./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS --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 f29c97960939e53f55e46ebed0dba8de02c44a30d845c26a8268aafa8af6f244 --- 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-4e7fbc6 [2022-11-23 03:35:09,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:35:09,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:35:09,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:35:09,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:35:09,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:35:09,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:35:09,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:35:09,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:35:09,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:35:09,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:35:09,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:35:09,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:35:09,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:35:09,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:35:09,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:35:09,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:35:09,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:35:09,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:35:09,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:35:09,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:35:09,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:35:09,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:35:09,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:35:09,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:35:09,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:35:09,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:35:09,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:35:09,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:35:09,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:35:09,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:35:09,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:35:09,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:35:09,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:35:09,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:35:09,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:35:09,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:35:09,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:35:09,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:35:09,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:35:09,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:35:09,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:35:09,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:35:09,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:35:09,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:35:09,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:35:09,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:35:09,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:35:09,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:35:09,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:35:09,904 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:35:09,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:35:09,906 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:35:09,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:35:09,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:35:09,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:35:09,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:35:09,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:35:09,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:35:09,908 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:35:09,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:35:09,909 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:35:09,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:35:09,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:35:09,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:35:09,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:35:09,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:35:09,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:35:09,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:35:09,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:35:09,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:35:09,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:35:09,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:35:09,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:35:09,913 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:35:09,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:35:09,914 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_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29c97960939e53f55e46ebed0dba8de02c44a30d845c26a8268aafa8af6f244 [2022-11-23 03:35:10,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:35:10,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:35:10,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:35:10,236 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:35:10,236 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:35:10,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2022-11-23 03:35:13,310 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:35:13,552 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:35:13,552 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2022-11-23 03:35:13,565 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/data/99c8d1b60/edad9d6bbc5f4aa6a4587272a5912f0b/FLAGb4365d2ec [2022-11-23 03:35:13,589 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/data/99c8d1b60/edad9d6bbc5f4aa6a4587272a5912f0b [2022-11-23 03:35:13,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:35:13,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:35:13,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:35:13,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:35:13,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:35:13,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:35:13" (1/1) ... [2022-11-23 03:35:13,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60643603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:13, skipping insertion in model container [2022-11-23 03:35:13,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:35:13" (1/1) ... [2022-11-23 03:35:13,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:35:13,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:35:13,892 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_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c[12968,12981] [2022-11-23 03:35:13,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:35:13,916 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:35:14,010 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_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c[12968,12981] [2022-11-23 03:35:14,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:35:14,043 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:35:14,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14 WrapperNode [2022-11-23 03:35:14,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:35:14,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:35:14,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:35:14,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:35:14,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14" (1/1) ... [2022-11-23 03:35:14,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14" (1/1) ... [2022-11-23 03:35:14,100 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 419 [2022-11-23 03:35:14,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:35:14,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:35:14,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:35:14,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:35:14,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14" (1/1) ... [2022-11-23 03:35:14,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14" (1/1) ... [2022-11-23 03:35:14,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14" (1/1) ... [2022-11-23 03:35:14,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14" (1/1) ... [2022-11-23 03:35:14,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14" (1/1) ... [2022-11-23 03:35:14,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14" (1/1) ... [2022-11-23 03:35:14,134 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14" (1/1) ... [2022-11-23 