./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8 --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 5c011d5a0fba56387056dfb1e4fd33cceb66b52965c25e0a625e04747833af64 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:29:28,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:29:28,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:29:28,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:29:28,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:29:28,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:29:28,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:29:28,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:29:28,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:29:28,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:29:28,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:29:28,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:29:28,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:29:28,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:29:28,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:29:28,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:29:28,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:29:28,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:29:28,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:29:28,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:29:28,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:29:28,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:29:28,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:29:28,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:29:28,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:29:28,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:29:28,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:29:28,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:29:28,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:29:28,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:29:28,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:29:28,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:29:28,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:29:28,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:29:28,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:29:28,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:29:28,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:29:28,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:29:28,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:29:28,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:29:28,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:29:28,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:29:28,246 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:29:28,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:29:28,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:29:28,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:29:28,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:29:28,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:29:28,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:29:28,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:29:28,248 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:29:28,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:29:28,249 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:29:28,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:29:28,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:29:28,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:29:28,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:29:28,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:29:28,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:29:28,250 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:29:28,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:29:28,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:29:28,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:29:28,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:29:28,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:29:28,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:29:28,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:29:28,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:29:28,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:29:28,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:29:28,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:29:28,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:29:28,252 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:29:28,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:29:28,252 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:29:28,252 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:29:28,252 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:29:28,252 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c011d5a0fba56387056dfb1e4fd33cceb66b52965c25e0a625e04747833af64 [2022-12-13 19:29:28,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:29:28,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:29:28,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:29:28,432 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:29:28,432 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:29:28,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-12-13 19:29:30,936 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:29:31,099 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:29:31,100 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-12-13 19:29:31,106 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/data/aef369147/9e3a50902b8f4108848b81364621c87a/FLAGf1da2f6ff [2022-12-13 19:29:31,536 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/data/aef369147/9e3a50902b8f4108848b81364621c87a [2022-12-13 19:29:31,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:29:31,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:29:31,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:29:31,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:29:31,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:29:31,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a98c468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31, skipping insertion in model container [2022-12-13 19:29:31,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:29:31,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:29:31,761 WARN L237 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_aedf1456-533d-41a4-abb0-4352e0591b75/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7349,7362] [2022-12-13 19:29:31,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:29:31,800 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:29:31,837 WARN L237 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_aedf1456-533d-41a4-abb0-4352e0591b75/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7349,7362] [2022-12-13 19:29:31,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:29:31,872 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:29:31,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31 WrapperNode [2022-12-13 19:29:31,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:29:31,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:29:31,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:29:31,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:29:31,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,917 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 590 [2022-12-13 19:29:31,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:29:31,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:29:31,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:29:31,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:29:31,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,949 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:29:31,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:29:31,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:29:31,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:29:31,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31" (1/1) ... [2022-12-13 19:29:31,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:29:31,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:29:31,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:29:31,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aedf1456-533d-41a4-abb0-4352e0591b75/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:29:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:29:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:29:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:29:32,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:29:32,108 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:29:32,110 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:29:32,500 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:29:32,507 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:29:32,507 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:29:32,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:29:32 BoogieIcfgContainer [2022-12-13 19:29:32,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:29:32,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:29:32,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:29:32,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:29:32,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:29:31" (1/3) ... [2022-12-13 19:29:32,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d09ee68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:29:32, skipping insertion in model container [2022-12-13 19:29:32,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:31" (2/3) ... [2022-12-13 19:29:32,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d09ee68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:29:32, skipping insertion in model container [2022-12-13 19:29:32,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:29:32" (3/3) ... [2022-12-13 19:29:32,515 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-12-13 19:29:32,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:29:32,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 19:29:32,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:29:32,573 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5dea2997, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:29:32,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 19:29:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 138 states have (on average 1.7608695652173914) internal successors, (243), 145 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:32,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 19:29:32,584 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:32,584 INFO L195 NwaCegarLoop]: 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] [2022-12-13 19:29:32,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:32,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1890044597, now seen corresponding path program 1 times [2022-12-13 19:29:32,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:32,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307138507] [2022-12-13 19:29:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:32,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:29:32,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:32,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307138507] [2022-12-13 19:29:32,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307138507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:32,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:32,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:29:32,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950035107] [2022-12-13 19:29:32,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:32,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:29:32,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:32,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:29:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:29:32,884 