./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/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_e4fd387b-dcc0-461d-9d21-64413ea3afaa/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/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_e4fd387b-dcc0-461d-9d21-64413ea3afaa/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 35eb4fe61244b47e62120cf84d8eaed931ae7a7b0a5140717764703691b11b75 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:30:00,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:30:00,951 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:30:00,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:30:00,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:30:00,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:30:00,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:30:00,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:30:00,984 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:30:00,984 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:30:00,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:30:00,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:30:00,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:30:00,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:30:00,987 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:30:00,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:30:00,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:30:00,989 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:30:00,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:30:00,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:30:00,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:30:00,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:30:00,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:30:00,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:30:00,992 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:30:00,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:30:00,993 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:30:00,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:30:00,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:30:00,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:30:00,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:30:00,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:30:00,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:30:00,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:30:00,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:30:00,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:30:00,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:30:00,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:30:00,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:30:00,998 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:30:00,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:30:00,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:30:00,998 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_e4fd387b-dcc0-461d-9d21-64413ea3afaa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35eb4fe61244b47e62120cf84d8eaed931ae7a7b0a5140717764703691b11b75 [2023-11-29 00:30:01,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:30:01,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:30:01,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:30:01,243 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:30:01,244 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:30:01,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-11-29 00:30:03,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:30:04,222 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:30:04,223 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-11-29 00:30:04,236 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/bin/uautomizer-verify-BQ2R08f2Ya/data/daf07eea3/03e83d1ca3d64933aebd4fb311ad5548/FLAG1ed26c215 [2023-11-29 00:30:04,249 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/bin/uautomizer-verify-BQ2R08f2Ya/data/daf07eea3/03e83d1ca3d64933aebd4fb311ad5548 [2023-11-29 00:30:04,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:30:04,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:30:04,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:30:04,255 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:30:04,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:30:04,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6ffe9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04, skipping insertion in model container [2023-11-29 00:30:04,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,326 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:30:04,564 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_e4fd387b-dcc0-461d-9d21-64413ea3afaa/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2023-11-29 00:30:04,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:30:04,655 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:30:04,724 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_e4fd387b-dcc0-461d-9d21-64413ea3afaa/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2023-11-29 00:30:04,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:30:04,782 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:30:04,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04 WrapperNode [2023-11-29 00:30:04,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:30:04,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:30:04,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:30:04,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:30:04,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,844 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1009 [2023-11-29 00:30:04,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:30:04,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:30:04,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:30:04,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:30:04,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,857 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,877 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 00:30:04,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:30:04,924 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:30:04,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:30:04,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:30:04,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (1/1) ... [2023-11-29 00:30:04,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:30:04,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:04,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:30:04,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fd387b-dcc0-461d-9d21-64413ea3afaa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:30:05,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:30:05,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:30:05,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:30:05,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:30:05,185 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:30:05,188 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:30:05,911 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:30:05,951 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:30:05,952 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 00:30:05,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:30:05 BoogieIcfgContainer [2023-11-29 00:30:05,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:30:05,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:30:05,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:30:05,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:30:05,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:30:04" (1/3) ... [2023-11-29 00:30:05,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b633db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:30:05, skipping insertion in model container [2023-11-29 00:30:05,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:30:04" (2/3) ... [2023-11-29 00:30:05,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b633db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:30:05, skipping insertion in model container [2023-11-29 00:30:05,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:30:05" (3/3) ... [2023-11-29 00:30:05,960 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-11-29 00:30:05,974 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:30:05,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:30:06,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:30:06,027 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;@23221fea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:30:06,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:30:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 246 states have (on average 1.7317073170731707) internal successors, (426), 247 states have internal predecessors, (426), 0 states have call successors, (0), 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 00:30:06,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 