03:35:14,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14" (1/1) ... [2022-11-23 03:35:14,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:35:14,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:35:14,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:35:14,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:35:14,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14" (1/1) ... [2022-11-23 03:35:14,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:35:14,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:35:14,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:35:14,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25376aac-5b5d-48d0-8ad2-8d6d63ea8392/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:35:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:35:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:35:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:35:14,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:35:14,389 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:35:14,391 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:35:15,213 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:35:15,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:35:15,223 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 03:35:15,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:35:15 BoogieIcfgContainer [2022-11-23 03:35:15,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:35:15,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:35:15,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:35:15,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:35:15,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:35:13" (1/3) ... [2022-11-23 03:35:15,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c4d492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:35:15, skipping insertion in model container [2022-11-23 03:35:15,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:35:14" (2/3) ... [2022-11-23 03:35:15,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c4d492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:35:15, skipping insertion in model container [2022-11-23 03:35:15,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:35:15" (3/3) ... [2022-11-23 03:35:15,247 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2022-11-23 03:35:15,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:35:15,271 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:35:15,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:35:15,368 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;@2599ac59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:35:15,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:35:15,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 123 states have (on average 1.7723577235772359) internal successors, (218), 124 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 03:35:15,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:15,399 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] [2022-11-23 03:35:15,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:15,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:15,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1506824827, now seen corresponding path program 1 times [2022-11-23 03:35:15,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:15,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55560803] [2022-11-23 03:35:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:15,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:15,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:15,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55560803] [2022-11-23 03:35:15,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55560803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:15,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:15,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:35:15,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223578517] [2022-11-23 03:35:15,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:15,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:35:15,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:35:15,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:35:15,814 INFO L87 Difference]: Start difference. First operand has 125 states, 123 states have (on average 1.7723577235772359) internal successors, (218), 124 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:15,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:15,874 INFO L93 Difference]: Finished difference Result 190 states and 331 transitions. [2022-11-23 03:35:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:35:15,879 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-23 03:35:15,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:15,894 INFO L225 Difference]: With dead ends: 190 [2022-11-23 03:35:15,896 INFO L226 Difference]: Without dead ends: 121 [2022-11-23 03:35:15,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:35:15,904 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:35:15,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:35:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-23 03:35:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-11-23 03:35:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.7583333333333333) internal successors, (211), 120 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:15,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 211 transitions. [2022-11-23 03:35:15,967 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 211 transitions. Word has length 37 [2022-11-23 03:35:15,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:15,968 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 211 transitions. [2022-11-23 03:35:15,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:15,968 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 211 transitions. [2022-11-23 03:35:15,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 03:35:15,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:15,970 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] [2022-11-23 03:35:15,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:35:15,974 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash 689176377, now seen corresponding path program 1 times [2022-11-23 03:35:15,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:15,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641151297] [2022-11-23 03:35:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:15,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:16,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:16,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641151297] [2022-11-23 03:35:16,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641151297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:16,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:16,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:35:16,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721874599] [2022-11-23 03:35:16,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:16,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:35:16,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:16,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:35:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:35:16,245 INFO L87 Difference]: Start difference. First operand 121 states and 211 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:16,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:16,356 INFO L93 Difference]: Finished difference Result 189 states and 324 transitions. [2022-11-23 03:35:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:35:16,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-23 03:35:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:16,358 INFO L225 Difference]: With dead ends: 189 [2022-11-23 03:35:16,358 INFO L226 Difference]: Without dead ends: 121 [2022-11-23 03:35:16,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:35:16,361 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 3 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:35:16,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 806 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:35:16,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-23 03:35:16,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-11-23 03:35:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.5333333333333334) internal successors, (184), 120 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:16,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 