INFO L87 Difference]: Start difference. First operand has 146 states, 138 states have (on average 1.7608695652173914) internal successors, (243), 145 states have internal predecessors, (243), 0 states have call successors, (0), 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 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:32,980 INFO L93 Difference]: Finished difference Result 319 states and 512 transitions. [2022-12-13 19:29:32,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:29:32,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-12-13 19:29:32,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:32,990 INFO L225 Difference]: With dead ends: 319 [2022-12-13 19:29:32,990 INFO L226 Difference]: Without dead ends: 210 [2022-12-13 19:29:32,992 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:29:32,995 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 138 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:32,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 418 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-12-13 19:29:33,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2022-12-13 19:29:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.529126213592233) internal successors, (315), 206 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 315 transitions. [2022-12-13 19:29:33,037 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 315 transitions. Word has length 56 [2022-12-13 19:29:33,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:33,037 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 315 transitions. [2022-12-13 19:29:33,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 315 transitions. [2022-12-13 19:29:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 19:29:33,039 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:33,039 INFO L195 NwaCegarLoop]: 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] [2022-12-13 19:29:33,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:29:33,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:33,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:33,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1610685192, now seen corresponding path program 1 times [2022-12-13 19:29:33,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:33,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802131294] [2022-12-13 19:29:33,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:33,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:29:33,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:33,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802131294] [2022-12-13 19:29:33,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802131294] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:33,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:33,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:29:33,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083712981] [2022-12-13 19:29:33,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:33,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:29:33,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:33,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:29:33,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:29:33,127 INFO L87 Difference]: Start difference. First operand 207 states and 315 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:33,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:33,179 INFO L93 Difference]: Finished difference Result 499 states and 775 transitions. [2022-12-13 19:29:33,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:29:33,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-12-13 19:29:33,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:33,181 INFO L225 Difference]: With dead ends: 499 [2022-12-13 19:29:33,181 INFO L226 Difference]: Without dead ends: 346 [2022-12-13 19:29:33,182 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:29:33,183 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 110 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:33,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 375 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:33,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-12-13 19:29:33,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 342. [2022-12-13 19:29:33,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.5395894428152492) internal successors, (525), 341 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 525 transitions. [2022-12-13 19:29:33,211 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 525 transitions. Word has length 58 [2022-12-13 19:29:33,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:33,211 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 525 transitions. [2022-12-13 19:29:33,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:33,212 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 525 transitions. [2022-12-13 19:29:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 19:29:33,213 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:33,213 INFO L195 NwaCegarLoop]: 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] [2022-12-13 19:29:33,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:29:33,213 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:33,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1017067947, now seen corresponding path program 1 times [2022-12-13 19:29:33,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:33,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137006430] [2022-12-13 19:29:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:33,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:29:33,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:33,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137006430] [2022-12-13 19:29:33,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137006430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:33,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:33,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:29:33,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102069596] [2022-12-13 19:29:33,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:33,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:29:33,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:33,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:29:33,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:29:33,281 INFO L87 Difference]: Start difference. First operand 342 states and 525 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:33,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:33,337 INFO L93 Difference]: Finished difference Result 890 states and 1379 transitions. [2022-12-13 19:29:33,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:29:33,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-12-13 19:29:33,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:33,340 INFO L225 Difference]: With dead ends: 890 [2022-12-13 19:29:33,340 INFO L226 Difference]: Without dead ends: 602 [2022-12-13 19:29:33,341 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:29:33,342 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 105 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:33,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 376 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-12-13 19:29:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 596. [2022-12-13 19:29:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 595 states have (on average 1.5344537815126051) internal successors, (913), 595 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 913 transitions. [2022-12-13 19:29:33,380 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 913 transitions. Word has length 60 [2022-12-13 19:29:33,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:33,381 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 913 transitions. [2022-12-13 19:29:33,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:33,381 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 913 transitions. [2022-12-13 19:29:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 19:29:33,382 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:33,382 INFO L195 NwaCegarLoop]: 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] [2022-12-13 19:29:33,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:29:33,383 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:33,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:33,383 INFO L85 PathProgramCache]: Analyzing trace with hash 291448600, now seen corresponding path program 1 times [2022-12-13 19:29:33,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:33,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289754703] [2022-12-13 19:29:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:33,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:29:33,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:33,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289754703] [2022-12-13 19:29:33,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289754703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:33,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:33,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:29:33,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858615954] [2022-12-13 19:29:33,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:33,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:29:33,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:33,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:29:33,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:29:33,460 INFO L87 Difference]: Start difference. First operand 596 states and 913 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:33,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:33,681 INFO L93 Difference]: Finished difference Result 2566 states and 4019 transitions. [2022-12-13 19:29:33,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:29:33,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-12-13 19:29:33,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:33,687 INFO L225 Difference]: With dead ends: 2566 [2022-12-13 19:29:33,687 INFO L226 Difference]: Without dead ends: 2014 [2022-12-13 19:29:33,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:29:33,689 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 802 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:33,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1271 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:29:33,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2022-12-13 19:29:33,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1049. [2022-12-13 19:29:33,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1048 states have (on average 1.5553435114503817) internal successors, (1630), 1048 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1630 transitions. [2022-12-13 19:29:33,777 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1630 transitions. Word has length 62 [2022-12-13 19:29:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:33,777 INFO L495 AbstractCegarLoop]: Abstraction has 1049 states and 1630 transitions. [2022-12-13 19:29:33,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1630 transitions. [2022-12-13 19:29:33,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 19:29:33,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:33,779 INFO L195 NwaCegarLoop]: 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] [2022-12-13 19:29:33,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:29:33,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:33,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:33,780 INFO L85 PathProgramCache]: Analyzing trace