00:30:06,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:06,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:06,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:06,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1145068229, now seen corresponding path program 1 times [2023-11-29 00:30:06,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:06,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534494137] [2023-11-29 00:30:06,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:06,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:06,650 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 00:30:06,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:06,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534494137] [2023-11-29 00:30:06,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534494137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:06,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:06,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:30:06,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3583694] [2023-11-29 00:30:06,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:06,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:30:06,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:30:06,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:30:06,685 INFO L87 Difference]: Start difference. First operand has 248 states, 246 states have (on average 1.7317073170731707) internal successors, (426), 247 states have internal predecessors, (426), 0 states have call successors, (0), 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 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:07,067 INFO L93 Difference]: Finished difference Result 1111 states and 1808 transitions. [2023-11-29 00:30:07,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:30:07,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-29 00:30:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:07,089 INFO L225 Difference]: With dead ends: 1111 [2023-11-29 00:30:07,089 INFO L226 Difference]: Without dead ends: 983 [2023-11-29 00:30:07,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:30:07,097 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 4174 mSDsluCounter, 3223 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4174 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:07,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4174 Valid, 3642 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:30:07,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2023-11-29 00:30:07,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 381. [2023-11-29 00:30:07,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.5) internal successors, (570), 380 states have internal predecessors, (570), 0 states have call successors, (0), 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 00:30:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 570 transitions. [2023-11-29 00:30:07,180 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 570 transitions. Word has length 95 [2023-11-29 00:30:07,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:07,180 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 570 transitions. [2023-11-29 00:30:07,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:07,181 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 570 transitions. [2023-11-29 00:30:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 00:30:07,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:07,185 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] [2023-11-29 00:30:07,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:30:07,186 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:07,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1462518266, now seen corresponding path program 1 times [2023-11-29 00:30:07,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:07,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126331381] [2023-11-29 00:30:07,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:07,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:07,559 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 00:30:07,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126331381] [2023-11-29 00:30:07,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126331381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:07,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:07,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:30:07,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134345239] [2023-11-29 00:30:07,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:07,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:30:07,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:07,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:30:07,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:30:07,563 INFO L87 Difference]: Start difference. First operand 381 states and 570 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:07,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:07,984 INFO L93 Difference]: Finished difference Result 1908 states and 2954 transitions. [2023-11-29 00:30:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:30:07,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-11-29 00:30:07,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:07,994 INFO L225 Difference]: With dead ends: 1908 [2023-11-29 00:30:07,994 INFO L226 Difference]: Without dead ends: 1622 [2023-11-29 00:30:07,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:30:07,998 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 2179 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:07,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2179 Valid, 1822 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:30:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2023-11-29 00:30:08,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1612. [2023-11-29 00:30:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1611 states have (on average 1.5450031036623215) internal successors, (2489), 1611 states have internal predecessors, (2489), 0 states have call successors, (0), 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 00:30:08,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2489 transitions. [2023-11-29 00:30:08,055 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2489 transitions. Word has length 96 [2023-11-29 00:30:08,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:08,056 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2489 transitions. [2023-11-29 00:30:08,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2489 transitions. [2023-11-29 00:30:08,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 00:30:08,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:08,063 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] [2023-11-29 00:30:08,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:30:08,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:08,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash -897412766, now seen corresponding path program 1 times [2023-11-29 00:30:08,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:08,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148510039] [2023-11-29 00:30:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:08,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:08,217 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 00:30:08,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:08,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148510039] [2023-11-29 00:30:08,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148510039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:08,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:08,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:30:08,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920603958] [2023-11-29 00:30:08,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:08,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:30:08,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:08,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:30:08,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:30:08,220 INFO L87 Difference]: Start difference. First operand 1612 states and 2489 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:08,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:08,521 INFO L93 Difference]: Finished difference Result 4340 states and 6772 transitions. [2023-11-29 00:30:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:30:08,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-29 00:30:08,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:08,536 INFO L225 Difference]: With dead ends: 4340 [2023-11-29 00:30:08,536 INFO L226 Difference]: Without dead ends: 2814 [2023-11-29 00:30:08,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:30:08,539 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1367 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:08,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 342 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:30:08,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2023-11-29 00:30:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2023-11-29 00:30:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2811 