./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 fef6217d4b08cb3aa025852d66a6672fc9c8d590a1d32efbef068d3f53b164c9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:18:42,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:18:42,902 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:18:42,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:18:42,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:18:42,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:18:42,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:18:42,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:18:42,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:18:42,940 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:18:42,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:18:42,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:18:42,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:18:42,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:18:42,943 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:18:42,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:18:42,944 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:18:42,945 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:18:42,946 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:18:42,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:18:42,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:18:42,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:18:42,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:18:42,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:18:42,953 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:18:42,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:18:42,953 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:18:42,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:18:42,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:18:42,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:18:42,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:18:42,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:18:42,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:18:42,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:18:42,957 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:18:42,957 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:18:42,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:18:42,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:18:42,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:18:42,958 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:18:42,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:18:42,958 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:18:42,959 INFO L153 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_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fef6217d4b08cb3aa025852d66a6672fc9c8d590a1d32efbef068d3f53b164c9 [2023-11-29 02:18:43,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:18:43,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:18:43,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:18:43,248 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:18:43,249 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:18:43,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c [2023-11-29 02:18:46,111 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:18:46,383 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:18:46,384 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c [2023-11-29 02:18:46,403 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/data/65caaab71/e74c4c3efa4147a3b4207efd0f404dfd/FLAGfeb1bd113 [2023-11-29 02:18:46,417 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/data/65caaab71/e74c4c3efa4147a3b4207efd0f404dfd [2023-11-29 02:18:46,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:18:46,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:18:46,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:18:46,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:18:46,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:18:46,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:18:46" (1/1) ... [2023-11-29 02:18:46,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fee0ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:46, skipping insertion in model container [2023-11-29 02:18:46,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:18:46" (1/1) ... [2023-11-29 02:18:46,510 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:18:46,888 WARN L240 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_addaba7c-9193-4d03-b7f6-b4b3ece64231/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c[65679,65692] [2023-11-29 02:18:46,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:18:46,909 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:18:47,046 WARN L240 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_addaba7c-9193-4d03-b7f6-b4b3ece64231/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c[65679,65692] [2023-11-29 02:18:47,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:18:47,064 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:18:47,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47 WrapperNode [2023-11-29 02:18:47,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:18:47,065 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:18:47,066 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:18:47,066 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:18:47,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (1/1) ... [2023-11-29 02:18:47,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (1/1) ... [2023-11-29 02:18:47,172 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2112 [2023-11-29 02:18:47,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:18:47,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:18:47,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:18:47,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:18:47,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (1/1) ... [2023-11-29 02:18:47,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (1/1) ... [2023-11-29 02:18:47,193 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (1/1) ... [2023-11-29 02:18:47,226 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:18:47,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (1/1) ... [2023-11-29 02:18:47,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (1/1) ... [2023-11-29 02:18:47,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (1/1) ... [2023-11-29 02:18:47,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (1/1) ... [2023-11-29 02:18:47,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (1/1) ... [2023-11-29 02:18:47,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (1/1) ... [2023-11-29 02:18:47,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:18:47,314 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:18:47,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:18:47,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:18:47,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (1/1) ... [2023-11-29 02:18:47,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:18:47,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:18:47,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:18:47,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_addaba7c-9193-4d03-b7f6-b4b3ece64231/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:18:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:18:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:18:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:18:47,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:18:47,565 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:18:47,567 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:18:49,221 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:18:49,308 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:18:49,308 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:18:49,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:18:49 BoogieIcfgContainer [2023-11-29 02:18:49,309 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:18:49,312 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:18:49,312 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:18:49,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:18:49,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:18:46" (1/3) ... [2023-11-29 02:18:49,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb923c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:18:49, skipping insertion in model container [2023-11-29 02:18:49,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:18:47" (2/3) ... [2023-11-29 02:18:49,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb923c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:18:49, skipping insertion in model container [2023-11-29 02:18:49,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:18:49" (3/3) ... [2023-11-29 02:18:49,319 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c [2023-11-29 02:18:49,341 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:18:49,341 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:18:49,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:18:49,426 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=LoopHeads, 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;@722871f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:18:49,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:18:49,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 701 states, 699 states have (on average 1.871244635193133) internal successors, (1308), 700 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:49,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 02:18:49,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:49,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:49,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:49,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:49,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1908807139, now seen corresponding path program 1 times [2023-11-29 