with hash 382467820, now seen corresponding path program 1 times [2022-12-13 19:29:33,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:33,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341973155] [2022-12-13 19:29:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:33,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:29:33,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:33,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341973155] [2022-12-13 19:29:33,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341973155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:33,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:33,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:29:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675962099] [2022-12-13 19:29:33,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:33,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:29:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:29:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:29:33,839 INFO L87 Difference]: Start difference. First operand 1049 states and 1630 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:34,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:34,012 INFO L93 Difference]: Finished difference Result 3058 states and 4802 transitions. [2022-12-13 19:29:34,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:29:34,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-12-13 19:29:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:34,020 INFO L225 Difference]: With dead ends: 3058 [2022-12-13 19:29:34,021 INFO L226 Difference]: Without dead ends: 2063 [2022-12-13 19:29:34,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:29:34,023 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 378 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:34,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 616 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:34,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2022-12-13 19:29:34,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1544. [2022-12-13 19:29:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 1.558651976668827) internal successors, (2405), 1543 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2405 transitions. [2022-12-13 19:29:34,195 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2405 transitions. Word has length 63 [2022-12-13 19:29:34,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:34,195 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2405 transitions. [2022-12-13 19:29:34,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2405 transitions. [2022-12-13 19:29:34,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 19:29:34,197 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:34,197 INFO L195 NwaCegarLoop]: 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] [2022-12-13 19:29:34,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:29:34,198 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:34,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:34,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1879078355, now seen corresponding path program 1 times [2022-12-13 19:29:34,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:34,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910678693] [2022-12-13 19:29:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:34,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:29:34,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:34,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910678693] [2022-12-13 19:29:34,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910678693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:34,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:34,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:29:34,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104899950] [2022-12-13 19:29:34,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:34,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:29:34,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:34,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:29:34,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:29:34,257 INFO L87 Difference]: Start difference. First operand 1544 states and 2405 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:34,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:34,460 INFO L93 Difference]: Finished difference Result 3020 states and 4724 transitions. [2022-12-13 19:29:34,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:29:34,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-12-13 19:29:34,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:34,468 INFO L225 Difference]: With dead ends: 3020 [2022-12-13 19:29:34,468 INFO L226 Difference]: Without dead ends: 2168 [2022-12-13 19:29:34,470 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:29:34,470 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 109 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:34,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 440 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:34,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2022-12-13 19:29:34,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2166. [2022-12-13 19:29:34,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 2165 states have (on average 1.5510392609699768) internal successors, (3358), 2165 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 3358 transitions. [2022-12-13 19:29:34,690 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 3358 transitions. Word has length 65 [2022-12-13 19:29:34,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:34,691 INFO L495 AbstractCegarLoop]: Abstraction has 2166 states and 3358 transitions. [2022-12-13 19:29:34,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:34,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 3358 transitions. [2022-12-13 19:29:34,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 19:29:34,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:34,693 INFO L195 NwaCegarLoop]: 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] [2022-12-13 19:29:34,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:29:34,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:34,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:34,694 INFO L85 PathProgramCache]: Analyzing trace with hash -450865020, now seen corresponding path program 1 times [2022-12-13 19:29:34,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:34,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314874333] [2022-12-13 19:29:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:34,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:29:34,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:34,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314874333] [2022-12-13 19:29:34,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314874333] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:34,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:34,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:29:34,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059166427] [2022-12-13 19:29:34,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:34,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:29:34,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:34,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:29:34,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:29:34,750 INFO L87 Difference]: Start difference. First operand 2166 states and 3358 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:34,949 INFO L93 Difference]: Finished difference Result 4182 states and 6510 transitions. [2022-12-13 19:29:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:29:34,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-12-13 19:29:34,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:34,955 INFO L225 Difference]: With dead ends: 4182 [2022-12-13 19:29:34,956 INFO L226 Difference]: Without dead ends: 3009 [2022-12-13 19:29:34,957 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:29:34,957 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 104 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:34,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 422 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:34,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2022-12-13 19:29:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 3007. [2022-12-13 19:29:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.541583499667332) internal successors, (4634), 3006 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4634 transitions. [2022-12-13 19:29:35,124 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4634 transitions. Word has length 65 [2022-12-13 19:29:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:35,124 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4634 transitions. [2022-12-13 19:29:35,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:35,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4634 transitions. [2022-12-13 19:29:35,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 19:29:35,125 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:35,125 INFO L195 NwaCegarLoop]: 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] [2022-12-13 19:29:35,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:29:35,125 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:35,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:35,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1768808302, now seen corresponding path program 1 times [2022-12-13 19:29:35,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:35,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550655210] [2022-12-13 19:29:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:35,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:29:35,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:35,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550655210] [2022-12-13 19:29:35,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550655210] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:35,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:35,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:29:35,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995500401] [2022-12-13 19:29:35,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:29:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:35,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:29:35,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:29:35,157 INFO L87 Difference]: Start difference. First operand 3007 states and 4634 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:35,465 INFO L93 Difference]: Finished difference Result 6429 states and 9939 transitions. [2022-12-13 19:29:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:29:35,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-12-13 19:29:35,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:35,475 INFO L225 Difference]: With dead ends: 6429 [2022-12-13 19:29:35,475 INFO L226 Difference]: Without dead ends: 4306 [2022-12-13 19:29:35,477 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:29:35,478 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 114 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:35,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 469 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2022-12-13 19:29:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 4304. [2022-12-13 19:29:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4303 states have (on average 1.5284685103416222) internal successors, (6577), 4303 states have internal predecessors, (6577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 6577 transitions. [2022-12-13 19:29:35,750 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 6577 