states have (on average 1.5528281750266808) internal successors, (4365), 2811 states have internal predecessors, (4365), 0 states have call successors, (0), 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 00:30:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4365 transitions. [2023-11-29 00:30:08,593 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4365 transitions. Word has length 97 [2023-11-29 00:30:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:08,593 INFO L495 AbstractCegarLoop]: Abstraction has 2812 states and 4365 transitions. [2023-11-29 00:30:08,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4365 transitions. [2023-11-29 00:30:08,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 00:30:08,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:08,596 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] [2023-11-29 00:30:08,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:30:08,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:08,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:08,598 INFO L85 PathProgramCache]: Analyzing trace with hash -625314319, now seen corresponding path program 1 times [2023-11-29 00:30:08,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:08,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352397813] [2023-11-29 00:30:08,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:08,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:08,743 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 00:30:08,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:08,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352397813] [2023-11-29 00:30:08,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352397813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:08,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:08,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:30:08,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124289361] [2023-11-29 00:30:08,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:08,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:30:08,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:08,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:30:08,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:30:08,746 INFO L87 Difference]: Start difference. First operand 2812 states and 4365 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:09,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:09,046 INFO L93 Difference]: Finished difference Result 7796 states and 12183 transitions. [2023-11-29 00:30:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:30:09,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-29 00:30:09,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:09,067 INFO L225 Difference]: With dead ends: 7796 [2023-11-29 00:30:09,067 INFO L226 Difference]: Without dead ends: 5100 [2023-11-29 00:30:09,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:30:09,072 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1329 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:09,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 344 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:30:09,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2023-11-29 00:30:09,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 5098. [2023-11-29 00:30:09,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5098 states, 5097 states have (on average 1.554639984304493) internal successors, (7924), 5097 states have internal predecessors, (7924), 0 states have call successors, (0), 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 00:30:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5098 states to 5098 states and 7924 transitions. [2023-11-29 00:30:09,162 INFO L78 Accepts]: Start accepts. Automaton has 5098 states and 7924 transitions. Word has length 97 [2023-11-29 00:30:09,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:09,162 INFO L495 AbstractCegarLoop]: Abstraction has 5098 states and 7924 transitions. [2023-11-29 00:30:09,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:09,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5098 states and 7924 transitions. [2023-11-29 00:30:09,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 00:30:09,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:09,165 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] [2023-11-29 00:30:09,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:30:09,166 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:09,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:09,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1301277233, now seen corresponding path program 1 times [2023-11-29 00:30:09,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:09,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119405882] [2023-11-29 00:30:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:09,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:09,295 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 00:30:09,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:09,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119405882] [2023-11-29 00:30:09,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119405882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:09,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:09,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:30:09,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449536954] [2023-11-29 00:30:09,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:09,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:30:09,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:09,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:30:09,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:30:09,298 INFO L87 Difference]: Start difference. First operand 5098 states and 7924 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:09,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:09,612 INFO L93 Difference]: Finished difference Result 14364 states and 22444 transitions. [2023-11-29 00:30:09,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:30:09,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-29 00:30:09,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:09,649 INFO L225 Difference]: With dead ends: 14364 [2023-11-29 00:30:09,649 INFO L226 Difference]: Without dead ends: 9460 [2023-11-29 00:30:09,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:30:09,656 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1279 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:09,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 357 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:30:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9460 states. [2023-11-29 00:30:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9460 to 9458. [2023-11-29 00:30:09,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9458 states, 9457 states have (on average 1.5558845299777941) internal successors, (14714), 9457 states have internal predecessors, (14714), 0 states have call successors, (0), 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 00:30:09,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9458 states to 9458 states and 14714 transitions. [2023-11-29 00:30:09,825 INFO L78 Accepts]: Start accepts. Automaton has 9458 states and 14714 transitions. Word has length 97 [2023-11-29 00:30:09,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:09,825 INFO L495 AbstractCegarLoop]: Abstraction has 9458 states and 14714 transitions. [2023-11-29 00:30:09,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:09,825 INFO L276 IsEmpty]: Start isEmpty. Operand 9458 states and 14714 transitions. [2023-11-29 00:30:09,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 00:30:09,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:09,829 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] [2023-11-29 00:30:09,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:30:09,829 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:09,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:09,829 INFO L85 PathProgramCache]: Analyzing trace with hash 739298496, now seen corresponding path program 1 times [2023-11-29 00:30:09,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:09,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460628221] [2023-11-29 00:30:09,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:09,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:09,962 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 00:30:09,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:09,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460628221] [2023-11-29 00:30:09,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460628221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:09,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:09,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:30:09,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99161182] [2023-11-29 00:30:09,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:09,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:30:09,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:09,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:30:09,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:30:09,964 