02:18:49,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:49,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036651257] [2023-11-29 02:18:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:49,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:49,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:49,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036651257] [2023-11-29 02:18:49,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036651257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:49,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:49,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:18:49,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028871468] [2023-11-29 02:18:49,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:49,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:18:49,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:49,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:18:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:18:49,980 INFO L87 Difference]: Start difference. First operand has 701 states, 699 states have (on average 1.871244635193133) internal successors, (1308), 700 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:50,083 INFO L93 Difference]: Finished difference Result 852 states and 1581 transitions. [2023-11-29 02:18:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:18:50,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-11-29 02:18:50,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:50,103 INFO L225 Difference]: With dead ends: 852 [2023-11-29 02:18:50,103 INFO L226 Difference]: Without dead ends: 699 [2023-11-29 02:18:50,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:18:50,109 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:50,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1300 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-29 02:18:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2023-11-29 02:18:50,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.8667621776504297) internal successors, (1303), 698 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1303 transitions. [2023-11-29 02:18:50,187 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1303 transitions. Word has length 150 [2023-11-29 02:18:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:50,189 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1303 transitions. [2023-11-29 02:18:50,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1303 transitions. [2023-11-29 02:18:50,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 02:18:50,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:50,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:50,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:18:50,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:50,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:50,195 INFO L85 PathProgramCache]: Analyzing trace with hash 14420895, now seen corresponding path program 1 times [2023-11-29 02:18:50,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:50,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426544823] [2023-11-29 02:18:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:50,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:50,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:50,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:50,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426544823] [2023-11-29 02:18:50,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426544823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:50,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:50,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:18:50,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106142338] [2023-11-29 02:18:50,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:50,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:18:50,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:18:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:18:50,627 INFO L87 Difference]: Start difference. First operand 699 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:50,797 INFO L93 Difference]: Finished difference Result 852 states and 1575 transitions. [2023-11-29 02:18:50,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:18:50,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-11-29 02:18:50,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:50,804 INFO L225 Difference]: With dead ends: 852 [2023-11-29 02:18:50,804 INFO L226 Difference]: Without dead ends: 699 [2023-11-29 02:18:50,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:18:50,808 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 0 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:50,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3832 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:18:50,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-29 02:18:50,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2023-11-29 02:18:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.7736389684813754) internal successors, (1238), 698 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:50,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1238 transitions. [2023-11-29 02:18:50,831 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1238 transitions. Word has length 150 [2023-11-29 02:18:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:50,832 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1238 transitions. [2023-11-29 02:18:50,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1238 transitions. [2023-11-29 02:18:50,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-29 02:18:50,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:50,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:50,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:18:50,837 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:50,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:50,838 INFO L85 PathProgramCache]: Analyzing trace with hash 705995133, now seen corresponding path program 1 times [2023-11-29 02:18:50,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:50,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263217301] [2023-11-29 02:18:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:50,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:51,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:51,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263217301] [2023-11-29 02:18:51,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263217301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:51,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:51,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:51,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752398828] [2023-11-29 02:18:51,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:51,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:51,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:51,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:51,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:51,124 INFO L87 Difference]: Start difference. First operand 699 states and 1238 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:51,199 INFO L93 Difference]: Finished difference Result 985 states and 1750 transitions. [2023-11-29 02:18:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:51,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2023-11-29 02:18:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:51,207 INFO L225 Difference]: With dead ends: 985 [2023-11-29 02:18:51,207 INFO L226 Difference]: Without dead ends: 835 [2023-11-29 02:18:51,208 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 [2023-11-29 02:18:51,209 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 234 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:51,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2396 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:51,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-11-29 02:18:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 832. [2023-11-29 02:18:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 1.772563176895307) internal successors, (1473), 831 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1473 transitions. [2023-11-29 02:18:51,238 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1473 transitions. Word has length 214 [2023-11-29 02:18:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:51,239 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1473 transitions. [2023-11-29 02:18:51,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1473 transitions. [2023-11-29 02:18:51,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-29 02:18:51,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:51,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:51,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:18:51,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:51,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:51,246 INFO L85 PathProgramCache]: Analyzing trace with hash 559205667, now seen corresponding path program 1 times [2023-11-29 02:18:51,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:51,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567841924] [2023-11-29 02:18:51,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:51,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:51,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:51,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567841924] [2023-11-29 02:18:51,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567841924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:51,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:51,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:51,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828169704] [2023-11-29 02:18:51,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:51,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:51,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:51,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:51,491 INFO L87 Difference]: Start