./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b0406e617bfcdc7e6543e19b38e9be8eeb37f2896cb91bcfe6035d747328da7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:06:59,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:06:59,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:06:59,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:06:59,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:06:59,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:06:59,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:06:59,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:06:59,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:06:59,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:06:59,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:06:59,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:06:59,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:06:59,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:06:59,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:06:59,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:06:59,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:06:59,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:06:59,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:06:59,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:06:59,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:06:59,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:06:59,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:06:59,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:06:59,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:06:59,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:06:59,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:06:59,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:06:59,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:06:59,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:06:59,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:06:59,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:06:59,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:06:59,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:06:59,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:06:59,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:06:59,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:06:59,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:06:59,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:06:59,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:06:59,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:06:59,338 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:06:59,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:06:59,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:06:59,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:06:59,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:06:59,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:06:59,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:06:59,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:06:59,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:06:59,361 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:06:59,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:06:59,361 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:06:59,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:06:59,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:06:59,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:06:59,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:06:59,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:06:59,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:06:59,363 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:06:59,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:06:59,363 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:06:59,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:06:59,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:06:59,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:06:59,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:06:59,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:06:59,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:06:59,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:06:59,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:06:59,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:06:59,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:06:59,365 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:06:59,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:06:59,366 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:06:59,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:06:59,366 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:06:59,366 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_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b0406e617bfcdc7e6543e19b38e9be8eeb37f2896cb91bcfe6035d747328da7 [2022-12-13 13:06:59,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:06:59,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:06:59,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:06:59,567 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:06:59,568 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:06:59,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2022-12-13 13:07:02,027 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:07:02,228 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:07:02,228 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2022-12-13 13:07:02,237 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/data/f1ca3fb47/3777fde7f6da4486b15c2c034141d391/FLAG2094967cc [2022-12-13 13:07:02,587 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/data/f1ca3fb47/3777fde7f6da4486b15c2c034141d391 [2022-12-13 13:07:02,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:07:02,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:07:02,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:07:02,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:07:02,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:07:02,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326218b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02, skipping insertion in model container [2022-12-13 13:07:02,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:07:02,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:07:02,788 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_4288ced8-04db-49e9-bfbe-14c427567c19/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c[11348,11361] [2022-12-13 13:07:02,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:07:02,799 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:07:02,836 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_4288ced8-04db-49e9-bfbe-14c427567c19/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c[11348,11361] [2022-12-13 13:07:02,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:07:02,848 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:07:02,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02 WrapperNode [2022-12-13 13:07:02,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:07:02,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:07:02,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:07:02,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:07:02,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,885 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 405 [2022-12-13 13:07:02,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:07:02,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:07:02,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:07:02,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:07:02,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,914 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:07:02,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:07:02,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:07:02,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:07:02,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02" (1/1) ... [2022-12-13 13:07:02,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:07:02,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:07:02,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:07:02,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4288ced8-04db-49e9-bfbe-14c427567c19/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:07:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:07:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:07:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:07:02,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:07:03,066 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:07:03,068 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:07:03,497 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:07:03,505 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:07:03,505 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 13:07:03,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:07:03 BoogieIcfgContainer [2022-12-13 13:07:03,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:07:03,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:07:03,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:07:03,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:07:03,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:07:02" (1/3) ... [2022-12-13 13:07:03,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a40a5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:07:03, skipping insertion in model container [2022-12-13 13:07:03,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:07:02" (2/3) ... [2022-12-13 13:07:03,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a40a5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:07:03, skipping insertion in model container [2022-12-13 13:07:03,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:07:03" (3/3) ... [2022-12-13 13:07:03,517 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2022-12-13 13:07:03,534 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:07:03,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:07:03,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:07:03,580 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;@44d533b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:07:03,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:07:03,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 111 states have (on average 1.7747747747747749) internal successors, (197), 112 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 13:07:03,591 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:03,591 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] [2022-12-13 13:07:03,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:03,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1840534402, now seen corresponding path program 1 times [2022-12-13 13:07:03,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:03,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728758615] [2022-12-13 13:07:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:03,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:03,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:03,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728758615] [2022-12-13 13:07:03,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728758615] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:03,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:03,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:07:03,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090975970] [2022-12-13 13:07:03,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:03,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:07:03,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:07:03,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:07:03,825 INFO L87 Difference]: Start difference. First operand has 113 states, 111 states have (on average 1.7747747747747749) internal successors, (197), 112 states have internal predecessors, (197), 0 states have call successors, (0), 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) [2022-12-13 13:07:03,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:03,850 INFO L93 Difference]: Finished difference Result 176 states and 304 transitions. [2022-12-13 13:07:03,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:07:03,852 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 [2022-12-13 13:07:03,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:03,859 INFO L225 Difference]: With dead ends: 176 [2022-12-13 13:07:03,859 INFO L226 Difference]: Without dead ends: 109 [2022-12-13 13:07:03,861 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 [2022-12-13 13:07:03,864 INFO L413 NwaCegarLoop]: 194 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, 194 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 [2022-12-13 13:07:03,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:03,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-12-13 13:07:03,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-12-13 13:07:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.7592592592592593) internal successors, (190), 108 