INFO L87 Difference]: Start difference. First operand 9458 states and 14714 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:10,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:10,290 INFO L93 Difference]: Finished difference Result 27517 states and 42909 transitions. [2023-11-29 00:30:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:30:10,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-29 00:30:10,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:10,348 INFO L225 Difference]: With dead ends: 27517 [2023-11-29 00:30:10,348 INFO L226 Difference]: Without dead ends: 18212 [2023-11-29 00:30:10,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:30:10,360 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1285 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:10,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 346 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:30:10,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18212 states. [2023-11-29 00:30:10,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18212 to 18210. [2023-11-29 00:30:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18210 states, 18209 states have (on average 1.5524191333955737) internal successors, (28268), 18209 states have internal predecessors, (28268), 0 states have call successors, (0), 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 00:30:10,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18210 states to 18210 states and 28268 transitions. [2023-11-29 00:30:10,698 INFO L78 Accepts]: Start accepts. Automaton has 18210 states and 28268 transitions. Word has length 97 [2023-11-29 00:30:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:10,703 INFO L495 AbstractCegarLoop]: Abstraction has 18210 states and 28268 transitions. [2023-11-29 00:30:10,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:10,704 INFO L276 IsEmpty]: Start isEmpty. Operand 18210 states and 28268 transitions. [2023-11-29 00:30:10,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 00:30:10,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:10,711 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] [2023-11-29 00:30:10,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:30:10,711 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:10,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash -479289581, now seen corresponding path program 1 times [2023-11-29 00:30:10,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:10,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376084068] [2023-11-29 00:30:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:10,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:10,831 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 00:30:10,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:10,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376084068] [2023-11-29 00:30:10,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376084068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:10,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:10,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:30:10,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49278670] [2023-11-29 00:30:10,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:10,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:30:10,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:10,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:30:10,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:30:10,834 INFO L87 Difference]: Start difference. First operand 18210 states and 28268 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:11,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:11,267 INFO L93 Difference]: Finished difference Result 54167 states and 84193 transitions. [2023-11-29 00:30:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:30:11,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-29 00:30:11,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:11,342 INFO L225 Difference]: With dead ends: 54167 [2023-11-29 00:30:11,342 INFO L226 Difference]: Without dead ends: 36020 [2023-11-29 00:30:11,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:30:11,360 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1371 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:11,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 342 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:30:11,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36020 states. [2023-11-29 00:30:11,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36020 to 36018. [2023-11-29 00:30:11,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36018 states, 36017 states have (on average 1.545742288363828) internal successors, (55673), 36017 states have internal predecessors, (55673), 0 states have call successors, (0), 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 00:30:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36018 states to 36018 states and 55673 transitions. [2023-11-29 00:30:12,032 INFO L78 Accepts]: Start accepts. Automaton has 36018 states and 55673 transitions. Word has length 97 [2023-11-29 00:30:12,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:12,032 INFO L495 AbstractCegarLoop]: Abstraction has 36018 states and 55673 transitions. [2023-11-29 00:30:12,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:12,033 INFO L276 IsEmpty]: Start isEmpty. Operand 36018 states and 55673 transitions. [2023-11-29 00:30:12,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 00:30:12,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:12,043 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] [2023-11-29 00:30:12,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:30:12,044 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:12,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:12,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1066320748, now seen corresponding path program 1 times [2023-11-29 00:30:12,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:12,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189203213] [2023-11-29 00:30:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:12,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:12,205 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 00:30:12,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:12,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189203213] [2023-11-29 00:30:12,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189203213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:12,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:12,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:30:12,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330759921] [2023-11-29 00:30:12,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:12,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:30:12,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:30:12,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:30:12,208 INFO L87 Difference]: Start difference. First operand 36018 states and 55673 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:12,837 INFO L93 Difference]: Finished difference Result 102358 states and 158349 transitions. [2023-11-29 00:30:12,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:30:12,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-11-29 00:30:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:13,020 INFO L225 Difference]: With dead ends: 102358 [2023-11-29 00:30:13,020 INFO L226 Difference]: Without dead ends: 66419 [2023-11-29 00:30:13,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:30:13,045 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1404 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:13,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 345 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:30:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66419 states. [2023-11-29 00:30:13,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66419 to 66417. [2023-11-29 00:30:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66417 states, 66416 states have (on average 1.5414809684413395) internal successors, (102379), 66416 states have internal predecessors, (102379), 0 states have call successors, (0), 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 00:30:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66417 states to 66417 states and 102379 transitions. [2023-11-29 00:30:14,165 INFO L78 Accepts]: Start accepts. Automaton has 66417 states and 102379 transitions. Word has length 98 [2023-11-29 00:30:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:14,165 INFO L495 AbstractCegarLoop]: Abstraction has 66417 states and 102379 transitions. [2023-11-29 00:30:14,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 66417 states and 102379 transitions. [2023-11-29 00:30:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 00:30:14,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:14,173 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] [2023-11-29 