difference. First operand 832 states and 1473 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:51,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:51,544 INFO L93 Difference]: Finished difference Result 1374 states and 2437 transitions. [2023-11-29 02:18:51,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:51,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2023-11-29 02:18:51,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:51,553 INFO L225 Difference]: With dead ends: 1374 [2023-11-29 02:18:51,553 INFO L226 Difference]: Without dead ends: 1091 [2023-11-29 02:18:51,554 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 [2023-11-29 02:18:51,555 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 234 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:51,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2409 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:51,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2023-11-29 02:18:51,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1087. [2023-11-29 02:18:51,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 1.7734806629834254) internal successors, (1926), 1086 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1926 transitions. [2023-11-29 02:18:51,588 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1926 transitions. Word has length 218 [2023-11-29 02:18:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:51,589 INFO L495 AbstractCegarLoop]: Abstraction has 1087 states and 1926 transitions. [2023-11-29 02:18:51,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1926 transitions. [2023-11-29 02:18:51,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-11-29 02:18:51,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:51,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:51,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:18:51,594 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:51,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:51,594 INFO L85 PathProgramCache]: Analyzing trace with hash -994955831, now seen corresponding path program 1 times [2023-11-29 02:18:51,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:51,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515364773] [2023-11-29 02:18:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:51,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:51,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:51,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515364773] [2023-11-29 02:18:51,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515364773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:51,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:51,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:51,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059365996] [2023-11-29 02:18:51,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:51,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:51,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:51,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:51,818 INFO L87 Difference]: Start difference. First operand 1087 states and 1926 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:51,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:51,874 INFO L93 Difference]: Finished difference Result 2115 states and 3752 transitions. [2023-11-29 02:18:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:51,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2023-11-29 02:18:51,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:51,885 INFO L225 Difference]: With dead ends: 2115 [2023-11-29 02:18:51,885 INFO L226 Difference]: Without dead ends: 1577 [2023-11-29 02:18:51,886 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 [2023-11-29 02:18:51,887 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 226 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:51,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 2410 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:51,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2023-11-29 02:18:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1571. [2023-11-29 02:18:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 1.7719745222929937) internal successors, (2782), 1570 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2782 transitions. [2023-11-29 02:18:51,930 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2782 transitions. Word has length 222 [2023-11-29 02:18:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:51,931 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 2782 transitions. [2023-11-29 02:18:51,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2782 transitions. [2023-11-29 02:18:51,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-29 02:18:51,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:51,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:51,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:18:51,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:51,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:51,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2029632657, now seen corresponding path program 1 times [2023-11-29 02:18:51,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:51,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540308963] [2023-11-29 02:18:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:51,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:52,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:52,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540308963] [2023-11-29 02:18:52,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540308963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:52,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:52,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:52,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428124240] [2023-11-29 02:18:52,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:52,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:52,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:52,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:52,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:52,121 INFO L87 Difference]: Start difference. First operand 1571 states and 2782 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:52,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:52,230 INFO L93 Difference]: Finished difference Result 3519 states and 6232 transitions. [2023-11-29 02:18:52,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:52,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2023-11-29 02:18:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:52,249 INFO L225 Difference]: With dead ends: 3519 [2023-11-29 02:18:52,250 INFO L226 Difference]: Without dead ends: 2497 [2023-11-29 02:18:52,252 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 [2023-11-29 02:18:52,253 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 218 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:52,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 2411 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:52,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2023-11-29 02:18:52,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2487. [2023-11-29 02:18:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2486 states have (on average 1.7674979887369269) internal successors, (4394), 2486 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 4394 transitions. [2023-11-29 02:18:52,361 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 4394 transitions. Word has length 226 [2023-11-29 02:18:52,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:52,362 INFO L495 AbstractCegarLoop]: Abstraction has 2487 states and 4394 transitions. [2023-11-29 02:18:52,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 4394 transitions. [2023-11-29 02:18:52,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-11-29 02:18:52,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:52,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:52,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:18:52,370 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:52,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:52,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1886031381, now seen corresponding path program 1 times [2023-11-29 02:18:52,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:52,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878489237] [2023-11-29 02:18:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:52,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:52,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:52,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878489237] [2023-11-29 02:18:52,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878489237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:52,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:52,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:52,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112138944] [2023-11-29 02:18:52,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:52,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:52,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:52,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:52,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:52,641 INFO L87 Difference]: Start difference. First operand 2487 states and 4394 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:52,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:52,741 INFO L93 Difference]: Finished difference Result 6171 states and 10892 transitions. [2023-11-29 02:18:52,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:52,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2023-11-29 02:18:52,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:52,769 INFO L225 Difference]: With dead ends: 6171 [2023-11-29 02:18:52,770 INFO L226 Difference]: Without dead ends: 4233 [2023-11-29 02:18:52,773 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 [2023-11-29 02:18:52,774 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 