184 transitions. [2022-11-23 03:35:16,370 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 184 transitions. Word has length 37 [2022-11-23 03:35:16,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:16,370 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 184 transitions. [2022-11-23 03:35:16,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:16,371 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 184 transitions. [2022-11-23 03:35:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 03:35:16,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:16,373 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] [2022-11-23 03:35:16,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:35:16,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash 500395394, now seen corresponding path program 1 times [2022-11-23 03:35:16,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:16,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297221209] [2022-11-23 03:35:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:16,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:16,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:16,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297221209] [2022-11-23 03:35:16,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297221209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:16,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:16,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:35:16,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862147643] [2022-11-23 03:35:16,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:16,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:35:16,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:16,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:35:16,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:35:16,540 INFO L87 Difference]: Start difference. First operand 121 states and 184 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2022-11-23 03:35:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:16,630 INFO L93 Difference]: Finished difference Result 238 states and 381 transitions. [2022-11-23 03:35:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:35:16,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 [2022-11-23 03:35:16,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:16,637 INFO L225 Difference]: With dead ends: 238 [2022-11-23 03:35:16,638 INFO L226 Difference]: Without dead ends: 174 [2022-11-23 03:35:16,639 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 [2022-11-23 03:35:16,641 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 83 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:35:16,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 315 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:35:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-23 03:35:16,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2022-11-23 03:35:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.5529411764705883) internal successors, (264), 170 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 264 transitions. [2022-11-23 03:35:16,666 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 264 transitions. Word has length 63 [2022-11-23 03:35:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:16,667 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 264 transitions. [2022-11-23 03:35:16,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2022-11-23 03:35:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 264 transitions. [2022-11-23 03:35:16,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 03:35:16,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:16,671 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] [2022-11-23 03:35:16,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:35:16,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:16,673 INFO L85 PathProgramCache]: Analyzing trace with hash 634628362, now seen corresponding path program 1 times [2022-11-23 03:35:16,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:16,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287235816] [2022-11-23 03:35:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:16,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:16,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:16,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287235816] [2022-11-23 03:35:16,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287235816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:16,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:16,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:35:16,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652901761] [2022-11-23 03:35:16,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:16,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:35:16,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:16,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:35:16,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:35:16,779 INFO L87 Difference]: Start difference. First operand 171 states and 264 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) [2022-11-23 03:35:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:16,827 INFO L93 Difference]: Finished difference Result 385 states and 616 transitions. [2022-11-23 03:35:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:35:16,828 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 [2022-11-23 03:35:16,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:16,831 INFO L225 Difference]: With dead ends: 385 [2022-11-23 03:35:16,832 INFO L226 Difference]: Without dead ends: 271 [2022-11-23 03:35:16,836 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 [2022-11-23 03:35:16,841 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 85 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 332 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 [2022-11-23 03:35:16,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 332 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:35:16,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-23 03:35:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 267. [2022-11-23 03:35:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5789473684210527) internal successors, (420), 266 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 420 transitions. [2022-11-23 03:35:16,892 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 420 transitions. Word has length 65 [2022-11-23 03:35:16,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:16,893 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 420 transitions. [2022-11-23 03:35:16,894 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) [2022-11-23 03:35:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 420 transitions. [2022-11-23 03:35:16,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 03:35:16,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:16,903 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] [2022-11-23 03:35:16,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:35:16,904 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:16,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:16,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1765336754, now seen corresponding path program 1 times [2022-11-23 03:35:16,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:16,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836616538] [2022-11-23 03:35:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:16,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:17,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:17,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836616538] [2022-11-23 03:35:17,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836616538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:17,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:17,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:35:17,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311657684] [2022-11-23 03:35:17,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:17,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:35:17,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:17,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:35:17,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:35:17,074 INFO L87 Difference]: Start difference. First operand 267 states and 420 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:17,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:17,147 INFO L93 Difference]: Finished difference Result 659 states and 1058 transitions. [2022-11-23 03:35:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:35:17,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-23 03:35:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:17,151 INFO L225 Difference]: With dead ends: 659 [2022-11-23 03:35:17,152 INFO L226 Difference]: Without dead ends: 449 [2022-11-23 03:35:17,153 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 [2022-11-23 03:35:17,156 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 79 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 333 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 [2022-11-23 03:35:17,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 333 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:35:17,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-23 03:35:17,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 443. [2022-11-23 03:35:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.583710407239819) internal successors, (700), 442 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 700 transitions. [2022-11-23 03:35:17,211 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 700 transitions. Word has length 67 [2022-11-23 03:35:17,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:17,212 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 700 transitions. [2022-11-23 03:35:17,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 700 transitions. [2022-11-23 03:35:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 03:35:17,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:17,218 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] [2022-11-23 03:35:17,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:35:17,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:17,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1263831096, now seen corresponding path program 1 times [2022-11-23 03:35:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:17,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151885751] [2022-11-23 03:35:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:17,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:17,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151885751] [2022-11-23 03:35:17,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151885751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:17,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:17,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:35:17,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058925983] [2022-11-23 03:35:17,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:17,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:35:17,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:17,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:35:17,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:35:17,454 INFO L87 Difference]: Start difference. First operand 443 states and 700 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:17,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:17,680 INFO L93 Difference]: Finished difference Result 2199 states and 3570 transitions. [2022-11-23 03:35:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:35:17,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-23 03:35:17,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:17,688 INFO L225 Difference]: With dead ends: 2199 [2022-11-23 03:35:17,689 INFO L226 Difference]: Without dead ends: 1813 [2022-11-23 03:35:17,690 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 [2022-11-23 03:35:17,692 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 735 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:35:17,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 991 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:35:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2022-11-23 03:35:17,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 811. [2022-11-23 03:35:17,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 810 states have (on average 1.5950617283950617) internal successors, (1292), 810 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:17,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1292 transitions. [2022-11-23 03:35:17,756 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1292 transitions. Word has length 69 [2022-11-23 03:35:17,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:17,757 INFO L495 AbstractCegarLoop]: Abstraction has 811 states and 1292 transitions. [2022-11-23 03:35:17,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1292 transitions. [2022-11-23 03:35:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 03:35:17,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:17,760 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] [2022-11-23 03:35:17,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:35:17,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:17,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:17,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1398774354, now seen corresponding path program 1 times [2022-11-23 03:35:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:17,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405744145] [2022-11-23 03:35:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:17,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:17,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:17,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405744145] [2022-11-23 03:35:17,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405744145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:17,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:17,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:35:17,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775178062] [2022-11-23 03:35:17,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:17,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:35:17,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:17,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:35:17,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:35:17,891 INFO L87 Difference]: Start difference. First operand 811 states and 1292 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:18,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:18,098 INFO L93 Difference]: Finished difference Result 2921 states and 4705 transitions. [2022-11-23 03:35:18,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:35:18,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-23 03:35:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:18,110 INFO L225 Difference]: With dead ends: 2921 [2022-11-23 03:35:18,110 INFO L226 Difference]: Without dead ends: 2167 [2022-11-23 03:35:18,111 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 [2022-11-23 03:35:18,114 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 311 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:35:18,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 588 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:35:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2022-11-23 03:35:18,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1480. [2022-11-23 03:35:18,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 1.5963488843813387) internal successors, (2361), 1479 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2361 transitions. [2022-11-23 03:35:18,238 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2361 transitions. Word has length 70 [2022-11-23 03:35:18,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:18,239 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 2361 transitions. [2022-11-23 03:35:18,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2361 transitions. [2022-11-23 03:35:18,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 03:35:18,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:18,240 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] [2022-11-23 03:35:18,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:35:18,241 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:18,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:18,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2128806959, now seen corresponding path program 1 times [2022-11-23 03:35:18,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:18,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728508730] [2022-11-23 03:35:18,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:18,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:18,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:18,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728508730] [2022-11-23 