) ... [2021-11-22 15:15:16,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d3dc30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:16, skipping insertion in model container [2021-11-22 15:15:16,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:15:16" (1/1) ... [2021-11-22 15:15:16,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:15:16,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:15:19,169 WARN L230 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_58277345-4b2f-426b-a9fc-b2648a478415/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c[377612,377625] [2021-11-22 15:15:19,205 WARN L230 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_58277345-4b2f-426b-a9fc-b2648a478415/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c[383339,383352] [2021-11-22 15:15:19,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:15:19,566 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:15:20,956 WARN L230 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_58277345-4b2f-426b-a9fc-b2648a478415/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c[377612,377625] [2021-11-22 15:15:20,966 WARN L230 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_58277345-4b2f-426b-a9fc-b2648a478415/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c[383339,383352] [2021-11-22 15:15:20,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:15:21,088 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:15:21,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:21 WrapperNode [2021-11-22 15:15:21,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:15:21,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:15:21,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:15:21,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:15:21,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:21" (1/1) ... [2021-11-22 15:15:21,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:21" (1/1) ... [2021-11-22 15:15:22,068 INFO L137 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 63, calls inlined = 192, statements flattened = 15248 [2021-11-22 15:15:22,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:15:22,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:15:22,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:15:22,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:15:22,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:21" (1/1) ... [2021-11-22 15:15:22,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:21" (1/1) ... [2021-11-22 15:15:22,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:21" (1/1) ... [2021-11-22 15:15:22,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:21" (1/1) ... [2021-11-22 15:15:22,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:21" (1/1) ... [2021-11-22 15:15:22,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:21" (1/1) ... [2021-11-22 15:15:22,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:21" (1/1) ... [2021-11-22 15:15:22,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:15:22,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:15:22,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:15:22,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:15:22,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:21" (1/1) ... [2021-11-22 15:15:22,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:15:22,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:15:22,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:15:23,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58277345-4b2f-426b-a9fc-b2648a478415/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:15:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:15:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:15:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:15:23,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:15:23,371 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:15:23,373 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:15:33,646 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:15:33,704 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:15:33,704 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-22 15:15:33,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:15:33 BoogieIcfgContainer [2021-11-22 15:15:33,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:15:33,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:15:33,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:15:33,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:15:33,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:15:16" (1/3) ... [2021-11-22 15:15:33,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19673864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:15:33, skipping insertion in model container [2021-11-22 15:15:33,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:15:21" (2/3) ... [2021-11-22 15:15:33,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19673864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:15:33, skipping insertion in model container [2021-11-22 15:15:33,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:15:33" (3/3) ... [2021-11-22 15:15:33,732 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.09.cil-1.c [2021-11-22 15:15:33,749 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:15:33,749 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 15:15:33,856 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:15:33,868 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:15:33,868 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 15:15:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 3360 states, 3357 states have (on average 1.7453083109919572) internal successors, (5859), 3359 states have internal predecessors, (5859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:15:34,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:34,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:34,017 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:15:34,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1979206253, now seen corresponding path program 1 times [2021-11-22 15:15:34,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:34,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593072069] [2021-11-22 15:15:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:34,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:34,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:34,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593072069] [2021-11-22 15:15:34,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593072069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:34,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:34,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:15:34,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235587863] [2021-11-22 15:15:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:34,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:15:34,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:34,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:15:34,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:15:34,551 INFO L87 Difference]: Start difference. First operand has 3360 states, 3357 states have (on average 1.7453083109919572) internal successors, (5859), 3359 states have internal predecessors, (5859), 0 states have call successors, (0), 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 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:34,939 INFO L93 Difference]: Finished difference Result 6710 states and 11699 transitions. [2021-11-22 15:15:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:15:34,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-22 15:15:34,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:34,997 INFO L225 Difference]: With dead ends: 6710 [2021-11-22 15:15:34,997 INFO L226 Difference]: Without dead ends: 3293 [2021-11-22 15:15:35,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:15:35,021 INFO L933 BasicCegarLoop]: 5770 mSDtfsCounter, 1739 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 9792 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:35,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 9792 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:15:35,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2021-11-22 15:15:35,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3293. [2021-11-22 15:15:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3293 states, 3291 states