210 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:52,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 2412 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:52,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2023-11-29 02:18:52,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 4215. [2023-11-29 02:18:52,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4215 states, 4214 states have (on average 1.7603227337446608) internal successors, (7418), 4214 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:52,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 7418 transitions. [2023-11-29 02:18:52,918 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 7418 transitions. Word has length 230 [2023-11-29 02:18:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:52,918 INFO L495 AbstractCegarLoop]: Abstraction has 4215 states and 7418 transitions. [2023-11-29 02:18:52,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:52,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 7418 transitions. [2023-11-29 02:18:52,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-29 02:18:52,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:52,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:52,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:18:52,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:52,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2117635515, now seen corresponding path program 1 times [2023-11-29 02:18:52,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:52,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250033545] [2023-11-29 02:18:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:52,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:53,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:53,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250033545] [2023-11-29 02:18:53,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250033545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:53,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:53,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:18:53,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097188123] [2023-11-29 02:18:53,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:53,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:18:53,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:53,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:18:53,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:18:53,321 INFO L87 Difference]: Start difference. First operand 4215 states and 7418 transitions. Second operand has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:54,189 INFO L93 Difference]: Finished difference Result 25227 states and 44660 transitions. [2023-11-29 02:18:54,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:18:54,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2023-11-29 02:18:54,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:54,293 INFO L225 Difference]: With dead ends: 25227 [2023-11-29 02:18:54,293 INFO L226 Difference]: Without dead ends: 21561 [2023-11-29 02:18:54,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:18:54,304 INFO L413 NwaCegarLoop]: 1241 mSDtfsCounter, 3272 mSDsluCounter, 9550 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3272 SdHoareTripleChecker+Valid, 10791 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:54,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3272 Valid, 10791 Invalid, 320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:18:54,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21561 states. [2023-11-29 02:18:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21561 to 7738. [2023-11-29 02:18:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7738 states, 7737 states have (on average 1.758821248545948) internal successors, (13608), 7737 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7738 states to 7738 states and 13608 transitions. [2023-11-29 02:18:54,723 INFO L78 Accepts]: Start accepts. Automaton has 7738 states and 13608 transitions. Word has length 234 [2023-11-29 02:18:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:54,724 INFO L495 AbstractCegarLoop]: Abstraction has 7738 states and 13608 transitions. [2023-11-29 02:18:54,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:54,725 INFO L276 IsEmpty]: Start isEmpty. Operand 7738 states and 13608 transitions. [2023-11-29 02:18:54,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-29 02:18:54,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:54,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:54,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:18:54,733 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:54,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1148420136, now seen corresponding path program 1 times [2023-11-29 02:18:54,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:54,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754577691] [2023-11-29 02:18:54,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:54,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:54,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:54,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754577691] [2023-11-29 02:18:54,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754577691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:54,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:54,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:18:54,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178724517] [2023-11-29 02:18:54,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:54,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:18:54,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:54,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:18:54,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:18:54,916 INFO L87 Difference]: Start difference. First operand 7738 states and 13608 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:55,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:55,200 INFO L93 Difference]: Finished difference Result 22547 states and 39801 transitions. [2023-11-29 02:18:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:18:55,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2023-11-29 02:18:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:55,231 INFO L225 Difference]: With dead ends: 22547 [2023-11-29 02:18:55,232 INFO L226 Difference]: Without dead ends: 15358 [2023-11-29 02:18:55,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:18:55,243 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 775 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 3700 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:55,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 3700 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:18:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15358 states. [2023-11-29 02:18:55,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15358 to 11515. [2023-11-29 02:18:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11515 states, 11514 states have (on average 1.7595970123328122) internal successors, (20260), 11514 states have internal predecessors, (20260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:55,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11515 states to 11515 states and 20260 transitions. [2023-11-29 02:18:55,606 INFO L78 Accepts]: Start accepts. Automaton has 11515 states and 20260 transitions. Word has length 235 [2023-11-29 02:18:55,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:55,606 INFO L495 AbstractCegarLoop]: Abstraction has 11515 states and 20260 transitions. [2023-11-29 02:18:55,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:55,607 INFO L276 IsEmpty]: Start isEmpty. Operand 11515 states and 20260 transitions. [2023-11-29 02:18:55,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-29 02:18:55,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:55,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:55,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:18:55,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:55,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:55,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1172966212, now seen corresponding path program 1 times [2023-11-29 02:18:55,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:55,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222345879] [2023-11-29 02:18:55,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:55,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:55,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:55,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:55,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222345879] [2023-11-29 02:18:55,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222345879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:55,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:55,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:18:55,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333552920] [2023-11-29 02:18:55,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:55,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:18:55,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:55,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:18:55,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:18:55,780 INFO L87 Difference]: Start difference. First operand 11515 states and 20260 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:56,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:56,187 INFO L93 Difference]: Finished difference Result 33849 states and 59649 transitions. [2023-11-29 02:18:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:18:56,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-11-29 02:18:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:56,237 INFO L225 Difference]: With dead ends: 33849 [2023-11-29 02:18:56,237 INFO L226 Difference]: Without dead ends: 22883 [2023-11-29 02:18:56,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:18:56,254 