03:35:18,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728508730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:18,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:18,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:35:18,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594850959] [2022-11-23 03:35:18,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:18,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:35:18,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:18,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:35:18,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:35:18,321 INFO L87 Difference]: Start difference. First operand 1480 states and 2361 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2022-11-23 03:35:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:18,546 INFO L93 Difference]: Finished difference Result 4349 states and 7011 transitions. [2022-11-23 03:35:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:35:18,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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 [2022-11-23 03:35:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:18,556 INFO L225 Difference]: With dead ends: 4349 [2022-11-23 03:35:18,557 INFO L226 Difference]: Without dead ends: 2926 [2022-11-23 03:35:18,559 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 [2022-11-23 03:35:18,560 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 309 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:35:18,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 589 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:35:18,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2022-11-23 03:35:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2187. [2022-11-23 03:35:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2186 states have (on average 1.5946935041171089) internal successors, (3486), 2186 states have internal predecessors, (3486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3486 transitions. [2022-11-23 03:35:18,739 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3486 transitions. Word has length 71 [2022-11-23 03:35:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:18,739 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 3486 transitions. [2022-11-23 03:35:18,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2022-11-23 03:35:18,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3486 transitions. [2022-11-23 03:35:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 03:35:18,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:18,743 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, 1] [2022-11-23 03:35:18,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:35:18,744 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:18,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:18,744 INFO L85 PathProgramCache]: Analyzing trace with hash -16317691, now seen corresponding path program 1 times [2022-11-23 03:35:18,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:18,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377332378] [2022-11-23 03:35:18,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:18,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:18,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:18,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377332378] [2022-11-23 03:35:18,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377332378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:18,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:18,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:35:18,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195213255] [2022-11-23 03:35:18,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:18,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:35:18,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:18,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:35:18,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:35:18,840 INFO L87 Difference]: Start difference. First operand 2187 states and 3486 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:19,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:19,143 INFO L93 Difference]: Finished difference Result 6413 states and 10311 transitions. [2022-11-23 03:35:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:35:19,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-11-23 03:35:19,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:19,159 INFO L225 Difference]: With dead ends: 6413 [2022-11-23 03:35:19,159 INFO L226 Difference]: Without dead ends: 4283 [2022-11-23 03:35:19,162 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 [2022-11-23 03:35:19,163 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 307 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:35:19,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 598 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:35:19,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2022-11-23 03:35:19,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 3213. [2022-11-23 03:35:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3213 states, 3212 states have (on average 1.5915317559153175) internal successors, (5112), 3212 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 5112 transitions. [2022-11-23 03:35:19,381 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 5112 transitions. Word has length 72 [2022-11-23 03:35:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:19,382 INFO L495 AbstractCegarLoop]: Abstraction has 3213 states and 5112 transitions. [2022-11-23 03:35:19,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 5112 transitions. [2022-11-23 03:35:19,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 03:35:19,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:19,384 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, 1] [2022-11-23 03:35:19,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:35:19,385 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:19,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:19,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2114412097, now seen corresponding path program 1 times [2022-11-23 03:35:19,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:19,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194623833] [2022-11-23 03:35:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:19,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:19,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:19,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194623833] [2022-11-23 03:35:19,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194623833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:19,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:19,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:35:19,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005298559] [2022-11-23 03:35:19,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:19,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:35:19,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:19,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:35:19,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:35:19,486 INFO L87 Difference]: Start difference. First operand 3213 states and 5112 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:19,826 INFO L93 Difference]: Finished difference Result 7326 states and 11666 transitions. [2022-11-23 03:35:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:35:19,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-11-23 03:35:19,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:19,845 INFO L225 Difference]: With dead ends: 7326 [2022-11-23 03:35:19,846 INFO L226 Difference]: Without dead ends: 5042 [2022-11-23 03:35:19,849 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 [2022-11-23 03:35:19,850 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 78 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 384 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 [2022-11-23 03:35:19,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 384 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:35:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5042 states. [2022-11-23 03:35:20,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5042 to 5040. [2022-11-23 03:35:20,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5040 states, 5039 states have (on average 1.5721373288350864) internal successors, (7922), 