./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/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_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/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_60f53ddc-5cc3-4d15-aa55-5880101d0855/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 740290dda5575272bb23cb8f59f476bbd4d0eb4eae1c4b42019e214336dbab38 --- 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 18:31:03,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:31:03,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:31:03,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:31:03,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:31:03,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:31:03,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:31:03,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:31:03,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:31:03,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:31:03,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:31:03,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:31:03,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:31:03,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:31:03,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:31:03,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:31:03,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:31:03,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:31:03,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:31:03,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:31:03,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:31:03,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:31:03,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:31:03,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:31:03,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:31:03,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:31:03,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:31:03,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:31:03,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:31:03,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:31:03,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:31:03,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:31:03,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:31:03,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:31:03,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:31:03,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:31:03,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:31:03,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:31:03,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:31:03,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:31:03,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:31:03,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:31:03,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:31:03,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:31:03,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:31:03,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:31:03,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:31:03,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:31:03,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:31:03,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:31:03,360 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:31:03,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:31:03,360 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:31:03,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:31:03,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:31:03,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:31:03,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:31:03,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:31:03,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:31:03,362 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:31:03,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:31:03,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:31:03,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:31:03,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:31:03,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:31:03,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:31:03,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:31:03,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:31:03,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:31:03,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:31:03,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:31:03,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:31:03,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:31:03,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:31:03,364 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:31:03,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:31:03,364 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:31:03,364 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_60f53ddc-5cc3-4d15-aa55-5880101d0855/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 740290dda5575272bb23cb8f59f476bbd4d0eb4eae1c4b42019e214336dbab38 [2022-12-13 18:31:03,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:31:03,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:31:03,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:31:03,598 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:31:03,598 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:31:03,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-12-13 18:31:06,101 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:31:06,265 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:31:06,266 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-12-13 18:31:06,272 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/data/613eba7a8/fab734450aeb4925871025f433a29c1b/FLAG0595fcb8c [2022-12-13 18:31:06,671 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/data/613eba7a8/fab734450aeb4925871025f433a29c1b [2022-12-13 18:31:06,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:31:06,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:31:06,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:31:06,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:31:06,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:31:06,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c9cdf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06, skipping insertion in model container [2022-12-13 18:31:06,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:31:06,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:31:06,836 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_60f53ddc-5cc3-4d15-aa55-5880101d0855/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2022-12-13 18:31:06,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:31:06,870 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:31:06,900 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_60f53ddc-5cc3-4d15-aa55-5880101d0855/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2022-12-13 18:31:06,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:31:06,928 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:31:06,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06 WrapperNode [2022-12-13 18:31:06,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:31:06,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:31:06,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:31:06,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:31:06,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,962 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 524 [2022-12-13 18:31:06,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:31:06,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:31:06,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:31:06,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:31:06,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,980 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:31:06,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:31:06,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:31:06,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:31:06,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06" (1/1) ... [2022-12-13 18:31:06,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:31:06,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:31:07,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:31:07,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:31:07,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:31:07,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:31:07,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:31:07,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:31:07,126 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:31:07,127 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:31:07,482 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:31:07,490 