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:03,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 190 transitions. [2022-12-13 13:07:03,895 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 190 transitions. Word has length 37 [2022-12-13 13:07:03,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:03,896 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 190 transitions. [2022-12-13 13:07:03,896 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) [2022-12-13 13:07:03,896 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 190 transitions. [2022-12-13 13:07:03,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 13:07:03,898 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:03,898 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] [2022-12-13 13:07:03,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:07:03,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:03,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1022885952, now seen corresponding path program 1 times [2022-12-13 13:07:03,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:03,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425204649] [2022-12-13 13:07:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:03,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:04,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:04,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425204649] [2022-12-13 13:07:04,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425204649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:04,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:04,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:07:04,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818457546] [2022-12-13 13:07:04,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:04,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:07:04,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:04,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:07:04,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:07:04,089 INFO L87 Difference]: Start difference. First operand 109 states and 190 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) [2022-12-13 13:07:04,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:04,162 INFO L93 Difference]: Finished difference Result 229 states and 394 transitions. [2022-12-13 13:07:04,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:07:04,162 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 [2022-12-13 13:07:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:04,165 INFO L225 Difference]: With dead ends: 229 [2022-12-13 13:07:04,165 INFO L226 Difference]: Without dead ends: 167 [2022-12-13 13:07:04,166 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 [2022-12-13 13:07:04,167 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 102 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:04,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 718 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:04,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-12-13 13:07:04,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 109. [2022-12-13 13:07:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.5648148148148149) internal successors, (169), 108 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 169 transitions. [2022-12-13 13:07:04,180 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 169 transitions. Word has length 37 [2022-12-13 13:07:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:04,181 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 169 transitions. [2022-12-13 13:07:04,181 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) [2022-12-13 13:07:04,181 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 169 transitions. [2022-12-13 13:07:04,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 13:07:04,184 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:04,184 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] [2022-12-13 13:07:04,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:07:04,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:04,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:04,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1243965468, now seen corresponding path program 1 times [2022-12-13 13:07:04,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:04,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860680879] [2022-12-13 13:07:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:04,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:04,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:04,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860680879] [2022-12-13 13:07:04,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860680879] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:04,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:04,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:07:04,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100710771] [2022-12-13 13:07:04,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:04,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:07:04,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:04,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:07:04,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:04,287 INFO L87 Difference]: Start difference. First operand 109 states and 169 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:04,323 INFO L93 Difference]: Finished difference Result 216 states and 352 transitions. [2022-12-13 13:07:04,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:07:04,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-12-13 13:07:04,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:04,325 INFO L225 Difference]: With dead ends: 216 [2022-12-13 13:07:04,325 INFO L226 Difference]: Without dead ends: 158 [2022-12-13 13:07:04,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:04,327 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 75 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:04,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 367 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-12-13 13:07:04,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2022-12-13 13:07:04,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.5870967741935484) internal successors, (246), 155 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 246 transitions. [2022-12-13 13:07:04,338 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 246 transitions. Word has length 57 [2022-12-13 13:07:04,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:04,339 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 246 transitions. [2022-12-13 13:07:04,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 246 transitions. [2022-12-13 13:07:04,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 13:07:04,340 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:04,340 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] [2022-12-13 13:07:04,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:07:04,340 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:04,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:04,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1313394039, now seen corresponding path program 1 times [2022-12-13 13:07:04,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:04,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064396817] [2022-12-13 13:07:04,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:04,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:04,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:04,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064396817] [2022-12-13 13:07:04,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064396817] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:04,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:04,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:07:04,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408309686] [2022-12-13 13:07:04,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:04,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:07:04,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:04,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:07:04,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:04,405 INFO L87 Difference]: Start difference. First operand 156 states and 246 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:04,426 INFO L93 Difference]: Finished difference Result 263 states and 429 transitions. [2022-12-13 13:07:04,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:07:04,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-12-13 13:07:04,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:04,428 INFO L225 Difference]: With dead ends: 263 [2022-12-13 13:07:04,428 INFO L226 Difference]: Without dead ends: 205 [2022-12-13 13:07:04,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:04,429 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 84 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:04,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 387 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:04,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-12-13 13:07:04,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2022-12-13 13:07:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.613861386138614) internal successors, (326), 202 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 326 transitions. [2022-12-13 13:07:04,438 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 326 transitions. Word has length 59 [2022-12-13 13:07:04,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:04,439 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 326 transitions. [2022-12-13 13:07:04,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,439 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 326 transitions. [2022-12-13 13:07:04,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 13:07:04,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:04,440 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] [2022-12-13 13:07:04,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:07:04,441 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:04,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:04,441 INFO L85 PathProgramCache]: Analyzing trace with hash -597631474, now seen corresponding path program 1 times [2022-12-13 13:07:04,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:04,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440163712] [2022-12-13 13:07:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:04,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:04,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:04,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440163712] [2022-12-13 13:07:04,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440163712] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:04,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:04,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:07:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803423175] [2022-12-13 13:07:04,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:04,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:07:04,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:07:04,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:04,491 INFO L87 Difference]: Start difference. First operand 203 states and 326 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:04,514 INFO L93 Difference]: Finished difference Result 482 states and 797 transitions. [2022-12-13 13:07:04,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:07:04,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-12-13 13:07:04,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:04,517 INFO L225 Difference]: With dead ends: 482 [2022-12-13 13:07:04,518 INFO L226 Difference]: Without dead ends: 332 [2022-12-13 13:07:04,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:04,519 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 77 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:04,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 380 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:04,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-12-13 13:07:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 330. [2022-12-13 13:07:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.635258358662614) internal successors, (538), 329 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 538 transitions. [2022-12-13 13:07:04,533 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 538 transitions. Word has length 59 [2022-12-13 13:07:04,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:04,533 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 538 transitions. [2022-12-13 13:07:04,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 538 transitions. [2022-12-13 13:07:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 13:07:04,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:04,534 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] [2022-12-13 13:07:04,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:07:04,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:04,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:04,535 INFO L85 