transitions. Word has length 65 [2022-12-13 19:29:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:35,750 INFO L495 AbstractCegarLoop]: Abstraction has 4304 states and 6577 transitions. [2022-12-13 19:29:35,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:35,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 6577 transitions. [2022-12-13 19:29:35,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 19:29:35,751 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:35,751 INFO L195 NwaCegarLoop]: 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] [2022-12-13 19:29:35,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:29:35,751 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:35,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:35,752 INFO L85 PathProgramCache]: Analyzing trace with hash 762823713, now seen corresponding path program 1 times [2022-12-13 19:29:35,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:35,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238071797] [2022-12-13 19:29:35,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:35,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:29:35,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:35,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238071797] [2022-12-13 19:29:35,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238071797] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:35,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:35,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:29:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641615510] [2022-12-13 19:29:35,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:35,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:29:35,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:29:35,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:29:35,896 INFO L87 Difference]: Start difference. First operand 4304 states and 6577 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:36,532 INFO L93 Difference]: Finished difference Result 7209 states and 10936 transitions. [2022-12-13 19:29:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:29:36,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-12-13 19:29:36,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:36,548 INFO L225 Difference]: With dead ends: 7209 [2022-12-13 19:29:36,548 INFO L226 Difference]: Without dead ends: 7207 [2022-12-13 19:29:36,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:29:36,550 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 242 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:36,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 955 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:36,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7207 states. [2022-12-13 19:29:36,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7207 to 4408. [2022-12-13 19:29:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 4407 states have (on average 1.5098706603131382) internal successors, (6654), 4407 states have internal predecessors, (6654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:36,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 6654 transitions. [2022-12-13 19:29:36,894 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 6654 transitions. Word has length 71 [2022-12-13 19:29:36,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:36,894 INFO L495 AbstractCegarLoop]: Abstraction has 4408 states and 6654 transitions. [2022-12-13 19:29:36,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:36,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 6654 transitions. [2022-12-13 19:29:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 19:29:36,896 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:36,896 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:29:36,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:29:36,896 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1613729099, now seen corresponding path program 1 times [2022-12-13 19:29:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:36,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919986553] [2022-12-13 19:29:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:36,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:29:37,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:37,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919986553] [2022-12-13 19:29:37,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919986553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:37,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:37,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:29:37,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329144611] [2022-12-13 19:29:37,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:37,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:29:37,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:37,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:29:37,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:29:37,017 INFO L87 Difference]: Start difference. First operand 4408 states and 6654 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:37,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:37,957 INFO L93 Difference]: Finished difference Result 12774 states and 19353 transitions. [2022-12-13 19:29:37,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:29:37,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-12-13 19:29:37,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:37,977 INFO L225 Difference]: With dead ends: 12774 [2022-12-13 19:29:37,977 INFO L226 Difference]: Without dead ends: 9836 [2022-12-13 19:29:37,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:29:37,983 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 478 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:37,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 905 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:37,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9836 states. [2022-12-13 19:29:38,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9836 to 7093. [2022-12-13 19:29:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7093 states, 7092 states have (on average 1.508742244782854) internal successors, (10700), 7092 states have internal predecessors, (10700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:38,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 10700 transitions. [2022-12-13 19:29:38,532 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 10700 transitions. Word has length 93 [2022-12-13 19:29:38,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:38,532 INFO L495 AbstractCegarLoop]: Abstraction has 7093 states and 10700 transitions. [2022-12-13 19:29:38,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:38,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 10700 transitions. [2022-12-13 19:29:38,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 19:29:38,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:38,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:29:38,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:29:38,534 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:38,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash 351294822, now seen corresponding path program 1 times [2022-12-13 19:29:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:38,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912273699] [2022-12-13 19:29:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:38,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 19:29:38,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:38,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912273699] [2022-12-13 19:29:38,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912273699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:38,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:38,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:29:38,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777136124] [2022-12-13 19:29:38,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:38,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:29:38,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:38,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:29:38,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:29:38,610 INFO L87 Difference]: Start difference. First operand 7093 states and 10700 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:39,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:39,496 INFO L93 Difference]: Finished difference Result 14386 states and 21796 transitions. [2022-12-13 19:29:39,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:29:39,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-12-13 19:29:39,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:39,513 INFO L225 Difference]: With dead ends: 14386 [2022-12-13 19:29:39,514 INFO L226 Difference]: Without dead ends: 11448 [2022-12-13 19:29:39,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:29:39,518 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 484 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:39,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 901 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11448 states. [2022-12-13 19:29:40,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11448 to 10641. [2022-12-13 19:29:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10641 states, 10640 states have (on average 1.5084586466165413) internal successors, (16050), 10640 states have internal predecessors, (16050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:40,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10641 states to 10641 states and 16050 transitions. [2022-12-13 19:29:40,438 INFO L78 Accepts]: Start accepts. Automaton has 10641 states and 16050 transitions. Word has length 93 [2022-12-13 19:29:40,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:40,438 INFO L495 AbstractCegarLoop]: Abstraction has 10641 states and 16050 transitions. [2022-12-13 19:29:40,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:40,439 INFO L276 IsEmpty]: Start isEmpty. Operand 10641 states and 16050 transitions. [2022-12-13 19:29:40,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 19:29:40,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:40,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:29:40,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:29:40,440 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:40,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:40,440 INFO L85 PathProgramCache]: Analyzing trace with hash -966648460, now seen corresponding path program 1 times [2022-12-13 19:29:40,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:40,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811031570] [2022-12-13 19:29:40,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:40,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:29:40,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:40,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811031570] [2022-12-13 19:29:40,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811031570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:40,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:40,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:29:40,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182322023] [2022-12-13 19:29:40,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:40,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:29:40,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:40,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:29:40,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:29:40,482 INFO L87 Difference]: Start difference. First operand 10641 states and 16050 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:41,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:41,992 