have (on average 1.7326040717107263) internal successors, (5702), 3292 states have internal predecessors, (5702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 5702 transitions. [2021-11-22 15:15:35,246 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 5702 transitions. Word has length 132 [2021-11-22 15:15:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:35,247 INFO L470 AbstractCegarLoop]: Abstraction has 3293 states and 5702 transitions. [2021-11-22 15:15:35,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 5702 transitions. [2021-11-22 15:15:35,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:15:35,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:35,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:35,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:15:35,255 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:15:35,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:35,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1827713937, now seen corresponding path program 1 times [2021-11-22 15:15:35,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:35,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15164801] [2021-11-22 15:15:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:35,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:35,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:35,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15164801] [2021-11-22 15:15:35,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15164801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:35,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:35,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:15:35,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541103441] [2021-11-22 15:15:35,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:35,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:15:35,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:35,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:15:35,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:15:35,389 INFO L87 Difference]: Start difference. First operand 3293 states and 5702 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:35,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:35,732 INFO L93 Difference]: Finished difference Result 5422 states and 8855 transitions. [2021-11-22 15:15:35,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:15:35,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-22 15:15:35,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:35,764 INFO L225 Difference]: With dead ends: 5422 [2021-11-22 15:15:35,764 INFO L226 Difference]: Without dead ends: 4266 [2021-11-22 15:15:35,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:15:35,778 INFO L933 BasicCegarLoop]: 5696 mSDtfsCounter, 5578 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5578 SdHoareTripleChecker+Valid, 7227 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:35,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5578 Valid, 7227 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:15:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2021-11-22 15:15:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 4264. [2021-11-22 15:15:35,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6733927733458471) internal successors, (7132), 4263 states have internal predecessors, (7132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:35,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7132 transitions. [2021-11-22 15:15:35,998 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7132 transitions. Word has length 132 [2021-11-22 15:15:35,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:35,998 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7132 transitions. [2021-11-22 15:15:35,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7132 transitions. [2021-11-22 15:15:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:15:36,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:36,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:36,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:15:36,004 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:15:36,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:36,007 INFO L85 PathProgramCache]: Analyzing trace with hash 651065297, now seen corresponding path program 1 times [2021-11-22 15:15:36,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:36,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915479041] [2021-11-22 15:15:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:36,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:36,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:36,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915479041] [2021-11-22 15:15:36,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915479041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:36,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:36,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:15:36,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125246355] [2021-11-22 15:15:36,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:36,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:15:36,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:36,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:15:36,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:15:36,155 INFO L87 Difference]: Start difference. First operand 4264 states and 7132 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:36,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:36,346 INFO L93 Difference]: Finished difference Result 6389 states and 10277 transitions. [2021-11-22 15:15:36,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:15:36,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-22 15:15:36,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:36,378 INFO L225 Difference]: With dead ends: 6389 [2021-11-22 15:15:36,379 INFO L226 Difference]: Without dead ends: 4264 [2021-11-22 15:15:36,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:15:36,394 INFO L933 BasicCegarLoop]: 5690 mSDtfsCounter, 5677 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5677 SdHoareTripleChecker+Valid, 5690 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:36,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5677 Valid, 5690 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:15:36,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2021-11-22 15:15:36,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2021-11-22 15:15:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6715157203190991) internal successors, (7124), 4263 states have internal predecessors, (7124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7124 transitions. [2021-11-22 15:15:36,593 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7124 transitions. Word has length 132 [2021-11-22 15:15:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:36,594 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7124 transitions. [2021-11-22 15:15:36,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:36,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7124 transitions. [2021-11-22 15:15:36,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:15:36,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:36,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:36,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:15:36,602 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:15:36,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1714402287, now seen corresponding path program 1 times [2021-11-22 15:15:36,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:36,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525436576] [2021-11-22 15:15:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:36,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:36,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:36,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:36,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525436576] [2021-11-22 15:15:36,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525436576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:36,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:36,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:15:36,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415680747] [2021-11-22 