PathProgramCache]: Analyzing trace with hash 908572083, now seen corresponding path program 1 times [2022-12-13 13:07:04,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:04,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167276004] [2022-12-13 13:07:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:04,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:04,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:04,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167276004] [2022-12-13 13:07:04,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167276004] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:04,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:04,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:07:04,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30169358] [2022-12-13 13:07:04,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:04,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:07:04,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:04,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:07:04,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:04,586 INFO L87 Difference]: Start difference. First operand 330 states and 538 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:04,611 INFO L93 Difference]: Finished difference Result 603 states and 997 transitions. [2022-12-13 13:07:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:07:04,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-12-13 13:07:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:04,613 INFO L225 Difference]: With dead ends: 603 [2022-12-13 13:07:04,613 INFO L226 Difference]: Without dead ends: 453 [2022-12-13 13:07:04,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:04,614 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 78 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:04,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 379 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:04,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-12-13 13:07:04,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 451. [2022-12-13 13:07:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.6377777777777778) internal successors, (737), 450 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 737 transitions. [2022-12-13 13:07:04,631 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 737 transitions. Word has length 61 [2022-12-13 13:07:04,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:04,631 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 737 transitions. [2022-12-13 13:07:04,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,631 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 737 transitions. [2022-12-13 13:07:04,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 13:07:04,632 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:04,632 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] [2022-12-13 13:07:04,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:07:04,632 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:04,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:04,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1318448056, now seen corresponding path program 1 times [2022-12-13 13:07:04,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:04,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550556637] [2022-12-13 13:07:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:04,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:04,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:04,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550556637] [2022-12-13 13:07:04,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550556637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:04,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:04,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:07:04,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473568028] [2022-12-13 13:07:04,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:04,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:07:04,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:07:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:04,680 INFO L87 Difference]: Start difference. First operand 451 states and 737 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:04,718 INFO L93 Difference]: Finished difference Result 1172 states and 1936 transitions. [2022-12-13 13:07:04,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:07:04,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-12-13 13:07:04,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:04,722 INFO L225 Difference]: With dead ends: 1172 [2022-12-13 13:07:04,722 INFO L226 Difference]: Without dead ends: 780 [2022-12-13 13:07:04,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:04,723 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 71 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:04,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 373 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:04,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-12-13 13:07:04,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 778. [2022-12-13 13:07:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 1.6319176319176318) internal successors, (1268), 777 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1268 transitions. [2022-12-13 13:07:04,762 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1268 transitions. Word has length 61 [2022-12-13 13:07:04,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:04,763 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1268 transitions. [2022-12-13 13:07:04,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,763 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1268 transitions. [2022-12-13 13:07:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 13:07:04,764 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:04,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:07:04,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:07:04,764 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:04,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1490100131, now seen corresponding path program 1 times [2022-12-13 13:07:04,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:04,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642078828] [2022-12-13 13:07:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:04,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:04,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:04,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:04,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642078828] [2022-12-13 13:07:04,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642078828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:04,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:04,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:07:04,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100335622] [2022-12-13 13:07:04,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:04,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:07:04,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:07:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:04,825 INFO L87 Difference]: Start difference. First operand 778 states and 1268 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) [2022-12-13 13:07:04,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:04,888 INFO L93 Difference]: Finished difference Result 1469 states and 2413 transitions. [2022-12-13 13:07:04,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:07:04,889 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 [2022-12-13 13:07:04,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:04,893 INFO L225 Difference]: With dead ends: 1469 [2022-12-13 13:07:04,893 INFO L226 Difference]: Without dead ends: 1077 [2022-12-13 13:07:04,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:04,895 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 72 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:04,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 371 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:04,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2022-12-13 13:07:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1075. [2022-12-13 13:07:04,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 1.6238361266294228) internal successors, (1744), 1074 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:04,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1744 transitions. [2022-12-13 13:07:04,954 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1744 transitions. Word has length 63 [2022-12-13 13:07:04,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:04,954 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1744 transitions. [2022-12-13 13:07:04,955 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) [2022-12-13 13:07:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1744 transitions. [2022-12-13 13:07:04,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 13:07:04,955 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:04,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:07:04,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:07:04,956 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:04,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:04,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1505042206, now seen corresponding path program 1 times [2022-12-13 13:07:04,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:04,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796682293] [2022-12-13 13:07:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:04,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:05,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:05,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796682293] [2022-12-13 13:07:05,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796682293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:05,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:05,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:07:05,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163715762] [2022-12-13 13:07:05,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:05,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:07:05,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:07:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:07:05,050 INFO L87 Difference]: Start difference. First operand 1075 states and 1744 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:05,346 INFO L93 Difference]: Finished difference Result 5476 states and 9067 transitions. [2022-12-13 13:07:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:07:05,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-12-13 13:07:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:05,376 INFO L225 Difference]: With dead ends: 5476 [2022-12-13 13:07:05,376 INFO L226 Difference]: Without dead ends: 4466 [2022-12-13 13:07:05,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:07:05,379 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 703 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:05,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 832 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:07:05,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2022-12-13 13:07:05,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 2018. [2022-12-13 13:07:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2017 states have (on average 1.6192364898363907) internal successors, (3266), 2017 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3266 transitions. [2022-12-13 13:07:05,542 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3266 transitions. Word has length 63 [2022-12-13 13:07:05,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:05,543 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 3266 transitions. [2022-12-13 13:07:05,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:05,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3266 transitions. [2022-12-13 13:07:05,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 13:07:05,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:05,544 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] [2022-12-13 13:07:05,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:07:05,544 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:05,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:05,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1334500853, now seen corresponding path program 1 times [2022-12-13 13:07:05,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:05,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948167928] [2022-12-13 13:07:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:05,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:05,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:05,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948167928] [2022-12-13 13:07:05,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948167928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:05,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:05,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:07:05,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349128360] [2022-12-13 