INFO L93 Difference]: Finished difference Result 21606 states and 32730 transitions. [2022-12-13 19:29:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:29:41,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-12-13 19:29:41,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:42,019 INFO L225 Difference]: With dead ends: 21606 [2022-12-13 19:29:42,019 INFO L226 Difference]: Without dead ends: 19762 [2022-12-13 19:29:42,024 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:29:42,025 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 95 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:42,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 377 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:42,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19762 states. [2022-12-13 19:29:43,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19762 to 19760. [2022-12-13 19:29:43,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19760 states, 19759 states have (on average 1.5110582519358267) internal successors, (29857), 19759 states have internal predecessors, (29857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19760 states to 19760 states and 29857 transitions. [2022-12-13 19:29:43,597 INFO L78 Accepts]: Start accepts. Automaton has 19760 states and 29857 transitions. Word has length 93 [2022-12-13 19:29:43,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:43,598 INFO L495 AbstractCegarLoop]: Abstraction has 19760 states and 29857 transitions. [2022-12-13 19:29:43,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand 19760 states and 29857 transitions. [2022-12-13 19:29:43,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 19:29:43,599 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:43,599 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:29:43,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:29:43,599 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:43,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash -447040382, now seen corresponding path program 1 times [2022-12-13 19:29:43,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:43,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855949164] [2022-12-13 19:29:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:43,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:29:43,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:43,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855949164] [2022-12-13 19:29:43,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855949164] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:43,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:43,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:29:43,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602371938] [2022-12-13 19:29:43,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:43,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:29:43,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:43,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:29:43,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:29:43,641 INFO L87 Difference]: Start difference. First operand 19760 states and 29857 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:46,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:46,956 INFO L93 Difference]: Finished difference Result 58037 states and 87620 transitions. [2022-12-13 19:29:46,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:29:46,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-12-13 19:29:46,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:47,003 INFO L225 Difference]: With dead ends: 58037 [2022-12-13 19:29:47,003 INFO L226 Difference]: Without dead ends: 38347 [2022-12-13 19:29:47,021 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:29:47,022 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 134 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:47,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 456 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:47,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38347 states. [2022-12-13 19:29:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38347 to 38345. [2022-12-13 19:29:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38345 states, 38344 states have (on average 1.4977832255372419) internal successors, (57431), 38344 states have internal predecessors, (57431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38345 states to 38345 states and 57431 transitions. [2022-12-13 19:29:50,451 INFO L78 Accepts]: Start accepts. Automaton has 38345 states and 57431 transitions. Word has length 94 [2022-12-13 19:29:50,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:29:50,451 INFO L495 AbstractCegarLoop]: Abstraction has 38345 states and 57431 transitions. [2022-12-13 19:29:50,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 38345 states and 57431 transitions. [2022-12-13 19:29:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 19:29:50,453 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:29:50,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:29:50,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:29:50,453 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:29:50,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:50,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1281710540, now seen corresponding path program 1 times [2022-12-13 19:29:50,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:50,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416829520] [2022-12-13 19:29:50,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:50,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:29:50,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:50,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416829520] [2022-12-13 19:29:50,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416829520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:50,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:50,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:29:50,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537880541] [2022-12-13 19:29:50,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:50,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:29:50,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:50,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:29:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:29:50,498 INFO L87 Difference]: Start difference. First operand 38345 states and 57431 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:29:57,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:29:57,335 INFO L93 Difference]: Finished difference Result 112589 states and 168464 transitions. [2022-12-13 19:29:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:29:57,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-12-13 19:29:57,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:29:57,439 INFO L225 Difference]: With dead ends: 112589 [2022-12-13 19:29:57,439 INFO L226 Difference]: Without dead ends: 74381 [2022-12-13 19:29:57,474 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:29:57,475 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 152 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:29:57,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 490 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:29:57,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74381 states. [2022-12-13 19:30:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74381 to 74379. [2022-12-13 19:30:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74379 states, 74378 states have (on average 1.4837855279787033) internal successors, (110361), 74378 states have internal predecessors, (110361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74379 states to 74379 states and 110361 transitions. [2022-12-13 19:30:04,526 INFO L78 Accepts]: Start accepts. Automaton has 74379 states and 110361 transitions. Word has length 94 [2022-12-13 19:30:04,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:30:04,526 INFO L495 AbstractCegarLoop]: Abstraction has 74379 states and 110361 transitions. [2022-12-13 19:30:04,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 74379 states and 110361 transitions. [2022-12-13 19:30:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 19:30:04,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:30:04,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:30:04,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:30:04,529 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:30:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:04,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1270260760, now seen corresponding path program 1 times [2022-12-13 19:30:04,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:04,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740696025] [2022-12-13 19:30:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:04,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:30:04,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:04,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740696025] [2022-12-13 19:30:04,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740696025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:04,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:04,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:30:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261720117] [2022-12-13 19:30:04,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:30:04,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:30:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:30:04,614 INFO L87 Difference]: Start difference. First operand 74379 states and 110361 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:30:11,908 INFO L93 Difference]: Finished difference Result 118521 states and 176580 transitions. [2022-12-13 19:30:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:30:11,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-12-13 19:30:11,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:30:12,019 INFO L225 Difference]: With dead ends: 118521 [2022-12-13 19:30:12,019 INFO L226 Difference]: Without dead ends: 79543 [2022-12-13 19:30:12,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:30:12,056 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 211 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:30:12,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 641 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:30:12,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79543 states. [2022-12-13 19:30:17,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79543 to 49555. [2022-12-13 19:30:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49555 states, 49554 states have (on average 1.4781652338862654) internal successors, (73249), 49554 states have internal predecessors, (73249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49555 states to 49555 states and 73249 transitions. [2022-12-13 19:30:17,685 INFO L78 Accepts]: Start accepts. Automaton has 49555 states and 73249 transitions. Word has length 94 [2022-12-13 19:30:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:30:17,685 INFO L495 AbstractCegarLoop]: Abstraction has 49555 states and 73249 transitions. [2022-12-13 19:30:17,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 49555 states and 73249 transitions. [2022-12-13 19:30:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 19:30:17,688 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:30:17,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:30:17,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:30:17,688 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:30:17,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash 393120711, now seen corresponding path program 1 times [2022-12-13 19:30:17,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:17,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353259616] [2022-12-13 19:30:17,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:17,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:30:17,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:17,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353259616] [2022-12-13 19:30:17,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353259616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:17,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:17,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:30:17,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067556058] [2022-12-13 19:30:17,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:17,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:30:17,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:17,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:30:17,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:30:17,763 INFO L87 Difference]: Start difference. First operand 49555 states and 73249 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:30:22,438 INFO L93 Difference]: Finished difference Result 93467 states and 138441 transitions. [2022-12-13 19:30:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:30:22,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-12-13 19:30:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:30:22,491 INFO L225 Difference]: With dead ends: 93467 [2022-12-13 19:30:22,492 INFO L226 Difference]: Without dead ends: 44173 [2022-12-13 19:30:22,521 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:30:22,522 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 88 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:30:22,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 427 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:30:22,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44173 states. [2022-12-13 19:30:27,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44173 to 44171. [2022-12-13 19:30:27,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44171 states, 44170 states have (on average 1.4727416798732171) internal successors, (65051), 44170 states have internal predecessors, (65051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44171 states to 44171 states and 65051 transitions. [2022-12-13 19:30:27,242 INFO L78 Accepts]: Start accepts. Automaton has 44171 states and 65051 transitions. Word has length 96 [2022-12-13 19:30:27,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:30:27,242 INFO L495 AbstractCegarLoop]: Abstraction has 44171 states and 65051 transitions. [2022-12-13 19:30:27,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:27,242 INFO L276 IsEmpty]: Start isEmpty. Operand 44171 states and 65051 transitions. [2022-12-13 19:30:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 19:30:27,244 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:30:27,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:30:27,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 19:30:27,245 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:30:27,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:27,245 INFO L85 PathProgramCache]: Analyzing trace with hash 895241058, now seen corresponding path program 1 times [2022-12-13 19:30:27,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:27,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734696783] [2022-12-13 19:30:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:27,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:30:27,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:27,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734696783] [2022-12-13 19:30:27,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734696783] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:27,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:27,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:30:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672440796] [2022-12-13 19:30:27,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:27,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:30:27,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:30:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:30:27,288 INFO L87 Difference]: Start difference. First operand 44171 states and 65051 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:32,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:30:32,157 INFO L93 Difference]: Finished difference Result 65555 states and 96200 transitions. [2022-12-13 19:30:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:30:32,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-12-13 19:30:32,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:30:32,210 INFO L225 Difference]: With dead ends: 65555 [2022-12-13 19:30:32,211 INFO L226 Difference]: Without dead ends: 44301 [2022-12-13 19:30:32,228 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:30:32,229 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 145 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:30:32,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 560 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:30:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44301 states. [2022-12-13 19:30:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44301 to 44299. [2022-12-13 19:30:37,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44299 states, 44298 states have (on average 1.460291661023071) internal successors, (64688), 44298 states have internal predecessors, (64688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:37,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44299 states to 44299 states and 64688 transitions. [2022-12-13 19:30:37,191 INFO L78 Accepts]: Start accepts. Automaton has 44299 states and 64688 transitions. Word has length 97 [2022-12-13 19:30:37,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:30:37,192 INFO L495 AbstractCegarLoop]: Abstraction has 44299 states and 64688 transitions. [2022-12-13 19:30:37,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 44299 states and 64688 transitions. [2022-12-13 19:30:37,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 19:30:37,194 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:30:37,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:30:37,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 19:30:37,194 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:30:37,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:37,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1222523626, now seen corresponding path program 1 times [2022-12-13 19:30:37,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:37,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439316717] [2022-12-13 19:30:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:37,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:30:37,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:37,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439316717] [2022-12-13 19:30:37,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439316717] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:37,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:37,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:30:37,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129349358] [2022-12-13 19:30:37,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:37,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:30:37,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:37,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:30:37,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:30:37,236 INFO L87 Difference]: Start difference. First operand 44299 states and 64688 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:41,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:30:41,634 INFO L93 Difference]: Finished difference Result 58990 states and 85869 transitions. [2022-12-13 19:30:41,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:30:41,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-12-13 19:30:41,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:30:41,680 INFO L225 Difference]: With dead ends: 58990 [2022-12-13 19:30:41,680 INFO L226 Difference]: Without dead ends: 37705 [2022-12-13 19:30:41,698 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:30:41,699 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 131 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:30:41,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 547 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:30:41,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37705 states. [2022-12-13 19:30:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37705 to 37703. [2022-12-13 19:30:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37703 states, 37702 states have (on average 1.447535939737945) internal successors, (54575), 37702 states have internal predecessors, (54575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:46,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37703 states to 37703 states and 54575 transitions. [2022-12-13 19:30:46,169 INFO L78 Accepts]: Start accepts. Automaton has 37703 states and 54575 transitions. Word has length 97 [2022-12-13 19:30:46,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:30:46,170 INFO L495 AbstractCegarLoop]: Abstraction has 37703 states and 54575 transitions. [2022-12-13 19:30:46,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 37703 states and 54575 transitions. [2022-12-13 19:30:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 19:30:46,172 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:30:46,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:30:46,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 19:30:46,172 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:30:46,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:46,172 INFO L85 PathProgramCache]: Analyzing trace with hash 412422283, now seen corresponding path program 1 times [2022-12-13 19:30:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:46,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438402913] [2022-12-13 19:30:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:46,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:30:46,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:46,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438402913] [2022-12-13 19:30:46,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438402913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:46,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:46,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:30:46,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543618413] [2022-12-13 19:30:46,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:46,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:30:46,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:46,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:30:46,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:30:46,348 INFO L87 Difference]: Start difference. First operand 37703 states and 54575 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:55,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:30:55,791 INFO L93 Difference]: Finished difference Result 111168 states and 160656 transitions. [2022-12-13 19:30:55,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:30:55,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 98 [2022-12-13 19:30:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:30:55,893 INFO L225 Difference]: With dead ends: 111168 [2022-12-13 19:30:55,893 INFO L226 Difference]: Without dead ends: 73474 [2022-12-13 19:30:55,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:30:55,927 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 