00:30:14,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:30:14,173 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:14,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash -712706726, now seen corresponding path program 1 times [2023-11-29 00:30:14,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:14,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60364675] [2023-11-29 00:30:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:14,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:14,381 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 00:30:14,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:14,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60364675] [2023-11-29 00:30:14,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60364675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:14,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:14,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:30:14,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538070675] [2023-11-29 00:30:14,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:14,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:30:14,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:14,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:30:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:30:14,383 INFO L87 Difference]: Start difference. First operand 66417 states and 102379 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:14,829 INFO L93 Difference]: Finished difference Result 132467 states and 203532 transitions. [2023-11-29 00:30:14,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:30:14,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-11-29 00:30:14,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:14,975 INFO L225 Difference]: With dead ends: 132467 [2023-11-29 00:30:14,975 INFO L226 Difference]: Without dead ends: 132465 [2023-11-29 00:30:15,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:30:15,133 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 344 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:15,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1416 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:30:15,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132465 states. [2023-11-29 00:30:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132465 to 67825. [2023-11-29 00:30:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67825 states, 67824 states have (on average 1.5302400330266572) internal successors, (103787), 67824 states have internal predecessors, (103787), 0 states have call successors, (0), 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 00:30:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67825 states to 67825 states and 103787 transitions. [2023-11-29 00:30:16,169 INFO L78 Accepts]: Start accepts. Automaton has 67825 states and 103787 transitions. Word has length 98 [2023-11-29 00:30:16,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:16,169 INFO L495 AbstractCegarLoop]: Abstraction has 67825 states and 103787 transitions. [2023-11-29 00:30:16,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:16,169 INFO L276 IsEmpty]: Start isEmpty. Operand 67825 states and 103787 transitions. [2023-11-29 00:30:16,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 00:30:16,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:16,179 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] [2023-11-29 00:30:16,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:30:16,179 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:16,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash -292952510, now seen corresponding path program 1 times [2023-11-29 00:30:16,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:16,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187525156] [2023-11-29 00:30:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:16,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:16,398 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 00:30:16,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:16,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187525156] [2023-11-29 00:30:16,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187525156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:16,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:16,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:30:16,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854578969] [2023-11-29 00:30:16,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:16,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:30:16,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:16,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:30:16,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:30:16,400 INFO L87 Difference]: Start difference. First operand 67825 states and 103787 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:16,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:16,884 INFO L93 Difference]: Finished difference Result 192565 states and 293933 transitions. [2023-11-29 00:30:16,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:30:16,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-11-29 00:30:16,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:17,033 INFO L225 Difference]: With dead ends: 192565 [2023-11-29 00:30:17,034 INFO L226 Difference]: Without dead ends: 126515 [2023-11-29 00:30:17,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:30:17,333 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 236 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:17,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 737 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:30:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126515 states. [2023-11-29 00:30:18,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126515 to 126513. [2023-11-29 00:30:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126513 states, 126512 states have (on average 1.5184883647401037) internal successors, (192107), 126512 states have internal predecessors, (192107), 0 states have call successors, (0), 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 00:30:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126513 states to 126513 states and 192107 transitions. [2023-11-29 00:30:18,961 INFO L78 Accepts]: Start accepts. Automaton has 126513 states and 192107 transitions. Word has length 99 [2023-11-29 00:30:18,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:18,961 INFO L495 AbstractCegarLoop]: Abstraction has 126513 states and 192107 transitions. [2023-11-29 00:30:18,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 126513 states and 192107 transitions. [2023-11-29 00:30:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:30:18,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:18,973 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] [2023-11-29 00:30:18,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:30:18,974 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:18,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:18,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1411737375, now seen corresponding path program 1 times [2023-11-29 00:30:18,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:18,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753484505] [2023-11-29 00:30:18,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:18,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:19,053 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 00:30:19,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:19,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753484505] [2023-11-29 00:30:19,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753484505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:19,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:19,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:30:19,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814343329] [2023-11-29 00:30:19,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:19,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:30:19,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:19,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:30:19,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:30:19,055 INFO L87 Difference]: Start difference. First operand 126513 states and 192107 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:20,012 INFO L93 Difference]: Finished difference Result 294991 states and 448047 transitions. [2023-11-29 00:30:20,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:30:20,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:30:20,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:20,464 INFO L225 Difference]: With dead ends: 294991 [2023-11-29 00:30:20,464 INFO L226 Difference]: Without dead ends: 179567 [2023-11-29 00:30:20,528 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 00:30:20,528 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 247 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:20,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 670 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:30:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179567 