13:07:05,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:05,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:07:05,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:05,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:07:05,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:07:05,635 INFO L87 Difference]: Start difference. First operand 2018 states and 3266 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:05,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:05,873 INFO L93 Difference]: Finished difference Result 6601 states and 10825 transitions. [2022-12-13 13:07:05,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:07:05,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-12-13 13:07:05,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:05,890 INFO L225 Difference]: With dead ends: 6601 [2022-12-13 13:07:05,890 INFO L226 Difference]: Without dead ends: 4648 [2022-12-13 13:07:05,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:07:05,894 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 284 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:05,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 531 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:05,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4648 states. [2022-12-13 13:07:06,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4648 to 3314. [2022-12-13 13:07:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3314 states, 3313 states have (on average 1.620887413220646) internal successors, (5370), 3313 states have internal predecessors, (5370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:06,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 5370 transitions. [2022-12-13 13:07:06,036 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 5370 transitions. Word has length 64 [2022-12-13 13:07:06,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:06,036 INFO L495 AbstractCegarLoop]: Abstraction has 3314 states and 5370 transitions. [2022-12-13 13:07:06,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 5370 transitions. [2022-12-13 13:07:06,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 13:07:06,037 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:06,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:07:06,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 13:07:06,037 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:06,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:06,038 INFO L85 PathProgramCache]: Analyzing trace with hash -173681863, now seen corresponding path program 1 times [2022-12-13 13:07:06,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:06,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47761145] [2022-12-13 13:07:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:06,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:06,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:06,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47761145] [2022-12-13 13:07:06,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47761145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:06,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:06,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:07:06,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535842366] [2022-12-13 13:07:06,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:06,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:07:06,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:06,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:07:06,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:07:06,085 INFO L87 Difference]: Start difference. First operand 3314 states and 5370 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:06,460 INFO L93 Difference]: Finished difference Result 10669 states and 17369 transitions. [2022-12-13 13:07:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:07:06,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-13 13:07:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:06,486 INFO L225 Difference]: With dead ends: 10669 [2022-12-13 13:07:06,486 INFO L226 Difference]: Without dead ends: 7420 [2022-12-13 13:07:06,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:07:06,492 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 282 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:06,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 533 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7420 states. [2022-12-13 13:07:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7420 to 5338. [2022-12-13 13:07:06,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 1.609893198426082) internal successors, (8592), 5337 states have internal predecessors, (8592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:06,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 8592 transitions. [2022-12-13 13:07:06,734 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 8592 transitions. Word has length 65 [2022-12-13 13:07:06,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:06,734 INFO L495 AbstractCegarLoop]: Abstraction has 5338 states and 8592 transitions. [2022-12-13 13:07:06,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 8592 transitions. [2022-12-13 13:07:06,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 13:07:06,735 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:06,735 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] [2022-12-13 13:07:06,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:07:06,735 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1620972802, now seen corresponding path program 1 times [2022-12-13 13:07:06,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:06,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350085484] [2022-12-13 13:07:06,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:06,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:06,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:06,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350085484] [2022-12-13 13:07:06,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350085484] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:06,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:06,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:07:06,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873724636] [2022-12-13 13:07:06,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:06,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:07:06,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:06,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:07:06,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:07:06,795 INFO L87 Difference]: Start difference. First operand 5338 states and 8592 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:07,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:07,291 INFO L93 Difference]: Finished difference Result 16865 states and 27249 transitions. [2022-12-13 13:07:07,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:07:07,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-12-13 13:07:07,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:07,334 INFO L225 Difference]: With dead ends: 16865 [2022-12-13 13:07:07,334 INFO L226 Difference]: Without dead ends: 11592 [2022-12-13 13:07:07,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:07:07,343 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 280 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:07,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 540 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11592 states. [2022-12-13 13:07:07,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11592 to 8422. [2022-12-13 13:07:07,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8422 states, 8421 states have (on average 1.598622491390571) internal successors, (13462), 8421 states have internal predecessors, (13462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 13462 transitions. [2022-12-13 13:07:07,780 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 13462 transitions. Word has length 66 [2022-12-13 13:07:07,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:07,780 INFO L495 AbstractCegarLoop]: Abstraction has 8422 states and 13462 transitions. [2022-12-13 13:07:07,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:07,781 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 13462 transitions. [2022-12-13 13:07:07,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 13:07:07,781 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:07,781 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] [2022-12-13 13:07:07,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 13:07:07,782 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:07,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:07,782 INFO L85 PathProgramCache]: Analyzing trace with hash 849177530, now seen corresponding path program 1 times [2022-12-13 13:07:07,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:07,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602787369] [2022-12-13 13:07:07,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:07,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:07,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:07,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602787369] [2022-12-13 13:07:07,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602787369] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:07,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:07,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:07:07,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773665450] [2022-12-13 13:07:07,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:07,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:07:07,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:07,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:07:07,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:07:07,928 INFO L87 Difference]: Start difference. First operand 8422 states and 13462 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:08,366 INFO L93 Difference]: Finished difference Result 16781 states and 26838 transitions. [2022-12-13 13:07:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:07:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-12-13 13:07:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:08,376 INFO L225 Difference]: With dead ends: 16781 [2022-12-13 13:07:08,377 INFO L226 Difference]: Without dead ends: 8424 [2022-12-13 13:07:08,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:07:08,381 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 71 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:08,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 581 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:07:08,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8424 states. [2022-12-13 13:07:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8424 to 8422. [2022-12-13 13:07:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8422 states, 8421 states have (on average 1.583778648616554) internal successors, (13337), 8421 states have internal predecessors, (13337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 13337 transitions. [2022-12-13 13:07:08,685 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 13337 transitions. Word has length 68 [2022-12-13 13:07:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:08,685 INFO L495 AbstractCegarLoop]: Abstraction has 8422 states and 13337 transitions. [2022-12-13 13:07:08,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 13337 transitions. [2022-12-13 13:07:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 13:07:08,685 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:08,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:07:08,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:07:08,686 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:08,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:08,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2101680228, now seen corresponding path program 1 times [2022-12-13 13:07:08,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:08,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516698043] [2022-12-13 13:07:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:08,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:08,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:08,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516698043] [2022-12-13 13:07:08,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516698043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:08,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:08,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:07:08,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540495119] [2022-12-13 13:07:08,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:08,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:07:08,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:08,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:07:08,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:07:08,812 INFO L87 Difference]: Start difference. First operand 8422 states and 13337 