15:15:36,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:36,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:15:36,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:36,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:15:36,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:15:36,715 INFO L87 Difference]: Start difference. First operand 4264 states and 7124 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:37,073 INFO L93 Difference]: Finished difference Result 8425 states and 13263 transitions. [2021-11-22 15:15:37,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:15:37,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-22 15:15:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:37,123 INFO L225 Difference]: With dead ends: 8425 [2021-11-22 15:15:37,123 INFO L226 Difference]: Without dead ends: 6299 [2021-11-22 15:15:37,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:37,139 INFO L933 BasicCegarLoop]: 7237 mSDtfsCounter, 11355 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11355 SdHoareTripleChecker+Valid, 8794 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:37,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11355 Valid, 8794 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:15:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6299 states. [2021-11-22 15:15:37,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6299 to 6297. [2021-11-22 15:15:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6297 states, 6295 states have (on average 1.6068308181096107) internal successors, (10115), 6296 states have internal predecessors, (10115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:37,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6297 states to 6297 states and 10115 transitions. [2021-11-22 15:15:37,587 INFO L78 Accepts]: Start accepts. Automaton has 6297 states and 10115 transitions. Word has length 132 [2021-11-22 15:15:37,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:37,587 INFO L470 AbstractCegarLoop]: Abstraction has 6297 states and 10115 transitions. [2021-11-22 15:15:37,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 6297 states and 10115 transitions. [2021-11-22 15:15:37,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:15:37,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:37,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:37,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:15:37,593 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:15:37,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:37,597 INFO L85 PathProgramCache]: Analyzing trace with hash 12742675, now seen corresponding path program 1 times [2021-11-22 15:15:37,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:37,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810848169] [2021-11-22 15:15:37,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:37,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:37,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:37,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810848169] [2021-11-22 15:15:37,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810848169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:37,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:37,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:15:37,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221382131] [2021-11-22 15:15:37,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:37,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:15:37,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:37,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:15:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:15:37,709 INFO L87 Difference]: Start difference. First operand 6297 states and 10115 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:38,197 INFO L93 Difference]: Finished difference Result 14516 states and 22227 transitions. [2021-11-22 15:15:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:15:38,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-22 15:15:38,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:38,275 INFO L225 Difference]: With dead ends: 14516 [2021-11-22 15:15:38,275 INFO L226 Difference]: Without dead ends: 10360 [2021-11-22 15:15:38,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:38,287 INFO L933 BasicCegarLoop]: 7232 mSDtfsCounter, 11352 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11352 SdHoareTripleChecker+Valid, 8788 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:38,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11352 Valid, 8788 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:15:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10360 states. [2021-11-22 15:15:38,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10360 to 10358. [2021-11-22 15:15:38,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10358 states, 10356 states have (on average 1.5534955581305523) internal successors, (16088), 10357 states have internal predecessors, (16088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10358 states to 10358 states and 16088 transitions. [2021-11-22 15:15:38,907 INFO L78 Accepts]: Start accepts. Automaton has 10358 states and 16088 transitions. Word has length 132 [2021-11-22 15:15:38,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:38,909 INFO L470 AbstractCegarLoop]: Abstraction has 10358 states and 16088 transitions. [2021-11-22 15:15:38,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 10358 states and 16088 transitions. [2021-11-22 15:15:38,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:15:38,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:38,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:38,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:15:38,918 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:15:38,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash 484099025, now seen corresponding path program 1 times [2021-11-22 15:15:38,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:38,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284020708] [2021-11-22 15:15:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:38,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:39,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:39,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284020708] [2021-11-22 15:15:39,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284020708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:39,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:39,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:15:39,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039711425] [2021-11-22 15:15:39,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:39,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:15:39,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:39,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:15:39,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:15:39,020 INFO L87 Difference]: Start difference. First operand 10358 states and 16088 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:39,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:39,874 INFO L93 Difference]: Finished difference Result 26693 states and 40136 transitions. [2021-11-22 15:15:39,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:15:39,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-22 15:15:39,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:39,932 INFO L225 Difference]: With dead ends: 26693 [2021-11-22 15:15:39,932 INFO L226 Difference]: Without dead ends: 18477 [2021-11-22 15:15:39,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:39,956 INFO L933 BasicCegarLoop]: 7227 mSDtfsCounter, 11349 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11349 SdHoareTripleChecker+Valid, 8782 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:39,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11349 Valid, 8782 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:15:39,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18477 states. [2021-11-22 15:15:40,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18477 to 18475. [2021-11-22 15:15:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18475 states, 18473 states have (on average 1.516645915660694) internal successors, (28017), 18474 states have internal predecessors, (28017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18475 states to 18475 states and 28017 transitions. [2021-11-22 15:15:40,871 INFO L78 Accepts]: Start accepts. Automaton has 18475 