states. [2023-11-29 00:30:22,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179567 to 125870. [2023-11-29 00:30:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125870 states, 125869 states have (on average 1.5083698130596095) internal successors, (189857), 125869 states have internal predecessors, (189857), 0 states have call successors, (0), 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 00:30:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125870 states to 125870 states and 189857 transitions. [2023-11-29 00:30:22,526 INFO L78 Accepts]: Start accepts. Automaton has 125870 states and 189857 transitions. Word has length 100 [2023-11-29 00:30:22,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:22,527 INFO L495 AbstractCegarLoop]: Abstraction has 125870 states and 189857 transitions. [2023-11-29 00:30:22,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:22,527 INFO L276 IsEmpty]: Start isEmpty. Operand 125870 states and 189857 transitions. [2023-11-29 00:30:22,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:30:22,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:22,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:22,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:30:22,535 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:22,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash -94808926, now seen corresponding path program 1 times [2023-11-29 00:30:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471091359] [2023-11-29 00:30:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:22,590 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 00:30:22,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471091359] [2023-11-29 00:30:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471091359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:22,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:22,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:30:22,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807360999] [2023-11-29 00:30:22,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:22,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:30:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:22,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:30:22,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:30:22,592 INFO L87 Difference]: Start difference. First operand 125870 states and 189857 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:23,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:23,500 INFO L93 Difference]: Finished difference Result 278549 states and 419580 transitions. [2023-11-29 00:30:23,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:30:23,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:30:23,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:23,691 INFO L225 Difference]: With dead ends: 278549 [2023-11-29 00:30:23,691 INFO L226 Difference]: Without dead ends: 163861 [2023-11-29 00:30:23,714 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 00:30:23,716 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 239 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:23,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 655 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:30:23,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163861 states. [2023-11-29 00:30:25,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163861 to 163026. [2023-11-29 00:30:25,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163026 states, 163025 states have (on average 1.490703879773041) internal successors, (243022), 163025 states have internal predecessors, (243022), 0 states have call successors, (0), 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 00:30:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163026 states to 163026 states and 243022 transitions. [2023-11-29 00:30:25,683 INFO L78 Accepts]: Start accepts. Automaton has 163026 states and 243022 transitions. Word has length 100 [2023-11-29 00:30:25,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:25,683 INFO L495 AbstractCegarLoop]: Abstraction has 163026 states and 243022 transitions. [2023-11-29 00:30:25,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 163026 states and 243022 transitions. [2023-11-29 00:30:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:30:25,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:25,698 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] [2023-11-29 00:30:25,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:30:25,699 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:25,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:25,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1803675282, now seen corresponding path program 1 times [2023-11-29 00:30:25,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:25,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482569864] [2023-11-29 00:30:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:25,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:25,789 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 00:30:25,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:25,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482569864] [2023-11-29 00:30:25,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482569864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:25,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:25,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:30:25,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957993969] [2023-11-29 00:30:25,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:25,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:30:25,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:25,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:30:25,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:30:25,791 INFO L87 Difference]: Start difference. First operand 163026 states and 243022 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:26,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:26,411 INFO L93 Difference]: Finished difference Result 215108 states and 320206 transitions. [2023-11-29 00:30:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:30:26,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:30:26,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:26,998 INFO L225 Difference]: With dead ends: 215108 [2023-11-29 00:30:26,999 INFO L226 Difference]: Without dead ends: 177858 [2023-11-29 00:30:27,035 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 00:30:27,036 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 200 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:27,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 656 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:30:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177858 states. [2023-11-29 00:30:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177858 to 160576. [2023-11-29 00:30:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160576 states, 160575 states have (on average 1.471885411801339) internal successors, (236348), 160575 states have internal predecessors, (236348), 0 states have call successors, (0), 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 00:30:29,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160576 states to 160576 states and 236348 transitions. [2023-11-29 00:30:29,029 INFO L78 Accepts]: Start accepts. Automaton has 160576 states and 236348 transitions. Word has length 100 [2023-11-29 00:30:29,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:29,030 INFO L495 AbstractCegarLoop]: Abstraction has 160576 states and 236348 transitions. [2023-11-29 00:30:29,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:29,030 INFO L276 IsEmpty]: Start isEmpty. Operand 160576 states and 236348 transitions. [2023-11-29 00:30:29,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:30:29,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:29,046 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] [2023-11-29 00:30:29,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:30:29,047 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:29,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash -136770783, now seen corresponding path program 1 times [2023-11-29 00:30:29,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:29,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715519221] [2023-11-29 00:30:29,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:29,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:29,143 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 00:30:29,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:29,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715519221] [2023-11-29 00:30:29,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715519221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:29,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:29,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:30:29,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10730021] [2023-11-29 