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:09,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:09,628 INFO L93 Difference]: Finished difference Result 24139 states and 38372 transitions. [2022-12-13 13:07:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:07:09,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-12-13 13:07:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:09,648 INFO L225 Difference]: With dead ends: 24139 [2022-12-13 13:07:09,648 INFO L226 Difference]: Without dead ends: 15782 [2022-12-13 13:07:09,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:07:09,653 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 205 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:09,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 447 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:09,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15782 states. [2022-12-13 13:07:10,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15782 to 15780. [2022-12-13 13:07:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15780 states, 15779 states have (on average 1.5673997084732874) internal successors, (24732), 15779 states have internal predecessors, (24732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15780 states to 15780 states and 24732 transitions. [2022-12-13 13:07:10,264 INFO L78 Accepts]: Start accepts. Automaton has 15780 states and 24732 transitions. Word has length 71 [2022-12-13 13:07:10,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:10,264 INFO L495 AbstractCegarLoop]: Abstraction has 15780 states and 24732 transitions. [2022-12-13 13:07:10,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 15780 states and 24732 transitions. [2022-12-13 13:07:10,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 13:07:10,265 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:10,265 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] [2022-12-13 13:07:10,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:07:10,265 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:10,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:10,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1156153373, now seen corresponding path program 1 times [2022-12-13 13:07:10,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:10,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343791430] [2022-12-13 13:07:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:10,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:10,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:10,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343791430] [2022-12-13 13:07:10,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343791430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:10,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:10,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:07:10,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752005316] [2022-12-13 13:07:10,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:10,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:07:10,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:10,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:07:10,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:07:10,424 INFO L87 Difference]: Start difference. First operand 15780 states and 24732 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2022-12-13 13:07:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:11,933 INFO L93 Difference]: Finished difference Result 31384 states and 48483 transitions. [2022-12-13 13:07:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:07:11,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 [2022-12-13 13:07:11,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:11,970 INFO L225 Difference]: With dead ends: 31384 [2022-12-13 13:07:11,970 INFO L226 Difference]: Without dead ends: 31382 [2022-12-13 13:07:11,975 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 [2022-12-13 13:07:11,975 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 242 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 713 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 [2022-12-13 13:07:11,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 713 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31382 states. [2022-12-13 13:07:12,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31382 to 16866. [2022-12-13 13:07:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16866 states, 16865 states have (on average 1.5303290839015713) internal successors, (25809), 16865 states have internal predecessors, (25809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16866 states to 16866 states and 25809 transitions. [2022-12-13 13:07:12,920 INFO L78 Accepts]: Start accepts. Automaton has 16866 states and 25809 transitions. Word has length 72 [2022-12-13 13:07:12,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:12,921 INFO L495 AbstractCegarLoop]: Abstraction has 16866 states and 25809 transitions. [2022-12-13 13:07:12,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2022-12-13 13:07:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 16866 states and 25809 transitions. [2022-12-13 13:07:12,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 13:07:12,923 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:12,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:07:12,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 13:07:12,923 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:12,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:12,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1615200262, now seen corresponding path program 1 times [2022-12-13 13:07:12,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:12,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566121156] [2022-12-13 13:07:12,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:12,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:12,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:12,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566121156] [2022-12-13 13:07:12,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566121156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:12,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:12,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:07:12,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917648563] [2022-12-13 13:07:12,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:12,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:07:12,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:12,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:07:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:12,978 INFO L87 Difference]: Start difference. First operand 16866 states and 25809 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:14,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:14,777 INFO L93 Difference]: Finished difference Result 50355 states and 76986 transitions. [2022-12-13 13:07:14,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:07:14,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-12-13 13:07:14,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:14,816 INFO L225 Difference]: With dead ends: 50355 [2022-12-13 13:07:14,816 INFO L226 Difference]: Without dead ends: 33554 [2022-12-13 13:07:14,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:14,836 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 133 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:14,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 417 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:14,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33554 states. [2022-12-13 13:07:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33554 to 33552. [2022-12-13 13:07:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33552 states, 33551 states have (on average 1.5154242794551578) internal successors, (50844), 33551 states have internal predecessors, (50844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33552 states to 33552 states and 50844 transitions. [2022-12-13 13:07:17,196 INFO L78 Accepts]: Start accepts. Automaton has 33552 states and 50844 transitions. Word has length 97 [2022-12-13 13:07:17,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:17,196 INFO L495 AbstractCegarLoop]: Abstraction has 33552 states and 50844 transitions. [2022-12-13 13:07:17,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:17,197 INFO L276 IsEmpty]: Start isEmpty. Operand 33552 states and 50844 transitions. [2022-12-13 13:07:17,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 13:07:17,199 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:17,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:07:17,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 13:07:17,200 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:17,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:17,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1592111147, now seen corresponding path program 1 times [2022-12-13 13:07:17,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:17,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623095340] [2022-12-13 13:07:17,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:17,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 13:07:17,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:17,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623095340] [2022-12-13 13:07:17,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623095340] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:17,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:17,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:07:17,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232258095] [2022-12-13 13:07:17,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:17,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:07:17,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:17,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:07:17,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:17,256 INFO L87 Difference]: Start difference. First operand 33552 states and 50844 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:20,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:20,849 INFO L93 Difference]: Finished difference Result 100174 states and 151646 transitions. [2022-12-13 13:07:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:07:20,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-12-13 13:07:20,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:20,925 INFO L225 Difference]: With dead ends: 100174 [2022-12-13 13:07:20,925 INFO L226 Difference]: Without dead ends: 66729 [2022-12-13 13:07:20,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:20,948 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 102 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:20,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 383 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:20,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66729 states. [2022-12-13 13:07:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66729 to 66727. [2022-12-13 13:07:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66727 states, 66726 states have (on average 1.500239786589935) internal successors, (100105), 66726 states have internal predecessors, (100105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:25,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66727 states to 66727 states and 100105 transitions. [2022-12-13 13:07:25,333 INFO L78 Accepts]: Start accepts. Automaton has 66727 states and 100105 transitions. Word has length 97 [2022-12-13 13:07:25,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:25,334 INFO L495 AbstractCegarLoop]: Abstraction has 66727 states and 100105 transitions. [2022-12-13 13:07:25,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:25,334 INFO L276 IsEmpty]: Start isEmpty. Operand 66727 states and 100105 transitions. [2022-12-13 13:07:25,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 13:07:25,338 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:25,338 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] [2022-12-13 13:07:25,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 13:07:25,338 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1781894600, now seen corresponding path program 1 times [2022-12-13 13:07:25,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:25,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637943884] [2022-12-13 13:07:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:07:25,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:25,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637943884] [2022-12-13 13:07:25,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637943884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:25,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:25,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:07:25,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974141660] [2022-12-13 13:07:25,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:25,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:07:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:07:25,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:07:25,417 