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:31:07,491 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:31:07,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:31:07 BoogieIcfgContainer [2022-12-13 18:31:07,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:31:07,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:31:07,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:31:07,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:31:07,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:31:06" (1/3) ... [2022-12-13 18:31:07,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e41ce50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:31:07, skipping insertion in model container [2022-12-13 18:31:07,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:06" (2/3) ... [2022-12-13 18:31:07,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e41ce50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:31:07, skipping insertion in model container [2022-12-13 18:31:07,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:31:07" (3/3) ... [2022-12-13 18:31:07,503 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-12-13 18:31:07,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:31:07,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:31:07,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:31:07,559 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;@63be85a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:31:07,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:31:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 135 states have internal predecessors, (228), 0 states have call successors, (0), 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 18:31:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 18:31:07,569 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:07,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:07,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:07,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:07,574 INFO L85 PathProgramCache]: Analyzing trace with hash -793823884, now seen corresponding path program 1 times [2022-12-13 18:31:07,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:07,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607276852] [2022-12-13 18:31:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:07,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:07,880 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 18:31:07,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:07,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607276852] [2022-12-13 18:31:07,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607276852] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:07,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:07,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:07,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385739438] [2022-12-13 18:31:07,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:07,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:31:07,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:31:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:31:07,913 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 135 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:31:07,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:07,994 INFO L93 Difference]: Finished difference Result 322 states and 522 transitions. [2022-12-13 18:31:07,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:31:07,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-13 18:31:07,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:08,004 INFO L225 Difference]: With dead ends: 322 [2022-12-13 18:31:08,004 INFO L226 Difference]: Without dead ends: 215 [2022-12-13 18:31:08,006 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 18:31:08,009 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 174 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:08,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 504 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:31:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-12-13 18:31:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2022-12-13 18:31:08,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.5047169811320755) internal successors, (319), 212 states have internal predecessors, (319), 0 states have call successors, (0), 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 18:31:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 319 transitions. [2022-12-13 18:31:08,052 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 319 transitions. Word has length 60 [2022-12-13 18:31:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:08,052 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 319 transitions. [2022-12-13 18:31:08,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:31:08,052 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 319 transitions. [2022-12-13 18:31:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 18:31:08,053 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:08,054 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 18:31:08,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:31:08,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:08,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:08,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1200786689, now seen corresponding path program 1 times [2022-12-13 18:31:08,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:08,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364568161] [2022-12-13 18:31:08,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:08,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:08,132 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 18:31:08,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:08,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364568161] [2022-12-13 18:31:08,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364568161] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:08,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:08,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:08,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851523313] [2022-12-13 18:31:08,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:08,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:31:08,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:08,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:31:08,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:31:08,134 INFO L87 Difference]: Start difference. First operand 213 states and 319 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 18:31:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:08,181 INFO L93 Difference]: Finished difference Result 537 states and 835 transitions. [2022-12-13 18:31:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:31:08,182 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 18:31:08,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:08,183 INFO L225 Difference]: With dead ends: 537 [2022-12-13 18:31:08,183 INFO L226 Difference]: Without dead ends: 359 [2022-12-13 18:31:08,184 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 18:31:08,185 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 139 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 443 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 18:31:08,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:31:08,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-12-13 18:31:08,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2022-12-13 18:31:08,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.5393258426966292) internal successors, (548), 356 states have internal predecessors, (548), 0 states have call successors, (0), 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 18:31:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 548 transitions. [2022-12-13 18:31:08,212 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 548 transitions. Word has length 61 [2022-12-13 18:31:08,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:08,212 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 548 transitions. [2022-12-13 18:31:08,212 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 18:31:08,213 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 548 transitions. [2022-12-13 18:31:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 18:31:08,213 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:08,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:08,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:31:08,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:08,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:08,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1872640227, now seen corresponding path program 1 times [2022-12-13 18:31:08,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:08,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133250911] [2022-12-13 