00:30:29,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:29,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:30:29,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:29,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:30:29,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:30:29,145 INFO L87 Difference]: Start difference. First operand 160576 states and 236348 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:29,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:29,723 INFO L93 Difference]: Finished difference Result 250846 states and 369465 transitions. [2023-11-29 00:30:29,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:30:29,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:30:29,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:29,907 INFO L225 Difference]: With dead ends: 250846 [2023-11-29 00:30:29,908 INFO L226 Difference]: Without dead ends: 181828 [2023-11-29 00:30:29,960 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 00:30:29,961 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 206 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:29,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 651 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:30:30,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181828 states. [2023-11-29 00:30:32,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181828 to 180290. [2023-11-29 00:30:32,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180290 states, 180289 states have (on average 1.4523293157097772) internal successors, (261839), 180289 states have internal predecessors, (261839), 0 states have call successors, (0), 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 00:30:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180290 states to 180290 states and 261839 transitions. [2023-11-29 00:30:32,395 INFO L78 Accepts]: Start accepts. Automaton has 180290 states and 261839 transitions. Word has length 100 [2023-11-29 00:30:32,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:32,396 INFO L495 AbstractCegarLoop]: Abstraction has 180290 states and 261839 transitions. [2023-11-29 00:30:32,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:32,396 INFO L276 IsEmpty]: Start isEmpty. Operand 180290 states and 261839 transitions. [2023-11-29 00:30:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:30:32,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:32,413 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] [2023-11-29 00:30:32,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:30:32,413 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:32,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:32,414 INFO L85 PathProgramCache]: Analyzing trace with hash 854350722, now seen corresponding path program 1 times [2023-11-29 00:30:32,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:32,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709079983] [2023-11-29 00:30:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:32,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:30:32,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:32,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709079983] [2023-11-29 00:30:32,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709079983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:32,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:32,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:30:32,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353483549] [2023-11-29 00:30:32,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:32,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:30:32,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:32,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:30:32,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:30:32,857 INFO L87 Difference]: Start difference. First operand 180290 states and 261839 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:33,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:33,606 INFO L93 Difference]: Finished difference Result 336278 states and 488160 transitions. [2023-11-29 00:30:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:30:33,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:30:33,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:33,873 INFO L225 Difference]: With dead ends: 336278 [2023-11-29 00:30:33,873 INFO L226 Difference]: Without dead ends: 215548 [2023-11-29 00:30:33,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:30:33,949 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 216 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:33,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 649 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:30:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215548 states. [2023-11-29 00:30:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215548 to 213866. [2023-11-29 00:30:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213866 states, 213865 states have (on average 1.4295560283356323) internal successors, (305732), 213865 states have internal predecessors, (305732), 0 states have call successors, (0), 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 00:30:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213866 states to 213866 states and 305732 transitions. [2023-11-29 00:30:37,140 INFO L78 Accepts]: Start accepts. Automaton has 213866 states and 305732 transitions. Word has length 100 [2023-11-29 00:30:37,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:37,140 INFO L495 AbstractCegarLoop]: Abstraction has 213866 states and 305732 transitions. [2023-11-29 00:30:37,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:37,140 INFO L276 IsEmpty]: Start isEmpty. Operand 213866 states and 305732 transitions. [2023-11-29 00:30:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:30:37,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:37,150 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] [2023-11-29 00:30:37,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:30:37,150 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:37,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash 882546177, now seen corresponding path program 1 times [2023-11-29 00:30:37,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:37,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821769341] [2023-11-29 00:30:37,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:37,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:37,308 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 00:30:37,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:37,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821769341] [2023-11-29 00:30:37,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821769341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:37,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:37,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:30:37,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985363860] [2023-11-29 00:30:37,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:37,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:30:37,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:37,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:30:37,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:30:37,311 INFO L87 Difference]: Start difference. First operand 213866 states and 305732 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:39,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:39,020 INFO L93 Difference]: Finished difference Result 614232 states and 883624 transitions. [2023-11-29 00:30:39,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:30:39,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:30:39,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:39,667 INFO L225 Difference]: With dead ends: 614232 [2023-11-29 00:30:39,667 INFO L226 Difference]: Without dead ends: 522850 [2023-11-29 00:30:39,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:30:39,772 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 2709 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2709 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:39,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2709 Valid, 2313 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:30:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522850 states. [2023-11-29 00:30:43,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522850 to 304636. [2023-11-29 00:30:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304636 states, 304635 states have (on average 1.4293827038915423) internal successors, (435440), 304635 states have internal predecessors, (435440), 0 states have call successors, (0), 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 00:30:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304636 states to 304636 states and 435440 transitions. [2023-11-29 00:30:45,209 INFO L78 Accepts]: Start accepts. Automaton has 304636 states and 435440 transitions. Word has length 100 [2023-11-29 00:30:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:45,209 INFO L495 AbstractCegarLoop]: Abstraction has 304636 states and 435440 transitions. [2023-11-29 00:30:45,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:45,209 INFO L276 IsEmpty]: Start isEmpty. Operand 304636 states