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 775 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:56,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 3887 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:18:56,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22883 states. [2023-11-29 02:18:56,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22883 to 17151. [2023-11-29 02:18:56,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17151 states, 17150 states have (on average 1.7565014577259475) internal successors, (30124), 17150 states have internal predecessors, (30124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17151 states to 17151 states and 30124 transitions. [2023-11-29 02:18:56,833 INFO L78 Accepts]: Start accepts. Automaton has 17151 states and 30124 transitions. Word has length 236 [2023-11-29 02:18:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:56,834 INFO L495 AbstractCegarLoop]: Abstraction has 17151 states and 30124 transitions. [2023-11-29 02:18:56,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:56,834 INFO L276 IsEmpty]: Start isEmpty. Operand 17151 states and 30124 transitions. [2023-11-29 02:18:56,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-11-29 02:18:56,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:56,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:56,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:18:56,846 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:56,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:56,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1939346321, now seen corresponding path program 1 times [2023-11-29 02:18:56,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:56,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720177839] [2023-11-29 02:18:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:56,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:57,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:57,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720177839] [2023-11-29 02:18:57,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720177839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:57,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:57,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:18:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800350172] [2023-11-29 02:18:57,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:57,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:18:57,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:57,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:18:57,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:18:57,193 INFO L87 Difference]: Start difference. First operand 17151 states and 30124 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:57,899 INFO L93 Difference]: Finished difference Result 50821 states and 89405 transitions. [2023-11-29 02:18:57,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:18:57,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2023-11-29 02:18:57,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:57,989 INFO L225 Difference]: With dead ends: 50821 [2023-11-29 02:18:57,989 INFO L226 Difference]: Without dead ends: 34219 [2023-11-29 02:18:58,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:18:58,021 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 773 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:58,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 3889 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:18:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34219 states. [2023-11-29 02:18:58,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34219 to 25615. [2023-11-29 02:18:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25615 states, 25614 states have (on average 1.7534941828687436) internal successors, (44914), 25614 states have internal predecessors, (44914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25615 states to 25615 states and 44914 transitions. [2023-11-29 02:18:58,707 INFO L78 Accepts]: Start accepts. Automaton has 25615 states and 44914 transitions. Word has length 237 [2023-11-29 02:18:58,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:58,708 INFO L495 AbstractCegarLoop]: Abstraction has 25615 states and 44914 transitions. [2023-11-29 02:18:58,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:58,708 INFO L276 IsEmpty]: Start isEmpty. Operand 25615 states and 44914 transitions. [2023-11-29 02:18:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 02:18:58,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:58,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:58,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:18:58,721 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:58,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:58,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1275113276, now seen corresponding path program 1 times [2023-11-29 02:18:58,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:58,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58006602] [2023-11-29 02:18:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:58,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:58,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:58,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58006602] [2023-11-29 02:18:58,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58006602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:58,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:58,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:58,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758121273] [2023-11-29 02:18:58,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:58,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:58,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:58,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:58,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:58,997 INFO L87 Difference]: Start difference. First operand 25615 states and 44914 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:59,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:59,446 INFO L93 Difference]: Finished difference Result 57522 states and 101104 transitions. [2023-11-29 02:18:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:59,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-11-29 02:18:59,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:59,509 INFO L225 Difference]: With dead ends: 57522 [2023-11-29 02:18:59,509 INFO L226 Difference]: Without dead ends: 39923 [2023-11-29 02:18:59,536 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 [2023-11-29 02:18:59,537 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 241 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:59,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 2647 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39923 states. [2023-11-29 02:19:00,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39923 to 39921. [2023-11-29 02:19:00,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39921 states, 39920 states have (on average 1.7498997995991985) internal successors, (69856), 39920 states have internal predecessors, (69856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39921 states to 39921 states and 69856 transitions. [2023-11-29 02:19:00,556 INFO L78 Accepts]: Start accepts. Automaton has 39921 states and 69856 transitions. Word has length 238 [2023-11-29 02:19:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:00,557 INFO L495 AbstractCegarLoop]: Abstraction has 39921 states and 69856 transitions. [2023-11-29 02:19:00,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:00,557 INFO L276 IsEmpty]: Start isEmpty. Operand 39921 states and 69856 transitions. [2023-11-29 02:19:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 02:19:00,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:00,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:00,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:19:00,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:00,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:00,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1573217210, now seen corresponding path program 1 times [2023-11-29 02:19:00,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:19:00,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487726899] [2023-11-29 02:19:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:00,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:19:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:00,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:00,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487726899] [2023-11-29 02:19:00,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487726899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:19:00,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:19:00,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:19:00,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343097860] [2023-11-29 02:19:00,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:00,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:19:00,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:00,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:19:00,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:19:00,763 INFO L87 Difference]: Start difference. First operand 39921 states and 69856 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:01,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:01,626 INFO L93 Difference]: Finished difference Result 78623 states and 137545 transitions. [2023-11-29 02:19:01,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:19:01,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-11-29 02:19:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:01,724 INFO L225 Difference]: With dead ends: 78623 [2023-11-29 02:19:01,724 INFO L226 Difference]: Without dead ends: 57193 [2023-11-29 02:19:01,747 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 [2023-11-29 02:19:01,748 INFO L413 NwaCegarLoop]: 1345 mSDtfsCounter, 