18:31:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:08,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:08,276 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 18:31:08,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:08,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133250911] [2022-12-13 18:31:08,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133250911] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:08,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:08,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:08,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540025462] [2022-12-13 18:31:08,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:08,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:31:08,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:08,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:31:08,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:31:08,279 INFO L87 Difference]: Start difference. First operand 357 states and 548 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:31:08,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:08,330 INFO L93 Difference]: Finished difference Result 937 states and 1470 transitions. [2022-12-13 18:31:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:31:08,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-13 18:31:08,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:08,333 INFO L225 Difference]: With dead ends: 937 [2022-12-13 18:31:08,333 INFO L226 Difference]: Without dead ends: 615 [2022-12-13 18:31:08,334 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 18:31:08,335 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 134 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 428 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 18:31:08,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 428 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:31:08,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-12-13 18:31:08,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 613. [2022-12-13 18:31:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 1.5555555555555556) internal successors, (952), 612 states have internal predecessors, (952), 0 states have call successors, (0), 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 18:31:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 952 transitions. [2022-12-13 18:31:08,376 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 952 transitions. Word has length 62 [2022-12-13 18:31:08,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:08,376 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 952 transitions. [2022-12-13 18:31:08,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:31:08,377 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 952 transitions. [2022-12-13 18:31:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 18:31:08,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:08,378 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 18:31:08,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:31:08,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:08,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:08,378 INFO L85 PathProgramCache]: Analyzing trace with hash -562045070, now seen corresponding path program 1 times [2022-12-13 18:31:08,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:08,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983052123] [2022-12-13 18:31:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:08,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:08,437 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 18:31:08,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:08,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983052123] [2022-12-13 18:31:08,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983052123] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:08,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:08,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:08,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168907595] [2022-12-13 18:31:08,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:08,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:31:08,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:08,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:31:08,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:31:08,440 INFO L87 Difference]: Start difference. First operand 613 states and 952 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 18:31:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:08,520 INFO L93 Difference]: Finished difference Result 1641 states and 2578 transitions. [2022-12-13 18:31:08,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:31:08,520 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 18:31:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:08,523 INFO L225 Difference]: With dead ends: 1641 [2022-12-13 18:31:08,523 INFO L226 Difference]: Without dead ends: 1063 [2022-12-13 18:31:08,524 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 18:31:08,525 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 129 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 413 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 18:31:08,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 413 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:31:08,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-12-13 18:31:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2022-12-13 18:31:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.558490566037736) internal successors, (1652), 1060 states have internal predecessors, (1652), 0 states have call successors, (0), 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 18:31:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1652 transitions. [2022-12-13 18:31:08,585 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1652 transitions. Word has length 63 [2022-12-13 18:31:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:08,586 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1652 transitions. [2022-12-13 18:31:08,586 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 18:31:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1652 transitions. [2022-12-13 18:31:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 18:31:08,587 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:08,587 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 18:31:08,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:31:08,587 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:08,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1925116710, now seen corresponding path program 1 times [2022-12-13 18:31:08,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:08,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255338633] [2022-12-13 18:31:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:08,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:08,643 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 18:31:08,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:08,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255338633] [2022-12-13 18:31:08,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255338633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:08,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:08,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:08,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836946729] [2022-12-13 18:31:08,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:08,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:31:08,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:31:08,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:31:08,645 INFO L87 Difference]: Start difference. First operand 1061 states and 1652 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 18:31:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:08,757 INFO L93 Difference]: Finished difference Result 2857 states and 4470 transitions. [2022-12-13 18:31:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:31:08,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 18:31:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:08,761 INFO L225 Difference]: With dead ends: 2857 [2022-12-13 18:31:08,761 INFO L226 Difference]: Without dead ends: 1831 [2022-12-13 18:31:08,763 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 18:31:08,764 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 124 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 398 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 18:31:08,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 398 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:31:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-12-13 18:31:08,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1829. [2022-12-13 18:31:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 1.5514223194748358) internal successors, (2836), 1828 states have internal predecessors, (2836), 0 states have call successors, (0), 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 