INFO L87 Difference]: Start difference. First operand 66727 states and 100105 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:32,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:32,757 INFO L93 Difference]: Finished difference Result 165215 states and 249325 transitions. [2022-12-13 13:07:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:07:32,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-12-13 13:07:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:32,926 INFO L225 Difference]: With dead ends: 165215 [2022-12-13 13:07:32,926 INFO L226 Difference]: Without dead ends: 132333 [2022-12-13 13:07:32,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:07:32,952 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 350 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:32,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 710 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:33,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132333 states. [2022-12-13 13:07:39,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132333 to 103023. [2022-12-13 13:07:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103023 states, 103022 states have (on average 1.4976704004969812) internal successors, (154293), 103022 states have internal predecessors, (154293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:39,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103023 states to 103023 states and 154293 transitions. [2022-12-13 13:07:39,482 INFO L78 Accepts]: Start accepts. Automaton has 103023 states and 154293 transitions. Word has length 97 [2022-12-13 13:07:39,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:39,482 INFO L495 AbstractCegarLoop]: Abstraction has 103023 states and 154293 transitions. [2022-12-13 13:07:39,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:39,482 INFO L276 IsEmpty]: Start isEmpty. Operand 103023 states and 154293 transitions. [2022-12-13 13:07:39,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 13:07:39,486 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:39,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:07:39,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 13:07:39,487 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:39,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:39,487 INFO L85 PathProgramCache]: Analyzing trace with hash 459682239, now seen corresponding path program 1 times [2022-12-13 13:07:39,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:39,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418810224] [2022-12-13 13:07:39,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:39,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:07:39,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:39,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418810224] [2022-12-13 13:07:39,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418810224] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:39,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:39,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:07:39,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040983880] [2022-12-13 13:07:39,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:39,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:07:39,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:39,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:07:39,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:39,529 INFO L87 Difference]: Start difference. First operand 103023 states and 154293 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:45,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:07:45,253 INFO L93 Difference]: Finished difference Result 154812 states and 231346 transitions. [2022-12-13 13:07:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:07:45,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-12-13 13:07:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:07:45,395 INFO L225 Difference]: With dead ends: 154812 [2022-12-13 13:07:45,395 INFO L226 Difference]: Without dead ends: 103139 [2022-12-13 13:07:45,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:07:45,435 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 123 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:07:45,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 472 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:07:45,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103139 states. [2022-12-13 13:07:51,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103139 to 103137. [2022-12-13 13:07:51,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103137 states, 103136 states have (on average 1.484961604095563) internal successors, (153153), 103136 states have internal predecessors, (153153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103137 states to 103137 states and 153153 transitions. [2022-12-13 13:07:52,035 INFO L78 Accepts]: Start accepts. Automaton has 103137 states and 153153 transitions. Word has length 97 [2022-12-13 13:07:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:07:52,035 INFO L495 AbstractCegarLoop]: Abstraction has 103137 states and 153153 transitions. [2022-12-13 13:07:52,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:07:52,036 INFO L276 IsEmpty]: Start isEmpty. Operand 103137 states and 153153 transitions. [2022-12-13 13:07:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 13:07:52,039 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:07:52,039 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:07:52,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 13:07:52,040 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:07:52,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:07:52,040 INFO L85 PathProgramCache]: Analyzing trace with hash -349664387, now seen corresponding path program 1 times [2022-12-13 13:07:52,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:07:52,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167925392] [2022-12-13 13:07:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:07:52,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:07:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:07:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:07:52,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:07:52,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167925392] [2022-12-13 13:07:52,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167925392] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:07:52,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:07:52,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:07:52,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316655907] [2022-12-13 13:07:52,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:07:52,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:07:52,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:07:52,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:07:52,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:07:52,117 INFO L87 Difference]: Start difference. First operand 103137 states and 153153 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:08:01,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:08:01,013 INFO L93 Difference]: Finished difference Result 185465 states and 277473 transitions. [2022-12-13 13:08:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:08:01,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-12-13 13:08:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:08:01,203 INFO L225 Difference]: With dead ends: 185465 [2022-12-13 13:08:01,203 INFO L226 Difference]: Without dead ends: 153663 [2022-12-13 13:08:01,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:08:01,235 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 346 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:08:01,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 696 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:08:01,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153663 states. [2022-12-13 13:08:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153663 to 140361. [2022-12-13 13:08:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140361 states, 140360 states have (on average 1.4875249358791678) internal successors, (208789), 140360 states have internal predecessors, (208789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:08:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140361 states to 140361 states and 208789 transitions. [2022-12-13 13:08:10,268 INFO L78 Accepts]: Start accepts. Automaton has 140361 states and 208789 transitions. Word has length 97 [2022-12-13 13:08:10,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:08:10,268 INFO L495 AbstractCegarLoop]: Abstraction has 140361 states and 208789 transitions. [2022-12-13 13:08:10,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:08:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 140361 states and 208789 transitions. [2022-12-13 13:08:10,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 13:08:10,272 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:08:10,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:08:10,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 13:08:10,272 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:08:10,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:08:10,272 INFO L85 PathProgramCache]: Analyzing trace with hash -716092141, now seen corresponding path program 1 times [2022-12-13 13:08:10,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:08:10,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584602370] [2022-12-13 13:08:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:08:10,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:08:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:08:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:08:10,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:08:10,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584602370] [2022-12-13 13:08:10,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584602370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:08:10,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:08:10,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:08:10,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089842226] [2022-12-13 13:08:10,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:08:10,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:08:10,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:08:10,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:08:10,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:08:10,323 INFO L87 Difference]: Start difference. First operand 140361 states and 208789 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:08:27,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:08:27,797 INFO L93 Difference]: Finished difference Result 419287 states and 623004 transitions. [2022-12-13 13:08:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:08:27,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-12-13 13:08:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:08:28,213 INFO L225 Difference]: With dead ends: 419287 [2022-12-13 13:08:28,213 INFO L226 Difference]: Without dead ends: 279237 [2022-12-13 13:08:28,289 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 [2022-12-13 13:08:28,290 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 117 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:08:28,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 406 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:08:28,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279237 states. [2022-12-13 13:08:47,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279237 to 279235. [2022-12-13 13:08:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279235 states, 279234 states have (on average 1.4724353051562489) internal successors, (411154), 279234 states have internal predecessors, (411154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:08:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279235 states to 279235 states and 411154 transitions. [2022-12-13 13:08:47,968 INFO L78 Accepts]: Start accepts. Automaton has 279235 states and 411154 transitions. Word has length 97 [2022-12-13 13:08:47,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:08:47,968 INFO L495 AbstractCegarLoop]: Abstraction has 279235 states and 411154 transitions. [2022-12-13 13:08:47,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:08:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 279235 states and 411154 transitions. [2022-12-13 13:08:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 13:08:47,975 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:08:47,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:08:47,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 13:08:47,976 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:08:47,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:08:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash -56793773, now seen corresponding path program 1 times [2022-12-13 13:08:47,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:08:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695723651] [2022-12-13 