states and 28017 transitions. Word has length 132 [2021-11-22 15:15:40,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:40,871 INFO L470 AbstractCegarLoop]: Abstraction has 18475 states and 28017 transitions. [2021-11-22 15:15:40,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:40,872 INFO L276 IsEmpty]: Start isEmpty. Operand 18475 states and 28017 transitions. [2021-11-22 15:15:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:15:40,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:40,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:40,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:15:40,876 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:15:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1163263917, now seen corresponding path program 1 times [2021-11-22 15:15:40,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:40,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158972521] [2021-11-22 15:15:40,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:40,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:40,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:40,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158972521] [2021-11-22 15:15:40,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158972521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:40,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:40,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:15:40,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306093601] [2021-11-22 15:15:40,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:40,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:15:40,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:40,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:15:40,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:15:40,932 INFO L87 Difference]: Start difference. First operand 18475 states and 28017 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:42,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:42,440 INFO L93 Difference]: Finished difference Result 51034 states and 75905 transitions. [2021-11-22 15:15:42,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:15:42,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-22 15:15:42,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:42,543 INFO L225 Difference]: With dead ends: 51034 [2021-11-22 15:15:42,544 INFO L226 Difference]: Without dead ends: 34702 [2021-11-22 15:15:42,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:42,580 INFO L933 BasicCegarLoop]: 7222 mSDtfsCounter, 11346 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11346 SdHoareTripleChecker+Valid, 8776 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:42,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11346 Valid, 8776 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:15:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34702 states. [2021-11-22 15:15:43,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34702 to 34700. [2021-11-22 15:15:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34700 states, 34698 states have (on average 1.4940918784944377) internal successors, (51842), 34699 states have internal predecessors, (51842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34700 states to 34700 states and 51842 transitions. [2021-11-22 15:15:44,048 INFO L78 Accepts]: Start accepts. Automaton has 34700 states and 51842 transitions. Word has length 132 [2021-11-22 15:15:44,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:44,050 INFO L470 AbstractCegarLoop]: Abstraction has 34700 states and 51842 transitions. [2021-11-22 15:15:44,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:44,050 INFO L276 IsEmpty]: Start isEmpty. Operand 34700 states and 51842 transitions. [2021-11-22 15:15:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:15:44,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:44,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:44,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:15:44,056 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:15:44,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:44,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1000352657, now seen corresponding path program 1 times [2021-11-22 15:15:44,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:44,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272704186] [2021-11-22 15:15:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:44,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:44,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:44,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272704186] [2021-11-22 15:15:44,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272704186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:44,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:44,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:15:44,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600158752] [2021-11-22 15:15:44,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:44,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:15:44,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:44,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:15:44,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:15:44,125 INFO L87 Difference]: Start difference. First operand 34700 states and 51842 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:45,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:45,321 INFO L93 Difference]: Finished difference Result 67256 states and 99693 transitions. [2021-11-22 15:15:45,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:15:45,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-22 15:15:45,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:45,417 INFO L225 Difference]: With dead ends: 67256 [2021-11-22 15:15:45,418 INFO L226 Difference]: Without dead ends: 34700 [2021-11-22 15:15:45,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:15:45,473 INFO L933 BasicCegarLoop]: 5676 mSDtfsCounter, 5658 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5658 SdHoareTripleChecker+Valid, 5676 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:45,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5658 Valid, 5676 Invalid, 9 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:15:45,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34700 states. [2021-11-22 15:15:46,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34700 to 34700. [2021-11-22 15:15:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34700 states, 34698 states have (on average 1.4908352066401522) internal successors, (51729), 34699 states have internal predecessors, (51729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34700 states to 34700 states and 51729 transitions. [2021-11-22 15:15:47,123 INFO L78 Accepts]: Start accepts. Automaton has 34700 states and 51729 transitions. Word has length 132 [2021-11-22 15:15:47,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:47,124 INFO L470 AbstractCegarLoop]: Abstraction has 34700 states and 51729 transitions. [2021-11-22 15:15:47,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 34700 states and 51729 transitions. [2021-11-22 15:15:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:15:47,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:47,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:47,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:15:47,132 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:15:47,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash -547705007, now seen corresponding path program 1 times [2021-11-22 15:15:47,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:47,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851720480] [2021-11-22 15:15:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:47,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:47,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:47,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851720480] [2021-11-22 15:15:47,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851720480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:47,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:47,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:15:47,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721216706] [2021-11-22 