18:31:08,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2836 transitions. [2022-12-13 18:31:08,879 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2836 transitions. Word has length 64 [2022-12-13 18:31:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:08,879 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2836 transitions. [2022-12-13 18:31:08,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 18:31:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2836 transitions. [2022-12-13 18:31:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 18:31:08,880 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:08,880 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 18:31:08,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:31:08,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:08,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash 210559993, now seen corresponding path program 1 times [2022-12-13 18:31:08,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:08,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31093481] [2022-12-13 18:31:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:08,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:08,983 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 18:31:08,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:08,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31093481] [2022-12-13 18:31:08,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31093481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:08,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:08,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:31:08,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907211769] [2022-12-13 18:31:08,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:08,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:31:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:31:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:31:08,985 INFO L87 Difference]: Start difference. First operand 1829 states and 2836 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 18:31:09,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:09,654 INFO L93 Difference]: Finished difference Result 12593 states and 19642 transitions. [2022-12-13 18:31:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:31:09,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 18:31:09,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:09,688 INFO L225 Difference]: With dead ends: 12593 [2022-12-13 18:31:09,688 INFO L226 Difference]: Without dead ends: 10799 [2022-12-13 18:31:09,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:31:09,692 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 2059 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:09,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 1257 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:31:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10799 states. [2022-12-13 18:31:10,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10799 to 3621. [2022-12-13 18:31:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3620 states have (on average 1.5392265193370165) internal successors, (5572), 3620 states have internal predecessors, (5572), 0 states have call successors, (0), 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 18:31:10,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5572 transitions. [2022-12-13 18:31:10,035 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5572 transitions. Word has length 65 [2022-12-13 18:31:10,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:10,035 INFO L495 AbstractCegarLoop]: Abstraction has 3621 states and 5572 transitions. [2022-12-13 18:31:10,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 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 18:31:10,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5572 transitions. [2022-12-13 18:31:10,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 18:31:10,036 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:10,036 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 18:31:10,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:31:10,036 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:10,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:10,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2082031049, now seen corresponding path program 1 times [2022-12-13 18:31:10,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:10,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873867335] [2022-12-13 18:31:10,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:10,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:10,174 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 18:31:10,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:10,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873867335] [2022-12-13 18:31:10,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873867335] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:10,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:10,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:31:10,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479878237] [2022-12-13 18:31:10,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:10,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:31:10,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:10,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:31:10,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:31:10,175 INFO L87 Difference]: Start difference. First operand 3621 states and 5572 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 18:31:11,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:11,936 INFO L93 Difference]: Finished difference Result 18831 states and 28777 transitions. [2022-12-13 18:31:11,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:31:11,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 18:31:11,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:11,969 INFO L225 Difference]: With dead ends: 18831 [2022-12-13 18:31:11,969 INFO L226 Difference]: Without dead ends: 15245 [2022-12-13 18:31:11,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:31:11,975 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 641 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:11,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1292 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:31:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15245 states. [2022-12-13 18:31:13,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15245 to 15237. [2022-12-13 18:31:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15237 states, 15236 states have (on average 1.520871619847729) internal successors, (23172), 15236 states have internal predecessors, (23172), 0 states have call successors, (0), 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 18:31:13,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15237 states to 15237 states and 23172 transitions. [2022-12-13 18:31:13,624 INFO L78 Accepts]: Start accepts. Automaton has 15237 states and 23172 transitions. Word has length 66 [2022-12-13 18:31:13,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:13,624 INFO L495 AbstractCegarLoop]: Abstraction has 15237 states and 23172 transitions. [2022-12-13 18:31:13,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 18:31:13,625 INFO L276 IsEmpty]: Start isEmpty. Operand 15237 states and 23172 transitions. [2022-12-13 18:31:13,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 18:31:13,625 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:13,626 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 18:31:13,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:31:13,626 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:13,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:13,627 INFO L85 PathProgramCache]: Analyzing trace with hash 254256256, now seen corresponding path program 1 times [2022-12-13 18:31:13,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:13,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146405888] [2022-12-13 18:31:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:13,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:13,729 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 18:31:13,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:13,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146405888] [2022-12-13 18:31:13,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146405888] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:13,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:13,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:31:13,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294180522] [2022-12-13 18:31:13,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:13,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:13,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:13,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:13,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:13,732 