13:08:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:08:47,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:08:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:08:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:08:48,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:08:48,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695723651] [2022-12-13 13:08:48,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695723651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:08:48,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:08:48,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:08:48,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748828489] [2022-12-13 13:08:48,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:08:48,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:08:48,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:08:48,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:08:48,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:08:48,040 INFO L87 Difference]: Start difference. First operand 279235 states and 411154 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:09:08,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:09:08,183 INFO L93 Difference]: Finished difference Result 394443 states and 584262 transitions. [2022-12-13 13:09:08,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:09:08,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-12-13 13:09:08,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:09:08,679 INFO L225 Difference]: With dead ends: 394443 [2022-12-13 13:09:08,679 INFO L226 Difference]: Without dead ends: 331241 [2022-12-13 13:09:08,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:09:08,739 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 355 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:09:08,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 711 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:09:08,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331241 states. [2022-12-13 13:09:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331241 to 320547. [2022-12-13 13:09:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320547 states, 320546 states have (on average 1.4749396342490626) internal successors, (472786), 320546 states have internal predecessors, (472786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:09:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320547 states to 320547 states and 472786 transitions. [2022-12-13 13:09:30,673 INFO L78 Accepts]: Start accepts. Automaton has 320547 states and 472786 transitions. Word has length 97 [2022-12-13 13:09:30,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:09:30,673 INFO L495 AbstractCegarLoop]: Abstraction has 320547 states and 472786 transitions. [2022-12-13 13:09:30,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:09:30,673 INFO L276 IsEmpty]: Start isEmpty. Operand 320547 states and 472786 transitions. [2022-12-13 13:09:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 13:09:30,681 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:09:30,681 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-12-13 13:09:30,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 13:09:30,681 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:09:30,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:09:30,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1776292325, now seen corresponding path program 1 times [2022-12-13 13:09:30,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:09:30,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721448448] [2022-12-13 13:09:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:09:30,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:09:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:09:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:09:30,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:09:30,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721448448] [2022-12-13 13:09:30,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721448448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:09:30,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:09:30,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:09:30,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043482619] [2022-12-13 13:09:30,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:09:30,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:09:30,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:09:30,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:09:30,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:09:30,739 INFO L87 Difference]: Start difference. First operand 320547 states and 472786 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:09:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:09:56,721 INFO L93 Difference]: Finished difference Result 525329 states and 780957 transitions. [2022-12-13 13:09:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:09:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 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 98 [2022-12-13 13:09:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:09:57,457 INFO L225 Difference]: With dead ends: 525329 [2022-12-13 13:09:57,457 INFO L226 Difference]: Without dead ends: 417679 [2022-12-13 13:09:57,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:09:57,684 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 149 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:09:57,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 495 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:09:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417679 states. [2022-12-13 13:10:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417679 to 406987. [2022-12-13 13:10:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406987 states, 406986 states have (on average 1.476085172462935) internal successors, (600746), 406986 states have internal predecessors, (600746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:10:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406987 states to 406987 states and 600746 transitions. [2022-12-13 13:10:26,283 INFO L78 Accepts]: Start accepts. Automaton has 406987 states and 600746 transitions. Word has length 98 [2022-12-13 13:10:26,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:10:26,283 INFO L495 AbstractCegarLoop]: Abstraction has 406987 states and 600746 transitions. [2022-12-13 13:10:26,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:10:26,283 INFO L276 IsEmpty]: Start isEmpty. Operand 406987 states and 600746 transitions. [2022-12-13 13:10:26,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 13:10:26,291 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:10:26,291 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-12-13 13:10:26,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 13:10:26,291 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:10:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:10:26,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2095973145, now seen corresponding path program 1 times [2022-12-13 13:10:26,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:10:26,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321057264] [2022-12-13 13:10:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:10:26,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:10:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:10:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:10:26,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:10:26,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321057264] [2022-12-13 13:10:26,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321057264] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:10:26,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:10:26,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:10:26,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749248999] [2022-12-13 13:10:26,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:10:26,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:10:26,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:10:26,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:10:26,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:10:26,330 INFO L87 Difference]: Start difference. First operand 406987 states and 600746 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:11:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:11:11,066 INFO L93 Difference]: Finished difference Result 883743 states and 1311440 transitions. [2022-12-13 13:11:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:11:11,067 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 98 [2022-12-13 13:11:11,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:11:12,229 INFO L225 Difference]: With dead ends: 883743 [2022-12-13 13:11:12,229 INFO L226 Difference]: Without dead ends: 690477 [2022-12-13 13:11:12,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:11:12,553 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 60 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:11:12,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 303 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:11:13,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690477 states. [2022-12-13 13:12:00,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690477 to 688267. [2022-12-13 13:12:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688267 states, 688266 states have (on average 1.4765192527307756) internal successors, (1016238), 688266 states have internal predecessors, (1016238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:12:02,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688267 states to 688267 states and 1016238 transitions. [2022-12-13 13:12:02,517 INFO L78 Accepts]: Start accepts. Automaton has 688267 states and 1016238 transitions. Word has length 98 [2022-12-13 13:12:02,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:12:02,518 INFO L495 AbstractCegarLoop]: Abstraction has 688267 states and 1016238 transitions. [2022-12-13 13:12:02,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:12:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 688267 states and 1016238 transitions. [2022-12-13 13:12:02,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 13:12:02,527 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:12:02,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:12:02,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 13:12:02,527 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:12:02,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:12:02,527 INFO L85 PathProgramCache]: Analyzing trace with hash 393030947, now seen corresponding path program 1 times [2022-12-13 13:12:02,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:12:02,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495667349] [2022-12-13 13:12:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:12:02,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:12:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:12:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:12:02,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:12:02,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495667349] [2022-12-13 13:12:02,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495667349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:12:02,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:12:02,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:12:02,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270924959] [2022-12-13 13:12:02,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:12:02,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:12:02,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:12:02,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:12:02,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:12:02,586 INFO L87 Difference]: Start difference. First operand 688267 states and 1016238 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:12:44,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:12:44,019 INFO L93 Difference]: Finished difference Result 1277467 states and 1889288 transitions. [2022-12-13 13:12:44,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:12:44,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 13:12:44,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:12:45,033 INFO L225 Difference]: With dead ends: 1277467 [2022-12-13 13:12:45,033 INFO L226 Difference]: Without dead ends: 589853 [2022-12-13 13:12:45,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:12:45,329 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 61 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:12:45,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 353 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:12:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589853 states. [2022-12-13 13:13:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589853 to 588647. [2022-12-13 13:13:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588647 states, 588646 states have (on average 1.4692735532051522) internal successors, (864882), 588646 states have internal