5039 states have internal predecessors, (7922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 7922 transitions. [2022-11-23 03:35:20,232 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 7922 transitions. Word has length 72 [2022-11-23 03:35:20,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:20,233 INFO L495 AbstractCegarLoop]: Abstraction has 5040 states and 7922 transitions. [2022-11-23 03:35:20,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 7922 transitions. [2022-11-23 03:35:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 03:35:20,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:20,235 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, 1] [2022-11-23 03:35:20,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:35:20,235 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash -33308114, now seen corresponding path program 1 times [2022-11-23 03:35:20,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:20,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894671375] [2022-11-23 03:35:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:20,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894671375] [2022-11-23 03:35:20,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894671375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:20,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:20,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:35:20,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840711110] [2022-11-23 03:35:20,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:20,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:35:20,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:20,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:35:20,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:35:20,294 INFO L87 Difference]: Start difference. First operand 5040 states and 7922 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:20,760 INFO L93 Difference]: Finished difference Result 11134 states and 17544 transitions. [2022-11-23 03:35:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:35:20,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-11-23 03:35:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:20,808 INFO L225 Difference]: With dead ends: 11134 [2022-11-23 03:35:20,808 INFO L226 Difference]: Without dead ends: 7561 [2022-11-23 03:35:20,813 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 [2022-11-23 03:35:20,815 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 84 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 407 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 [2022-11-23 03:35:20,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 407 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:35:20,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7561 states. [2022-11-23 03:35:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7561 to 7559. [2022-11-23 03:35:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7559 states, 7558 states have (on average 1.5547763958719238) internal successors, (11751), 7558 states have internal predecessors, (11751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7559 states to 7559 states and 11751 transitions. [2022-11-23 03:35:21,417 INFO L78 Accepts]: Start accepts. Automaton has 7559 states and 11751 transitions. Word has length 72 [2022-11-23 03:35:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:21,418 INFO L495 AbstractCegarLoop]: Abstraction has 7559 states and 11751 transitions. [2022-11-23 03:35:21,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 7559 states and 11751 transitions. [2022-11-23 03:35:21,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 03:35:21,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:21,420 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, 1] [2022-11-23 03:35:21,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 03:35:21,420 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:21,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:21,421 INFO L85 PathProgramCache]: Analyzing trace with hash -816632547, now seen corresponding path program 1 times [2022-11-23 03:35:21,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:21,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713918807] [2022-11-23 03:35:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:21,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:21,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:21,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713918807] [2022-11-23 03:35:21,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713918807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:21,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:21,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:35:21,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666392830] [2022-11-23 03:35:21,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:21,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:35:21,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:21,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:35:21,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:35:21,495 INFO L87 Difference]: Start difference. First operand 7559 states and 11751 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:22,253 INFO L93 Difference]: Finished difference Result 18205 states and 28466 transitions. [2022-11-23 03:35:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:35:22,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-11-23 03:35:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:22,280 INFO L225 Difference]: With dead ends: 18205 [2022-11-23 03:35:22,280 INFO L226 Difference]: Without dead ends: 10717 [2022-11-23 03:35:22,289 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 [2022-11-23 03:35:22,290 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 90 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 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 [2022-11-23 03:35:22,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 422 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:35:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10717 states. [2022-11-23 03:35:23,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10717 to 10715. [2022-11-23 03:35:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10715 states, 10714 states have (on average 1.5602016053761434) internal successors, (16716), 10714 states have internal predecessors, (16716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10715 states to 10715 states and 16716 transitions. [2022-11-23 03:35:23,074 INFO L78 Accepts]: Start accepts. Automaton has 10715 states and 16716 transitions. Word has length 72 [2022-11-23 03:35:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:23,075 INFO L495 AbstractCegarLoop]: Abstraction has 10715 states and 16716 transitions. [2022-11-23 03:35:23,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand 10715 states and 16716 transitions. [2022-11-23 03:35:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 03:35:23,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:23,077 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, 1, 1, 1] [2022-11-23 03:35:23,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 03:35:23,077 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:23,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:23,079 INFO L85 PathProgramCache]: Analyzing trace with hash -628954083, now seen corresponding path program 1 times [2022-11-23 03:35:23,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:23,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413511286] [2022-11-23 03:35:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:23,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:23,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:23,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413511286] [2022-11-23 03:35:23,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413511286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:23,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:23,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:35:23,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300073592] [2022-11-23 03:35:23,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:23,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:35:23,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:23,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:35:23,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:35:23,292 INFO L87 Difference]: Start difference. First operand 10715 states and 16716 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:24,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:24,326 INFO L93 Difference]: Finished difference Result 21361 states and 33340 transitions. [2022-11-23 03:35:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:35:24,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-23 03:35:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:24,355 INFO L225 Difference]: With dead ends: 21361 [2022-11-23 03:35:24,355 INFO L226 Difference]: Without dead ends: 10717 [2022-11-23 03:35:24,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:35:24,370 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 229 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:35:24,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 490 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:35:24,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10717 states. [2022-11-23 03:35:25,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10717 to 10715. [2022-11-23 03:35:25,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10715 states, 10714 states have (on average 1.5462012320328542) internal successors, (16566), 10714 states have internal predecessors, (16566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10715 states to 10715 states and 16566 transitions. [2022-11-23 03:35:25,144 INFO L78 Accepts]: Start accepts. Automaton has 10715 states and 16566 transitions. Word has length 74 [2022-11-23 03:35:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:25,145 INFO L495 AbstractCegarLoop]: Abstraction has 10715 states and 16566 transitions. [2022-11-23 03:35:25,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 10715 states and 16566 transitions. [2022-11-23 03:35:25,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:35:25,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:25,146 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, 1, 1, 1, 1, 1, 1] [2022-11-23 03:35:25,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 03:35:25,147 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash -820820622, now seen corresponding path program 1 times [2022-11-23 03:35:25,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:25,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068121863] [2022-11-23 03:35:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:25,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:25,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:25,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068121863] [2022-11-23 03:35:25,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068121863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:25,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:25,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:35:25,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901239722] [2022-11-23 03:35:25,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:25,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:35:25,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:35:25,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:35:25,417 INFO L87 Difference]: Start difference. First operand 10715 states and 16566 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:26,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:26,492 INFO L93 Difference]: Finished difference Result 30918 states and 47950 transitions. [2022-11-23 03:35:26,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:35:26,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-11-23 03:35:26,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:26,545 INFO L225 Difference]: With dead ends: 30918 [2022-11-23 03:35:26,545 INFO L226 Difference]: Without dead ends: 20274 [2022-11-23 03:35:26,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:35:26,558 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 148 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:35:26,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 651 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:35:26,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20274 states. [2022-11-23 03:35:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20274 to 20272. [2022-11-23 03:35:28,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20272 states, 20271 states have (on average 1.5323368358739085) internal successors, (31062), 20271 states have internal predecessors, (31062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20272 states to 20272 states and 31062 transitions. [2022-11-23 03:35:28,055 INFO L78 Accepts]: Start accepts. Automaton has 20272 states and 31062 transitions. Word has length 77 [2022-11-23 03:35:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:28,055 INFO L495 AbstractCegarLoop]: Abstraction has 20272 states and 31062 transitions. [2022-11-23 03:35:28,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 20272 states and 31062 transitions. [2022-11-23 03:35:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-23 03:35:28,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:28,057 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:35:28,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 03:35:28,057 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:28,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:28,058 INFO L85 PathProgramCache]: Analyzing trace with hash -104211194, now seen corresponding path program 1 times [2022-11-23 03:35:28,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:28,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946908656] [2022-11-23 03:35:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:28,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:28,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:28,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946908656] [2022-11-23 03:35:28,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946908656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:28,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:28,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:35:28,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501099384] [2022-11-23 03:35:28,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:28,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:35:28,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:28,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:35:28,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:35:28,350 INFO L87 Difference]: Start difference. First operand 20272 states and 31062 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:30,298 INFO L93 Difference]: Finished difference Result 41229 states and 62523 transitions. [2022-11-23 03:35:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:35:30,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-23 03:35:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:30,390 INFO L225 Difference]: With dead ends: 41229 [2022-11-23 03:35:30,390 INFO L226 Difference]: Without dead ends: 41227 [2022-11-23 03:35:30,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 03:35:30,397 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 269 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:35:30,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 776 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:35:30,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41227 states. [2022-11-23 03:35:32,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41227 to 21433. [2022-11-23 03:35:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21433 states, 21432 states have (on average 1.5030795072788354) internal successors, (32214), 21432 states have internal predecessors, (32214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21433 states to 21433 states and 32214 transitions. [2022-11-23 03:35:32,290 INFO L78 Accepts]: Start accepts. Automaton has 21433 states and 32214 transitions. Word has length 78 [2022-11-23 03:35:32,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:32,290 INFO L495 AbstractCegarLoop]: Abstraction has 21433 states and 32214 transitions. [2022-11-23 03:35:32,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:32,291 INFO L276 IsEmpty]: Start isEmpty. Operand 21433 states and 32214 transitions. [2022-11-23 03:35:32,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 03:35:32,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:32,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-11-23 03:35:32,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 03:35:32,294 