INFO L87 Difference]: Start difference. First operand 15237 states and 23172 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 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 18:31:17,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:17,093 INFO L93 Difference]: Finished difference Result 45641 states and 69446 transitions. [2022-12-13 18:31:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:31:17,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 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 18:31:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:17,138 INFO L225 Difference]: With dead ends: 45641 [2022-12-13 18:31:17,138 INFO L226 Difference]: Without dead ends: 30439 [2022-12-13 18:31:17,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:31:17,153 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 828 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:17,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 212 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:31:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30439 states. [2022-12-13 18:31:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30439 to 30437. [2022-12-13 18:31:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30437 states, 30436 states have (on average 1.5120252332763833) internal successors, (46020), 30436 states have internal predecessors, (46020), 0 states have call successors, (0), 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 18:31:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30437 states to 30437 states and 46020 transitions. [2022-12-13 18:31:20,527 INFO L78 Accepts]: Start accepts. Automaton has 30437 states and 46020 transitions. Word has length 68 [2022-12-13 18:31:20,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:20,527 INFO L495 AbstractCegarLoop]: Abstraction has 30437 states and 46020 transitions. [2022-12-13 18:31:20,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 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 18:31:20,528 INFO L276 IsEmpty]: Start isEmpty. Operand 30437 states and 46020 transitions. [2022-12-13 18:31:20,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 18:31:20,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:20,529 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 18:31:20,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:31:20,529 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:20,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1142699675, now seen corresponding path program 1 times [2022-12-13 18:31:20,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:20,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987950723] [2022-12-13 18:31:20,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:20,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:20,665 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 18:31:20,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:20,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987950723] [2022-12-13 18:31:20,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987950723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:20,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:20,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:31:20,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505331370] [2022-12-13 18:31:20,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:20,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:20,667 INFO L87 Difference]: Start difference. First operand 30437 states and 46020 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 18:31:28,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:28,029 INFO L93 Difference]: Finished difference Result 62119 states and 93285 transitions. [2022-12-13 18:31:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:31:28,030 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 18:31:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:28,113 INFO L225 Difference]: With dead ends: 62119 [2022-12-13 18:31:28,113 INFO L226 Difference]: Without dead ends: 62117 [2022-12-13 18:31:28,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:31:28,123 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 300 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:28,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 939 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:31:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62117 states. [2022-12-13 18:31:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62117 to 31717. [2022-12-13 18:31:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31717 states, 31716 states have (on average 1.4913608273426662) internal successors, (47300), 31716 states have internal predecessors, (47300), 0 states have call successors, (0), 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 18:31:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31717 states to 31717 states and 47300 transitions. [2022-12-13 18:31:32,173 INFO L78 Accepts]: Start accepts. Automaton has 31717 states and 47300 transitions. Word has length 68 [2022-12-13 18:31:32,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:32,173 INFO L495 AbstractCegarLoop]: Abstraction has 31717 states and 47300 transitions. [2022-12-13 18:31:32,173 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 18:31:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 31717 states and 47300 transitions. [2022-12-13 18:31:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 18:31:32,174 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:32,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:32,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:31:32,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:32,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1053378469, now seen corresponding path program 1 times [2022-12-13 18:31:32,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:32,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104973800] [2022-12-13 18:31:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:32,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:32,219 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 18:31:32,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:32,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104973800] [2022-12-13 18:31:32,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104973800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:32,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:32,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:31:32,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782586155] [2022-12-13 18:31:32,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:32,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:31:32,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:32,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:31:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:31:32,221 INFO L87 Difference]: Start difference. First operand 31717 states and 47300 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:31:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:37,160 INFO L93 Difference]: Finished difference Result 70715 states and 105272 transitions. [2022-12-13 18:31:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:31:37,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 18:31:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:37,207 INFO L225 Difference]: With dead ends: 70715 [2022-12-13 18:31:37,207 INFO L226 Difference]: Without dead ends: 39033 [2022-12-13 18:31:37,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:31:37,228 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 112 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:37,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 385 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:31:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39033 states. [2022-12-13 18:31:42,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39033 to 39031. [2022-12-13 18:31:42,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39031 states, 39030 states have (on average 1.4825006405329233) internal successors, (57862), 39030 states have internal predecessors, (57862), 0 states have call successors, (0), 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 18:31:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39031 states to 39031 states and 57862 transitions. [2022-12-13 18:31:42,093 INFO L78 Accepts]: Start accepts. Automaton has 39031 states and 57862 transitions. Word has length 69 [2022-12-13 18:31:42,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:42,093 INFO L495 AbstractCegarLoop]: Abstraction has 39031 states and 57862 transitions. [2022-12-13 18:31:42,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:31:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 39031 states and 57862 transitions. [2022-12-13 18:31:42,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 18:31:42,102 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:42,102 