415 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:30:55,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 494 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:30:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73474 states. [2022-12-13 19:31:05,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73474 to 73472. [2022-12-13 19:31:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73472 states, 73471 states have (on average 1.4341849164976657) internal successors, (105371), 73471 states have internal predecessors, (105371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73472 states to 73472 states and 105371 transitions. [2022-12-13 19:31:05,555 INFO L78 Accepts]: Start accepts. Automaton has 73472 states and 105371 transitions. Word has length 98 [2022-12-13 19:31:05,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:31:05,555 INFO L495 AbstractCegarLoop]: Abstraction has 73472 states and 105371 transitions. [2022-12-13 19:31:05,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:05,555 INFO L276 IsEmpty]: Start isEmpty. Operand 73472 states and 105371 transitions. [2022-12-13 19:31:05,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 19:31:05,558 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:31:05,559 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:31:05,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 19:31:05,559 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:31:05,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1473712481, now seen corresponding path program 1 times [2022-12-13 19:31:05,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:05,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557414694] [2022-12-13 19:31:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:05,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 19:31:05,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:05,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557414694] [2022-12-13 19:31:05,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557414694] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:05,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:05,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:31:05,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839324535] [2022-12-13 19:31:05,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:05,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:31:05,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:05,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:31:05,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:31:05,590 INFO L87 Difference]: Start difference. First operand 73472 states and 105371 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:25,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:31:25,486 INFO L93 Difference]: Finished difference Result 220330 states and 315975 transitions. [2022-12-13 19:31:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:31:25,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 99 [2022-12-13 19:31:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:31:25,706 INFO L225 Difference]: With dead ends: 220330 [2022-12-13 19:31:25,706 INFO L226 Difference]: Without dead ends: 146934 [2022-12-13 19:31:25,754 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:31:25,755 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 193 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:31:25,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 589 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:31:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146934 states. [2022-12-13 19:31:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146934 to 73474. [2022-12-13 19:31:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73474 states, 73473 states have (on average 1.4341730976004792) internal successors, (105373), 73473 states have internal predecessors, (105373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73474 states to 73474 states and 105373 transitions. [2022-12-13 19:31:37,244 INFO L78 Accepts]: Start accepts. Automaton has 73474 states and 105373 transitions. Word has length 99 [2022-12-13 19:31:37,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:31:37,244 INFO L495 AbstractCegarLoop]: Abstraction has 73474 states and 105373 transitions. [2022-12-13 19:31:37,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:37,244 INFO L276 IsEmpty]: Start isEmpty. Operand 73474 states and 105373 transitions. [2022-12-13 19:31:37,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 19:31:37,247 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:31:37,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:31:37,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 19:31:37,248 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:31:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1044771491, now seen corresponding path program 1 times [2022-12-13 19:31:37,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:37,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561767775] [2022-12-13 19:31:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:37,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:37,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 19:31:37,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:37,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561767775] [2022-12-13 19:31:37,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561767775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:37,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:37,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:31:37,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712316616] [2022-12-13 19:31:37,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:37,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:31:37,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:37,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:31:37,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:31:37,299 INFO L87 Difference]: Start difference. First operand 73474 states and 105373 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:31:59,945 INFO L93 Difference]: Finished difference Result 214816 states and 307688 transitions. [2022-12-13 19:31:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:31:59,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 100 [2022-12-13 19:31:59,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:32:00,163 INFO L225 Difference]: With dead ends: 214816 [2022-12-13 19:32:00,163 INFO L226 Difference]: Without dead ends: 142446 [2022-12-13 19:32:00,213 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:32:00,214 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 141 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:32:00,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 535 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:32:00,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142446 states. [2022-12-13 19:32:25,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142446 to 142444. [2022-12-13 19:32:25,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142444 states, 142443 states have (on average 1.418778037530802) internal successors, (202095), 142443 states have internal predecessors, (202095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142444 states to 142444 states and 202095 transitions. [2022-12-13 19:32:25,988 INFO L78 Accepts]: Start accepts. Automaton has 142444 states and 202095 transitions. Word has length 100 [2022-12-13 19:32:25,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:32:25,989 INFO L495 AbstractCegarLoop]: Abstraction has 142444 states and 202095 transitions. [2022-12-13 19:32:25,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 142444 states and 202095 transitions. [2022-12-13 19:32:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 19:32:25,995 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:32:25,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:32:25,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 19:32:25,995 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:32:25,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:32:25,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1665099002, now seen corresponding path program 1 times [2022-12-13 19:32:25,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:32:25,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318182201] [2022-12-13 19:32:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:25,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:32:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 19:32:26,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:32:26,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318182201] [2022-12-13 19:32:26,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318182201] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:32:26,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:32:26,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:32:26,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924294640] [2022-12-13 19:32:26,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:32:26,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:32:26,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:32:26,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:32:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:32:26,167 INFO L87 Difference]: Start difference. First operand 142444 states and 202095 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:33:11,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:11,865 INFO L93 Difference]: Finished difference Result 418544 states and 592770 transitions. [2022-12-13 19:33:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:33:11,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 100 [2022-12-13 19:33:11,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:12,356 INFO L225 Difference]: With dead ends: 418544 [2022-12-13 19:33:12,356 INFO L226 Difference]: Without dead ends: 276114 [2022-12-13 19:33:12,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:33:12,471 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 598 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:12,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 487 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:33:12,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276114 states. [2022-12-13 19:33:59,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276114 to 276112. [2022-12-13 19:33:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276112 states, 276111 states have (on average 1.4046053942074022) internal successors, (387827), 276111 states have internal predecessors, (387827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:34:00,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276112 states to 276112 states and 387827 transitions. [2022-12-13 19:34:00,496 INFO L78 Accepts]: Start accepts. Automaton has 276112 states and 387827 transitions. Word has length 100 [2022-12-13 19:34:00,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:34:00,496 INFO L495 AbstractCegarLoop]: Abstraction has 276112 states and 387827 transitions. [2022-12-13 19:34:00,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:34:00,496 INFO L276 IsEmpty]: Start isEmpty. Operand 276112 states and 387827 transitions. [2022-12-13 19:34:00,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 19:34:00,506 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:34:00,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:34:00,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 19:34:00,506 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:34:00,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:34:00,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1606170868, now seen corresponding path program 1 times [2022-12-13 19:34:00,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:34:00,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373052877] [2022-12-13 19:34:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:34:00,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:34:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:34:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 19:34:00,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:34:00,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373052877] [2022-12-13 19:34:00,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373052877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:34:00,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:34:00,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:34:00,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324787302] [2022-12-13 19:34:00,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:34:00,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:34:00,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:34:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:34:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:34:00,631 INFO L87 Difference]: Start difference. First operand 276112 states and 387827 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:34:53,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:34:53,239 INFO L93 Difference]: Finished difference Result 551739 states and 775050 transitions. [2022-12-13 19:34:53,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:34:53,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 100 [2022-12-13 19:34:53,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:34:53,762 INFO L225 Difference]: With dead ends: 551739 [2022-12-13 19:34:53,763 INFO L226 Difference]: Without dead ends: 276999 [2022-12-13 19:34:53,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:34:53,958 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 402 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:34:53,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 473 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:34:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276999 states. [2022-12-13 19:35:44,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276999 to 276187. [2022-12-13 19:35:44,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276187 states, 276186 states have (on average 1.4046222473260774) internal successors, (387937), 276186 states have internal predecessors, (387937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:35:44,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276187 states to 276187 states and 387937 transitions. [2022-12-13 19:35:44,804 INFO L78 Accepts]: Start accepts. Automaton has 276187 states and 387937 transitions. Word has length 100 [2022-12-13 19:35:44,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:35:44,804 INFO L495 AbstractCegarLoop]: Abstraction has 276187 states and 387937 transitions. [2022-12-13 19:35:44,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:35:44,804 INFO L276 IsEmpty]: Start isEmpty. Operand 276187 states and 387937 transitions. [2022-12-13 19:35:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 19:35:44,814 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:35:44,815 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:35:44,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 19:35:44,815 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:35:44,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:35:44,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1055362176, now seen corresponding path program 1 times [2022-12-13 19:35:44,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:35:44,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991341502] [2022-12-13 19:35:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:35:44,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:35:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 19:35:44,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:35:44,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991341502] [2022-12-13 19:35:44,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991341502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:35:44,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:35:44,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:35:44,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365322340] [2022-12-13 19:35:44,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:35:44,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:35:44,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:35:44,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:35:44,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:35:44,844 INFO L87 Difference]: Start difference. First operand 276187 states and 387937 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:26,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:37:26,226 INFO L93 Difference]: Finished difference Result 825701 states and 1160338 transitions. [2022-12-13 19:37:26,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:37:26,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 101 [2022-12-13 19:37:26,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:37:27,332 INFO L225 Difference]: With dead ends: 825701 [2022-12-13 19:37:27,333 INFO L226 Difference]: Without dead ends: 551609 [2022-12-13 19:37:27,586 INFO L412 NwaCegarLoop]: 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 [2022-12-13 19:37:27,587 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 179 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:37:27,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 480 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:37:28,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551609 states. [2022-12-13 19:38:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551609 to 276187. [2022-12-13 19:38:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276187 states, 276186 states have (on average 1.4046041435843961) internal successors, (387932), 276186 states have internal predecessors, (387932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:38:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276187 states to 276187 states and 387932 transitions. [2022-12-13 19:38:24,535 INFO L78 Accepts]: Start accepts. Automaton has 276187 states and 387932 transitions. Word has length 101 [2022-12-13 19:38:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:38:24,535 INFO L495 AbstractCegarLoop]: Abstraction has 276187 states and 387932 transitions. [2022-12-13 19:38:24,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:38:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 276187 states and 387932 transitions. [2022-12-13 19:38:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 19:38:24,545 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:38:24,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:38:24,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 19:38:24,546 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:38:24,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:38:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash -992148792, now seen corresponding path program 1 times [2022-12-13 19:38:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:38:24,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863213771] [2022-12-13 19:38:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:38:24,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:38:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:38:24,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:38:24,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863213771] [2022-12-13 19:38:24,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863213771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:38:24,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:38:24,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:38:24,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246938630] [2022-12-13 19:38:24,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:38:24,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:38:24,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:38:24,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:38:24,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:38:24,613 INFO L87 Difference]: Start difference. First operand 276187 states and 387932 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:37,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:39:37,165 INFO L93 Difference]: Finished difference Result 457217 states and 647759 transitions. [2022-12-13 19:39:37,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:39:37,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-12-13 19:39:37,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:39:37,882 INFO L225 Difference]: With dead ends: 457217 [2022-12-13 19:39:37,883 INFO L226 Difference]: Without dead ends: 379071 [2022-12-13 19:39:38,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:39:38,012 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 474 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:39:38,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 934 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:39:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379071 states. [2022-12-13 19:40:45,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379071 to 345211. [2022-12-13 19:40:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345211 states, 345210 states have (on average 1.408058862721242) internal successors, (486076), 345210 states have internal predecessors, (486076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345211 states to 345211 states and 486076 transitions. [2022-12-13 19:40:46,248 INFO L78 Accepts]: Start accepts. Automaton has 345211 states and 486076 transitions. Word has length 101 [2022-12-13 19:40:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:40:46,248 INFO L495 AbstractCegarLoop]: Abstraction has 345211 states and 486076 transitions. [2022-12-13 19:40:46,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 345211 states and 486076 transitions. [2022-12-13 19:40:46,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 19:40:46,259 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:40:46,259 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:40:46,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 19:40:46,260 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:40:46,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:46,260 INFO L85 PathProgramCache]: Analyzing trace with hash -982601203, now seen corresponding path program 1 times [2022-12-13 19:40:46,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:46,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448376007] [2022-12-13 19:40:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:46,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 19:40:46,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:46,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448376007] [2022-12-13 19:40:46,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448376007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:40:46,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:40:46,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:40:46,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984506201] [2022-12-13 19:40:46,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:40:46,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:40:46,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:46,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:40:46,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:40:46,348 INFO L87 Difference]: Start difference. First operand 345211 states and 486076 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)