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:32,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:32,294 INFO L85 PathProgramCache]: Analyzing trace with hash -702667206, now seen corresponding path program 1 times [2022-11-23 03:35:32,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:32,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016718982] [2022-11-23 03:35:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:32,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 03:35:32,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:32,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016718982] [2022-11-23 03:35:32,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016718982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:32,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:32,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:35:32,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087198886] [2022-11-23 03:35:32,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:32,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:35:32,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:32,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:35:32,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:35:32,405 INFO L87 Difference]: Start difference. First operand 21433 states and 32214 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) [2022-11-23 03:35:35,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:35,383 INFO L93 Difference]: Finished difference Result 64007 states and 96105 transitions. [2022-11-23 03:35:35,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:35:35,384 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 105 [2022-11-23 03:35:35,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:35,473 INFO L225 Difference]: With dead ends: 64007 [2022-11-23 03:35:35,473 INFO L226 Difference]: Without dead ends: 42636 [2022-11-23 03:35:35,507 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 [2022-11-23 03:35:35,507 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 117 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 419 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 [2022-11-23 03:35:35,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 419 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:35:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42636 states. [2022-11-23 03:35:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42636 to 42634. [2022-11-23 03:35:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42634 states, 42633 states have (on average 1.4914502849905003) internal successors, (63585), 42633 states have internal predecessors, (63585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42634 states to 42634 states and 63585 transitions. [2022-11-23 03:35:39,153 INFO L78 Accepts]: Start accepts. Automaton has 42634 states and 63585 transitions. Word has length 105 [2022-11-23 03:35:39,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:39,153 INFO L495 AbstractCegarLoop]: Abstraction has 42634 states and 63585 transitions. [2022-11-23 03:35:39,153 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) [2022-11-23 03:35:39,154 INFO L276 IsEmpty]: Start isEmpty. Operand 42634 states and 63585 transitions. [2022-11-23 03:35:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 03:35:39,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:39,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-11-23 03:35:39,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 03:35:39,158 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:39,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:39,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1444579879, now seen corresponding path program 1 times [2022-11-23 03:35:39,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:39,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252489310] [2022-11-23 03:35:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:39,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:35:39,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:39,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252489310] [2022-11-23 03:35:39,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252489310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:39,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:39,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:35:39,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710682018] [2022-11-23 03:35:39,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:39,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:35:39,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:39,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:35:39,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:35:39,248 INFO L87 Difference]: Start difference. First operand 42634 states and 63585 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:44,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:35:44,970 INFO L93 Difference]: Finished difference Result 127338 states and 189715 transitions. [2022-11-23 03:35:44,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:35:44,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-11-23 03:35:44,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:35:45,092 INFO L225 Difference]: With dead ends: 127338 [2022-11-23 03:35:45,092 INFO L226 Difference]: Without dead ends: 84809 [2022-11-23 03:35:45,113 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 [2022-11-23 03:35:45,114 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 103 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 404 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 [2022-11-23 03:35:45,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 404 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:35:45,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84809 states. [2022-11-23 03:35:50,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84809 to 84807. [2022-11-23 03:35:50,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84807 states, 84806 states have (on average 1.479683041294248) internal successors, (125486), 84806 states have internal predecessors, (125486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84807 states to 84807 states and 125486 transitions. [2022-11-23 03:35:50,864 INFO L78 Accepts]: Start accepts. Automaton has 84807 states and 125486 transitions. Word has length 105 [2022-11-23 03:35:50,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:35:50,865 INFO L495 AbstractCegarLoop]: Abstraction has 84807 states and 125486 transitions. [2022-11-23 03:35:50,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:35:50,865 INFO L276 IsEmpty]: Start isEmpty. Operand 84807 states and 125486 transitions. [2022-11-23 03:35:50,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 03:35:50,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:35:50,870 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-11-23 03:35:50,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 03:35:50,870 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:35:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:35:50,871 INFO L85 PathProgramCache]: Analyzing trace with hash 661255446, now seen corresponding path program 1 times [2022-11-23 03:35:50,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:35:50,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156371862] [2022-11-23 03:35:50,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:35:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:35:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:35:50,954 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:35:50,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:35:50,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156371862] [2022-11-23 03:35:50,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156371862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:35:50,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:35:50,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:35:50,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122950933] [2022-11-23 03:35:50,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:35:50,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:35:50,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:35:50,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:35:50,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:35:50,956 INFO L87 Difference]: Start difference. First operand 84807 states and 125486 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)