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2022-12-13 18:31:42,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:31:42,102 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:42,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash -212554062, now seen corresponding path program 1 times [2022-12-13 18:31:42,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:42,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831641422] [2022-12-13 18:31:42,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:42,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:31:42,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:42,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831641422] [2022-12-13 18:31:42,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831641422] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:31:42,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127180135] [2022-12-13 18:31:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:42,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:31:42,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:31:42,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:31:42,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:31:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 18:31:42,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:31:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:31:42,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:31:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:31:42,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127180135] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:31:42,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:31:42,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 17 [2022-12-13 18:31:42,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518978844] [2022-12-13 18:31:42,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:31:42,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:31:42,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:42,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:31:42,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:31:42,940 INFO L87 Difference]: Start difference. First operand 39031 states and 57862 transitions. Second operand has 17 states, 17 states have (on average 15.882352941176471) internal successors, (270), 17 states have internal predecessors, (270), 0 states have call successors, (0), 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 18:33:32,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:32,814 INFO L93 Difference]: Finished difference Result 703502 states and 1031287 transitions. [2022-12-13 18:33:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-12-13 18:33:32,814 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.882352941176471) internal successors, (270), 17 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-12-13 18:33:32,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:33,964 INFO L225 Difference]: With dead ends: 703502 [2022-12-13 18:33:33,965 INFO L226 Difference]: Without dead ends: 664508 [2022-12-13 18:33:34,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10805 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4133, Invalid=20047, Unknown=0, NotChecked=0, Total=24180 [2022-12-13 18:33:34,127 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 15968 mSDsluCounter, 5022 mSDsCounter, 0 mSdLazyCounter, 5074 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15968 SdHoareTripleChecker+Valid, 5916 SdHoareTripleChecker+Invalid, 5136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 5074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:34,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15968 Valid, 5916 Invalid, 5136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 5074 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 18:33:34,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664508 states. [2022-12-13 18:34:12,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664508 to 217407. [2022-12-13 18:34:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217407 states, 217406 states have (on average 1.4606128625704902) internal successors, (317546), 217406 states have internal predecessors, (317546), 0 states have call successors, (0), 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 18:34:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217407 states to 217407 states and 317546 transitions. [2022-12-13 18:34:13,397 INFO L78 Accepts]: Start accepts. Automaton has 217407 states and 317546 transitions. Word has length 94 [2022-12-13 18:34:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:13,398 INFO L495 AbstractCegarLoop]: Abstraction has 217407 states and 317546 transitions. [2022-12-13 18:34:13,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.882352941176471) internal successors, (270), 17 states have internal predecessors, (270), 0 states have call successors, (0), 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 18:34:13,398 INFO L276 IsEmpty]: Start isEmpty. Operand 217407 states and 317546 transitions. [2022-12-13 18:34:13,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 18:34:13,412 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:13,412 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] [2022-12-13 18:34:13,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:34:13,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f53ddc-5cc3-4d15-aa55-5880101d0855/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:34:13,613 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:13,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:13,614 INFO L85 PathProgramCache]: Analyzing trace with hash 625845135, now seen corresponding path program 1 times [2022-12-13 18:34:13,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:13,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30229964] [2022-12-13 18:34:13,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:13,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:34:13,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:13,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30229964] [2022-12-13 18:34:13,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30229964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:34:13,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:34:13,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:34:13,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687755076] [2022-12-13 18:34:13,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:34:13,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:34:13,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:13,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:34:13,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:34:13,690 INFO L87 Difference]: Start difference. First operand 217407 states and 317546 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 18:35:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:35:12,937 INFO L93 Difference]: Finished difference Result 540217 states and 787878 transitions. [2022-12-13 18:35:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:35:12,937 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 95 [2022-12-13 18:35:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:35:13,529 INFO L225 Difference]: With dead ends: 540217 [2022-12-13 18:35:13,529 INFO L226 Difference]: Without dead ends: 357567 [2022-12-13 18:35:13,677 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 18:35:13,678 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 114 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 422 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 18:35:13,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 422 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:35:14,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357567 states. [2022-12-13 18:36:16,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357567 to 346717. [2022-12-13 18:36:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346717 states, 346716 states have (on average 1.4468671765941001) internal successors, (501652), 346716 states have internal predecessors, (501652), 0 states have call successors, (0), 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 18:36:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346717 states to 346717 states and 501652 transitions. [2022-12-13 18:36:17,717 INFO L78 Accepts]: Start accepts. Automaton has 346717 states and 501652 transitions. Word has length 95 [2022-12-13 18:36:17,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:36:17,717 INFO L495 AbstractCegarLoop]: Abstraction has 346717 states and 501652 transitions. [2022-12-13 18:36:17,717 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 18:36:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand 346717 states and 501652 transitions. [2022-12-13 18:36:17,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 18:36:17,737 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:36:17,737 