217 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:01,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 2549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:19:01,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57193 states. [2023-11-29 02:19:02,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57193 to 57191. [2023-11-29 02:19:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57191 states, 57190 states have (on average 1.7430494841755553) internal successors, (99685), 57190 states have internal predecessors, (99685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:02,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57191 states to 57191 states and 99685 transitions. [2023-11-29 02:19:02,766 INFO L78 Accepts]: Start accepts. Automaton has 57191 states and 99685 transitions. Word has length 238 [2023-11-29 02:19:02,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:02,767 INFO L495 AbstractCegarLoop]: Abstraction has 57191 states and 99685 transitions. [2023-11-29 02:19:02,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:02,767 INFO L276 IsEmpty]: Start isEmpty. Operand 57191 states and 99685 transitions. [2023-11-29 02:19:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 02:19:02,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:02,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:02,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:19:02,773 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:02,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:02,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1318339770, now seen corresponding path program 1 times [2023-11-29 02:19:02,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:19:02,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982918978] [2023-11-29 02:19:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:02,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:19:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:02,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982918978] [2023-11-29 02:19:02,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982918978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:19:02,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:19:02,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:19:02,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103190972] [2023-11-29 02:19:02,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:02,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:19:02,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:02,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:19:02,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:19:02,883 INFO L87 Difference]: Start difference. First operand 57191 states and 99685 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:03,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:03,853 INFO L93 Difference]: Finished difference Result 111989 states and 195215 transitions. [2023-11-29 02:19:03,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:19:03,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-11-29 02:19:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:03,962 INFO L225 Difference]: With dead ends: 111989 [2023-11-29 02:19:03,962 INFO L226 Difference]: Without dead ends: 81427 [2023-11-29 02:19:03,983 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 [2023-11-29 02:19:03,983 INFO L413 NwaCegarLoop]: 1325 mSDtfsCounter, 209 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:03,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2530 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:19:04,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81427 states. [2023-11-29 02:19:05,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81427 to 81425. [2023-11-29 02:19:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81425 states, 81424 states have (on average 1.736158872077029) internal successors, (141365), 81424 states have internal predecessors, (141365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81425 states to 81425 states and 141365 transitions. [2023-11-29 02:19:05,358 INFO L78 Accepts]: Start accepts. Automaton has 81425 states and 141365 transitions. Word has length 238 [2023-11-29 02:19:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:05,359 INFO L495 AbstractCegarLoop]: Abstraction has 81425 states and 141365 transitions. [2023-11-29 02:19:05,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:05,359 INFO L276 IsEmpty]: Start isEmpty. Operand 81425 states and 141365 transitions. [2023-11-29 02:19:05,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 02:19:05,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:05,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:05,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:19:05,363 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:05,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:05,364 INFO L85 PathProgramCache]: Analyzing trace with hash -67222323, now seen corresponding path program 1 times [2023-11-29 02:19:05,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:19:05,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900172104] [2023-11-29 02:19:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:05,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:19:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:05,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900172104] [2023-11-29 02:19:05,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900172104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:19:05,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:19:05,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:19:05,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923835019] [2023-11-29 02:19:05,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:05,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:19:05,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:05,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:19:05,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:19:05,518 INFO L87 Difference]: Start difference. First operand 81425 states and 141365 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:07,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:07,622 INFO L93 Difference]: Finished difference Result 266655 states and 463318 transitions. [2023-11-29 02:19:07,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:19:07,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-11-29 02:19:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:08,002 INFO L225 Difference]: With dead ends: 266655 [2023-11-29 02:19:08,002 INFO L226 Difference]: Without dead ends: 186125 [2023-11-29 02:19:08,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:19:08,214 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 771 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:08,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 3891 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:19:08,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186125 states. [2023-11-29 02:19:10,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186125 to 133515. [2023-11-29 02:19:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133515 states, 133514 states have (on average 1.731151789325464) internal successors, (231133), 133514 states have internal predecessors, (231133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133515 states to 133515 states and 231133 transitions. [2023-11-29 02:19:11,234 INFO L78 Accepts]: Start accepts. Automaton has 133515 states and 231133 transitions. Word has length 238 [2023-11-29 02:19:11,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:11,234 INFO L495 AbstractCegarLoop]: Abstraction has 133515 states and 231133 transitions. [2023-11-29 02:19:11,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand 133515 states and 231133 transitions. [2023-11-29 02:19:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 02:19:11,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:11,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:11,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 02:19:11,239 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:11,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:11,240 INFO L85 PathProgramCache]: Analyzing trace with hash -177765702, now seen corresponding path program 1 times [2023-11-29 02:19:11,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:19:11,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039766214] [2023-11-29 02:19:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:11,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:19:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:11,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:11,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039766214] [2023-11-29 02:19:11,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039766214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:19:11,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:19:11,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:19:11,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944304607] [2023-11-29 02:19:11,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:11,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:19:11,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:11,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:19:11,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:19:11,395 INFO L87 Difference]: Start difference. First operand 133515 states and 231133 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:13,493 INFO L93 Difference]: Finished difference Result 298015 states and 515529 transitions. [2023-11-29 02:19:13,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:19:13,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-11-29 02:19:13,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:13,923 INFO L225 Difference]: With dead ends: 298015 [2023-11-29 02:19:13,923 INFO L226 Difference]: Without dead ends: 205195 [2023-11-29 02:19:13,976 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 [2023-11-29 02:19:13,977 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 225 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:13,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 2592 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:19:14,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205195 states. [2023-11-29 02:19:17,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205195 to 205193. [2023-11-29 02:19:17,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205193 states, 205192 states have (on average 1.7210709969199578) internal successors, (353150), 205192 states have internal predecessors, (353150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205193 states to 205193 states and 353150 transitions. [2023-11-29 02:19:17,958 INFO L78 Accepts]: Start accepts. Automaton has 205193 states and 353150 transitions. Word has length 238 [2023-11-29 02:19:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:17,959 INFO L495 AbstractCegarLoop]: Abstraction has 205193 states and 353150 transitions. [2023-11-29 02:19:17,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 205193 states and 353150 transitions. [2023-11-29 02:19:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 02:19:17,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:17,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:17,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 02:19:17,962 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:17,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:17,962 INFO L85 PathProgramCache]: Analyzing trace with hash 343581114, now seen corresponding path program 1 times [2023-11-29 02:19:17,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:19:17,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274871268] [2023-11-29 02:19:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:17,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:19:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:18,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:18,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274871268] [2023-11-29 02:19:18,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274871268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:19:18,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:19:18,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:19:18,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022081892] [2023-11-29 02:19:18,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:18,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:19:18,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:19:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:19:18,099 INFO L87 Difference]: Start difference. First operand 205193 states and 353150 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:21,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:21,482 INFO L93 Difference]: Finished difference Result 456992 states and 785610 transitions. [2023-11-29 02:19:21,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:19:21,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-11-29 02:19:21,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:21,988 INFO L225 Difference]: With dead ends: 456992 [2023-11-29 02:19:21,988 INFO L226 Difference]: Without dead ends: 313684 [2023-11-29 02:19:22,260 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 [2023-11-29 02:19:22,260 INFO L413 NwaCegarLoop]: 1434 mSDtfsCounter, 233 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:22,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 2636 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:19:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313684 states. [2023-11-29 02:19:27,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313684 to 313682. [2023-11-29 02:19:27,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313682 states, 313681 states have (on average 1.7089654776668015) internal successors, (536070), 313681 states have internal predecessors, (536070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:28,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313682 states to 313682 states and 536070 transitions. [2023-11-29 02:19:28,043 INFO L78 Accepts]: Start accepts. Automaton has 313682 states and 536070 transitions. Word has length 238 [2023-11-29 02:19:28,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:28,044 INFO L495 AbstractCegarLoop]: Abstraction has 313682 states and 536070 transitions. [2023-11-29 02:19:28,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:28,044 INFO L276 IsEmpty]: Start isEmpty. Operand 313682 states and 536070 transitions. [2023-11-29 02:19:28,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-29 02:19:28,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:28,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:28,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 02:19:28,046 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:28,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:28,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2135856390, now seen corresponding path program 1 times [2023-11-29 02:19:28,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:19:28,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141515182] [2023-11-29 02:19:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:28,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:19:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:28,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:28,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141515182] [2023-11-29 02:19:28,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141515182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:19:28,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:19:28,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:19:28,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759221972] [2023-11-29 02:19:28,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:28,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:19:28,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:28,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:19:28,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:19:28,184 INFO L87 Difference]: Start difference. First operand 313682 states and 536070 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:34,995 INFO L93 Difference]: Finished difference Result 1027769 states and 1757853 transitions. [2023-11-29 02:19:34,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:19:34,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2023-11-29 02:19:34,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:36,353 INFO L225 Difference]: With dead ends: 1027769 [2023-11-29 02:19:36,353 INFO L226 Difference]: Without dead ends: 714686 [2023-11-29 02:19:36,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:19:36,515 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 769 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:36,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 3893 Invalid, 56 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:19:37,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714686 states. [2023-11-29 02:19:46,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714686 to 513013. [2023-11-29 02:19:46,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513013 states, 513012 states have (on average 1.7028958386938318) internal successors, (873606), 513012 states have internal predecessors, (873606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:47,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513013 states to 513013 states and 873606 transitions. [2023-11-29 02:19:47,695 INFO L78 Accepts]: Start accepts. Automaton has 513013 states and 873606 transitions. Word has length 239 [2023-11-29 02:19:47,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:47,696 INFO L495 AbstractCegarLoop]: Abstraction has 513013 states and 873606 transitions. [2023-11-29 02:19:47,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:47,696 INFO L276 IsEmpty]: Start isEmpty. Operand 513013 states and 873606 transitions. [2023-11-29 02:19:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-29 02:19:47,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:47,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:47,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 02:19:47,698 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:47,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1044639102, now seen corresponding path program 1 times [2023-11-29 02:19:47,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:19:47,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810273824] [2023-11-29 02:19:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:47,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:19:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:48,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:48,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810273824] [2023-11-29 02:19:48,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810273824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:19:48,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:19:48,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:19:48,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480415632] [2023-11-29 02:19:48,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:19:48,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:19:48,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:48,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:19:48,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:19:48,699 INFO L87 Difference]: Start difference. First operand 513013 states and 873606 transitions. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:54,439 INFO L93 Difference]: Finished difference Result 1025429 states and 1746162 transitions. [2023-11-29 02:19:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:19:54,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2023-11-29 02:19:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:55,382 INFO L225 Difference]: With dead ends: 1025429 [2023-11-29 02:19:55,382 INFO L226 Difference]: Without dead ends: 513015 [2023-11-29 02:19:55,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:19:55,535 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 219 mSDsluCounter, 5960 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 7192 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:55,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 7192 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:19:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513015 states. [2023-11-29 02:20:03,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513015 to 513013. [2023-11-29 02:20:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513013 states, 513012 states have (on average 1.6968043632507621) internal successors, (870481), 513012 states have internal predecessors, (870481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:05,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513013 states to 513013 states and 870481 transitions. [2023-11-29 02:20:05,194 INFO L78 Accepts]: Start accepts. Automaton has 513013 states and 870481 transitions. Word has length 241 [2023-11-29 02:20:05,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:05,194 INFO L495 AbstractCegarLoop]: Abstraction has 513013 states and 870481 transitions. [2023-11-29 02:20:05,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:05,194 INFO L276 IsEmpty]: Start isEmpty. Operand 513013 states and 870481 transitions. [2023-11-29 02:20:05,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-29 02:20:05,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:05,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:05,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 02:20:05,197 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:05,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:05,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1121947574, now seen corresponding path program 1 times [2023-11-29 02:20:05,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:05,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544127587] [2023-11-29 02:20:05,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:05,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:20:05,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:05,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544127587] [2023-11-29 02:20:05,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544127587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:05,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:05,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:20:05,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848393155] [2023-11-29 02:20:05,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:05,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:20:05,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:05,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:20:05,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:20:05,669 INFO L87 Difference]: Start difference. First operand 513013 states and 870481 transitions. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:15,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:15,969 INFO L93 Difference]: Finished difference Result 1516885 states and 2575344 transitions. [2023-11-29 02:20:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:20:15,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 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 244 [2023-11-29 02:20:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:17,669 INFO L225 Difference]: With dead ends: 1516885 [2023-11-29 02:20:17,669 INFO L226 Difference]: Without dead ends: 1004471 [2023-11-29 02:20:17,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:20:17,905 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 1061 mSDsluCounter, 4796 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:17,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 6016 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:20:19,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004471 states. [2023-11-29 02:20:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004471 to 1004469. [2023-11-29 02:20:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004469 states, 1004468 states have (on average 1.6880697045600257) internal successors, (1695612), 1004468 states have internal predecessors, (1695612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004469 states to 1004469 states and 1695612 transitions. [2023-11-29 02:20:36,838 INFO L78 Accepts]: Start accepts. Automaton has 1004469 states and 1695612 transitions. Word has length 244 [2023-11-29 02:20:36,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:36,839 INFO L495 AbstractCegarLoop]: Abstraction has 1004469 states and 1695612 transitions. [2023-11-29 02:20:36,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:36,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1004469 states and 1695612 transitions. [2023-11-29 02:20:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-29 02:20:36,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:36,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:36,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 02:20:36,841 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:36,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash -435302471, now seen corresponding path program 1 times [2023-11-29 02:20:36,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:36,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875458265] [2023-11-29 02:20:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:36,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:20:37,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:37,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875458265] [2023-11-29 02:20:37,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875458265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:20:37,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:20:37,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:20:37,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764929313] [2023-11-29 02:20:37,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:20:37,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:20:37,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:20:37,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:20:37,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:20:37,901 INFO L87 Difference]: Start difference. First operand 1004469 states and 1695612 transitions. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:45,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:45,672 INFO L93 Difference]: Finished difference Result 1034645 states and 1735845 transitions. [2023-11-29 02:20:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:20:45,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2023-11-29 02:20:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:47,122 INFO L225 Difference]: With dead ends: 1034645 [2023-11-29 02:20:47,123 INFO L226 Difference]: Without dead ends: 1034643 [2023-11-29 02:20:47,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:20:47,248 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 1 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3687 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:47,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3687 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:20:47,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034643 states. [2023-11-29 02:21:02,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034643 to 1024585. [2023-11-29 02:21:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024585 states, 1024584 states have (on average 1.6744815456809787) internal successors, (1715647), 1024584 states have internal predecessors, (1715647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024585 states to 1024585 states and 1715647 transitions. [2023-11-29 02:21:06,857 INFO L78 Accepts]: Start accepts. Automaton has 1024585 states and 1715647 transitions. Word has length 245 [2023-11-29 02:21:06,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:21:06,857 INFO L495 AbstractCegarLoop]: Abstraction has 1024585 states and 1715647 transitions. [2023-11-29 02:21:06,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1024585 states and 1715647 transitions. [2023-11-29 02:21:06,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-11-29 02:21:06,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:21:06,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:21:06,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 02:21:06,866 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:21:06,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:06,866 INFO L85 PathProgramCache]: Analyzing trace with hash 104211052, now seen corresponding path program 1 times [2023-11-29 02:21:06,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:06,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180330590] [2023-11-29 02:21:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:06,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:21:07,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:07,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180330590] [2023-11-29 02:21:07,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180330590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:07,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:07,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:21:07,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646914688] [2023-11-29 02:21:07,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:07,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:07,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:07,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:07,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:07,040 INFO L87 Difference]: Start difference. First operand 1024585 states and 1715647 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)