15:15:47,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:47,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:15:47,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:47,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:15:47,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:15:47,184 INFO L87 Difference]: Start difference. First operand 34700 states and 51729 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:49,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:49,602 INFO L93 Difference]: Finished difference Result 99675 states and 146992 transitions. [2021-11-22 15:15:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:15:49,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-22 15:15:49,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:49,872 INFO L225 Difference]: With dead ends: 99675 [2021-11-22 15:15:49,872 INFO L226 Difference]: Without dead ends: 67120 [2021-11-22 15:15:49,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:49,947 INFO L933 BasicCegarLoop]: 7207 mSDtfsCounter, 11333 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11333 SdHoareTripleChecker+Valid, 8756 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:49,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11333 Valid, 8756 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:15:50,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67120 states. [2021-11-22 15:15:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67120 to 67118. [2021-11-22 15:15:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67118 states, 67116 states have (on average 1.4778443292210501) internal successors, (99187), 67117 states have internal predecessors, (99187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67118 states to 67118 states and 99187 transitions. [2021-11-22 15:15:52,657 INFO L78 Accepts]: Start accepts. Automaton has 67118 states and 99187 transitions. Word has length 132 [2021-11-22 15:15:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:52,657 INFO L470 AbstractCegarLoop]: Abstraction has 67118 states and 99187 transitions. [2021-11-22 15:15:52,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 67118 states and 99187 transitions. [2021-11-22 15:15:52,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:15:52,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:52,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:52,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:15:52,678 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:15:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:52,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1774096911, now seen corresponding path program 1 times [2021-11-22 15:15:52,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:15:52,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038170105] [2021-11-22 15:15:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:52,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:15:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:52,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:15:52,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038170105] [2021-11-22 15:15:52,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038170105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:15:52,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:15:52,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:15:52,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644173072] [2021-11-22 15:15:52,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:15:52,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:15:52,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:15:52,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:15:52,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:15:52,749 INFO L87 Difference]: Start difference. First operand 67118 states and 99187 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:56,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:56,871 INFO L93 Difference]: Finished difference Result 192317 states and 282770 transitions. [2021-11-22 15:15:56,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:15:56,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-22 15:15:56,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:57,121 INFO L225 Difference]: With dead ends: 192317 [2021-11-22 15:15:57,122 INFO L226 Difference]: Without dead ends: 127346 [2021-11-22 15:15:57,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:15:57,238 INFO L933 BasicCegarLoop]: 7051 mSDtfsCounter, 11227 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11227 SdHoareTripleChecker+Valid, 8573 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:57,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11227 Valid, 8573 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:15:57,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127346 states. [2021-11-22 15:16:01,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127346 to 127280. [2021-11-22 15:16:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127280 states, 127278 states have (on average 1.4722261506309025) internal successors, (187382), 127279 states have internal predecessors, (187382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:16:02,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127280 states to 127280 states and 187382 transitions. [2021-11-22 15:16:02,295 INFO L78 Accepts]: Start accepts. Automaton has 127280 states and 187382 transitions. Word has length 132 [2021-11-22 15:16:02,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:16:02,296 INFO L470 AbstractCegarLoop]: Abstraction has 127280 states and 187382 transitions. [2021-11-22 15:16:02,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:16:02,296 INFO L276 IsEmpty]: Start isEmpty. Operand 127280 states and 187382 transitions. [2021-11-22 15:16:02,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 15:16:02,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:16:02,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:16:02,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:16:02,315 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:16:02,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:16:02,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1150815309, now seen corresponding path program 1 times [2021-11-22 15:16:02,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:16:02,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551852185] [2021-11-22 15:16:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:16:02,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:16:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:16:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:16:02,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:16:02,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551852185] [2021-11-22 15:16:02,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551852185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:16:02,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:16:02,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:16:02,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000727419] [2021-11-22 15:16:02,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:16:02,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:16:02,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:16:02,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:16:02,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:16:02,771 INFO L87 Difference]: Start difference. First operand 127280 states and 187382 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:16:10,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:16:10,760 INFO L93 Difference]: Finished difference Result 368063 states and 540629 transitions. [2021-11-22 15:16:10,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:16:10,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-22 15:16:10,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:16:11,212 INFO L225 Difference]: With dead ends: 368063 [2021-11-22 15:16:11,213 INFO L226 Difference]: Without dead ends: 242931 [2021-11-22 15:16:11,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:16:11,341 INFO L933 BasicCegarLoop]: 7045 mSDtfsCounter, 11223 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11223 SdHoareTripleChecker+Valid, 8566 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:16:11,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11223 Valid, 8566 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:16:11,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242931 states.