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] [2022-12-13 18:36:17,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:36:17,738 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:36:17,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:36:17,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1560210013, now seen corresponding path program 1 times [2022-12-13 18:36:17,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:36:17,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129872339] [2022-12-13 18:36:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:17,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:36:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:36:17,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:36:17,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129872339] [2022-12-13 18:36:17,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129872339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:36:17,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:36:17,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:36:17,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936274565] [2022-12-13 18:36:17,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:36:17,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:36:17,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:36:17,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:36:17,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:36:17,782 INFO L87 Difference]: Start difference. First operand 346717 states and 501652 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 18:37:30,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:37:30,174 INFO L93 Difference]: Finished difference Result 491810 states and 710760 transitions. [2022-12-13 18:37:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:37:30,175 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 95 [2022-12-13 18:37:30,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:37:30,754 INFO L225 Difference]: With dead ends: 491810 [2022-12-13 18:37:30,754 INFO L226 Difference]: Without dead ends: 353624 [2022-12-13 18:37:30,883 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 18:37:30,884 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 117 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:37:30,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 442 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:37:31,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353624 states. [2022-12-13 18:38:35,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353624 to 346993. [2022-12-13 18:38:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346993 states, 346992 states have (on average 1.4283528150504912) internal successors, (495627), 346992 states have internal predecessors, (495627), 0 states have call successors, (0), 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 18:38:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346993 states to 346993 states and 495627 transitions. [2022-12-13 18:38:36,885 INFO L78 Accepts]: Start accepts. Automaton has 346993 states and 495627 transitions. Word has length 95 [2022-12-13 18:38:36,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:38:36,886 INFO L495 AbstractCegarLoop]: Abstraction has 346993 states and 495627 transitions. [2022-12-13 18:38:36,886 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 18:38:36,886 INFO L276 IsEmpty]: Start isEmpty. Operand 346993 states and 495627 transitions. [2022-12-13 18:38:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 18:38:36,905 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:38:36,905 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] [2022-12-13 18:38:36,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:38:36,906 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:38:36,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:38:36,906 INFO L85 PathProgramCache]: Analyzing trace with hash -858074506, now seen corresponding path program 1 times [2022-12-13 18:38:36,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:38:36,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591058660] [2022-12-13 18:38:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:36,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:38:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:38:36,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:38:36,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591058660] [2022-12-13 18:38:36,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591058660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:38:36,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:38:36,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:38:36,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415065986] [2022-12-13 18:38:36,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:38:36,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:38:36,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:38:36,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:38:36,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:38:36,958 INFO L87 Difference]: Start difference. First operand 346993 states and 495627 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 18:40:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:40:00,960 INFO L93 Difference]: Finished difference Result 662744 states and 946954 transitions. [2022-12-13 18:40:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:40:00,960 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 95 [2022-12-13 18:40:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:40:01,770 INFO L225 Difference]: With dead ends: 662744 [2022-12-13 18:40:01,770 INFO L226 Difference]: Without dead ends: 459101 [2022-12-13 18:40:01,946 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 18:40:01,947 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 116 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 423 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 18:40:01,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 423 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:40:02,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459101 states. [2022-12-13 18:41:20,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459101 to 438226. [2022-12-13 18:41:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438226 states, 438225 states have (on average 1.413810257287923) internal successors, (619567), 438225 states have internal predecessors, (619567), 0 states have call successors, (0), 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 18:41:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438226 states to 438226 states and 619567 transitions. [2022-12-13 18:41:22,123 INFO L78 Accepts]: Start accepts. Automaton has 438226 states and 619567 transitions. Word has length 95 [2022-12-13 18:41:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:41:22,123 INFO L495 AbstractCegarLoop]: Abstraction has 438226 states and 619567 transitions. [2022-12-13 18:41:22,123 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 18:41:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 438226 states and 619567 transitions. [2022-12-13 18:41:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 18:41:22,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:41:22,145 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] [2022-12-13 18:41:22,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:41:22,145 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:41:22,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:41:22,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1809583687, now seen corresponding path program 1 times [2022-12-13 18:41:22,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:41:22,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193832526] [2022-12-13 18:41:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:41:22,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:41:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:41:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:41:22,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:41:22,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193832526] [2022-12-13 18:41:22,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193832526] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:41:22,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:41:22,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:41:22,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673122939] [2022-12-13 18:41:22,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:41:22,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:41:22,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:41:22,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:41:22,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:41:22,200 INFO L87 Difference]: Start difference. First operand 438226 states and 619567 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)