predecessors, (864882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:13:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588647 states to 588647 states and 864882 transitions. [2022-12-13 13:13:29,180 INFO L78 Accepts]: Start accepts. Automaton has 588647 states and 864882 transitions. Word has length 98 [2022-12-13 13:13:29,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:13:29,180 INFO L495 AbstractCegarLoop]: Abstraction has 588647 states and 864882 transitions. [2022-12-13 13:13:29,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:13:29,180 INFO L276 IsEmpty]: Start isEmpty. Operand 588647 states and 864882 transitions. [2022-12-13 13:13:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 13:13:29,187 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:13:29,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:13:29,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 13:13:29,188 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:13:29,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:13:29,188 INFO L85 PathProgramCache]: Analyzing trace with hash 387526973, now seen corresponding path program 1 times [2022-12-13 13:13:29,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:13:29,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265294457] [2022-12-13 13:13:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:13:29,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:13:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:13:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:13:29,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:13:29,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265294457] [2022-12-13 13:13:29,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265294457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:13:29,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:13:29,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:13:29,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202069579] [2022-12-13 13:13:29,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:13:29,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:13:29,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:13:29,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:13:29,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:13:29,241 INFO L87 Difference]: Start difference. First operand 588647 states and 864882 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:13:48,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:13:48,383 INFO L93 Difference]: Finished difference Result 838663 states and 1233460 transitions. [2022-12-13 13:13:48,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:13:48,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 13:13:48,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:13:48,800 INFO L225 Difference]: With dead ends: 838663 [2022-12-13 13:13:48,800 INFO L226 Difference]: Without dead ends: 250677 [2022-12-13 13:13:48,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:13:48,991 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 48 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:13:48,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 336 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:13:49,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250677 states. [2022-12-13 13:14:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250677 to 250291. [2022-12-13 13:14:08,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250291 states, 250290 states have (on average 1.4615605897159296) internal successors, (365814), 250290 states have internal predecessors, (365814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:14:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250291 states to 250291 states and 365814 transitions. [2022-12-13 13:14:09,006 INFO L78 Accepts]: Start accepts. Automaton has 250291 states and 365814 transitions. Word has length 98 [2022-12-13 13:14:09,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:14:09,006 INFO L495 AbstractCegarLoop]: Abstraction has 250291 states and 365814 transitions. [2022-12-13 13:14:09,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:14:09,006 INFO L276 IsEmpty]: Start isEmpty. Operand 250291 states and 365814 transitions. [2022-12-13 13:14:09,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 13:14:09,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:14:09,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:14:09,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 13:14:09,012 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:14:09,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:14:09,012 INFO L85 PathProgramCache]: Analyzing trace with hash -666486876, now seen corresponding path program 1 times [2022-12-13 13:14:09,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:14:09,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670593624] [2022-12-13 13:14:09,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:14:09,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:14:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:14:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:14:09,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:14:09,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670593624] [2022-12-13 13:14:09,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670593624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:14:09,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:14:09,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:14:09,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68033043] [2022-12-13 13:14:09,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:14:09,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:14:09,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:14:09,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:14:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:14:09,131 INFO L87 Difference]: Start difference. First operand 250291 states and 365814 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:14:46,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:14:46,450 INFO L93 Difference]: Finished difference Result 623241 states and 910013 transitions. [2022-12-13 13:14:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:14:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 13:14:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:14:47,271 INFO L225 Difference]: With dead ends: 623241 [2022-12-13 13:14:47,271 INFO L226 Difference]: Without dead ends: 464007 [2022-12-13 13:14:47,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:14:47,428 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 229 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:14:47,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 497 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:14:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464007 states. [2022-12-13 13:15:18,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464007 to 394419. [2022-12-13 13:15:18,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394419 states, 394418 states have (on average 1.4581028249217836) internal successors, (575102), 394418 states have internal predecessors, (575102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:15:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394419 states to 394419 states and 575102 transitions. [2022-12-13 13:15:19,604 INFO L78 Accepts]: Start accepts. Automaton has 394419 states and 575102 transitions. Word has length 98 [2022-12-13 13:15:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:15:19,604 INFO L495 AbstractCegarLoop]: Abstraction has 394419 states and 575102 transitions. [2022-12-13 13:15:19,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:15:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 394419 states and 575102 transitions. [2022-12-13 13:15:19,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 13:15:19,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:15:19,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:15:19,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 13:15:19,607 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:15:19,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:15:19,608 INFO L85 PathProgramCache]: Analyzing trace with hash 746908258, now seen corresponding path program 1 times [2022-12-13 13:15:19,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:15:19,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711402819] [2022-12-13 13:15:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:15:19,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:15:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:15:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 13:15:19,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:15:19,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711402819] [2022-12-13 13:15:19,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711402819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:15:19,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:15:19,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:15:19,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445409574] [2022-12-13 13:15:19,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:15:19,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:15:19,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:15:19,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:15:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:15:19,942 INFO L87 Difference]: Start difference. First operand 394419 states and 575102 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:16:20,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:16:20,562 INFO L93 Difference]: Finished difference Result 975341 states and 1424253 transitions. [2022-12-13 13:16:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:16:20,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 13:16:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:16:21,930 INFO L225 Difference]: With dead ends: 975341 [2022-12-13 13:16:21,930 INFO L226 Difference]: Without dead ends: 735407 [2022-12-13 13:16:22,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:16:22,116 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 238 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:16:22,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 490 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:16:22,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735407 states. [2022-12-13 13:17:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735407 to 622519. [2022-12-13 13:17:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622519 states, 622518 states have (on average 1.4556141348523255) internal successors, (906146), 622518 states have internal predecessors, (906146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:17:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622519 states to 622519 states and 906146 transitions. [2022-12-13 13:17:19,634 INFO L78 Accepts]: Start accepts. Automaton has 622519 states and 906146 transitions. Word has length 98 [2022-12-13 13:17:19,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:17:19,634 INFO L495 AbstractCegarLoop]: Abstraction has 622519 states and 906146 transitions. [2022-12-13 13:17:19,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:17:19,634 INFO L276 IsEmpty]: Start isEmpty. Operand 622519 states and 906146 transitions. [2022-12-13 13:17:19,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 13:17:19,636 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:17:19,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:17:19,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 13:17:19,637 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:17:19,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:17:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1142512329, now seen corresponding path program 1 times [2022-12-13 13:17:19,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:17:19,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710491537] [2022-12-13 13:17:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:17:19,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:17:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:17:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:17:19,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:17:19,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710491537] [2022-12-13 13:17:19,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710491537] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:17:19,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:17:19,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:17:19,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538184516] [2022-12-13 13:17:19,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:17:19,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:17:19,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:17:19,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:17:19,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:17:19,665 INFO L87 Difference]: Start difference. First operand 622519 states and 906146 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)