and 435440 transitions. [2023-11-29 00:30:45,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:30:45,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:45,227 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] [2023-11-29 00:30:45,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:30:45,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:45,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:45,228 INFO L85 PathProgramCache]: Analyzing trace with hash -927432862, now seen corresponding path program 1 times [2023-11-29 00:30:45,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:45,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888490210] [2023-11-29 00:30:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:45,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:45,430 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 00:30:45,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:45,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888490210] [2023-11-29 00:30:45,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888490210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:45,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:45,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:30:45,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807016112] [2023-11-29 00:30:45,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:45,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:30:45,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:45,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:30:45,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:30:45,432 INFO L87 Difference]: Start difference. First operand 304636 states and 435440 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:47,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:47,431 INFO L93 Difference]: Finished difference Result 647598 states and 930932 transitions. [2023-11-29 00:30:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:30:47,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:30:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:48,157 INFO L225 Difference]: With dead ends: 647598 [2023-11-29 00:30:48,157 INFO L226 Difference]: Without dead ends: 584920 [2023-11-29 00:30:48,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:30:48,258 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 3015 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3015 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:48,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3015 Valid, 2205 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:30:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584920 states. [2023-11-29 00:30:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584920 to 366794. [2023-11-29 00:30:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366794 states, 366793 states have (on average 1.4298964265948368) internal successors, (524476), 366793 states have internal predecessors, (524476), 0 states have call successors, (0), 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 00:30:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366794 states to 366794 states and 524476 transitions. [2023-11-29 00:30:54,206 INFO L78 Accepts]: Start accepts. Automaton has 366794 states and 524476 transitions. Word has length 100 [2023-11-29 00:30:54,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:54,207 INFO L495 AbstractCegarLoop]: Abstraction has 366794 states and 524476 transitions. [2023-11-29 00:30:54,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:54,207 INFO L276 IsEmpty]: Start isEmpty. Operand 366794 states and 524476 transitions. [2023-11-29 00:30:54,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:30:54,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:54,222 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] [2023-11-29 00:30:54,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:30:54,222 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:54,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:54,222 INFO L85 PathProgramCache]: Analyzing trace with hash 877275698, now seen corresponding path program 1 times [2023-11-29 00:30:54,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:54,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417483119] [2023-11-29 00:30:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:54,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:54,366 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 00:30:54,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:54,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417483119] [2023-11-29 00:30:54,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417483119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:54,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:54,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:30:54,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718893829] [2023-11-29 00:30:54,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:54,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:30:54,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:54,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:30:54,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:30:54,368 INFO L87 Difference]: Start difference. First operand 366794 states and 524476 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:56,347 INFO L93 Difference]: Finished difference Result 643410 states and 924026 transitions. [2023-11-29 00:30:56,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:30:56,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:30:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:57,526 INFO L225 Difference]: With dead ends: 643410 [2023-11-29 00:30:57,526 INFO L226 Difference]: Without dead ends: 625372 [2023-11-29 00:30:57,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:30:57,614 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 2825 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2825 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:57,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2825 Valid, 2410 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:30:57,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625372 states. [2023-11-29 00:31:02,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625372 to 384614. [2023-11-29 00:31:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384614 states, 384613 states have (on average 1.4300556663451314) internal successors, (550018), 384613 states have internal predecessors, (550018), 0 states have call successors, (0), 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 00:31:03,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384614 states to 384614 states and 550018 transitions. [2023-11-29 00:31:03,707 INFO L78 Accepts]: Start accepts. Automaton has 384614 states and 550018 transitions. Word has length 100 [2023-11-29 00:31:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:03,708 INFO L495 AbstractCegarLoop]: Abstraction has 384614 states and 550018 transitions. [2023-11-29 00:31:03,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:03,708 INFO L276 IsEmpty]: Start isEmpty. Operand 384614 states and 550018 transitions. [2023-11-29 00:31:03,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:31:03,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:03,727 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] [2023-11-29 00:31:03,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:31:03,727 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:03,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:03,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1667065119, now seen corresponding path program 1 times [2023-11-29 00:31:03,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:03,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229484483] [2023-11-29 00:31:03,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:03,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:03,922 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 00:31:03,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:03,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229484483] [2023-11-29 00:31:03,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229484483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:03,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:03,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:31:03,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861350179] [2023-11-29 00:31:03,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:03,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:31:03,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:03,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:31:03,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:31:03,924 INFO L87 Difference]: Start difference. First operand 384614 states and 550018 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:05,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:05,951 INFO L93 Difference]: Finished difference Result 683550 states and 981800 transitions. [2023-11-29 00:31:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:31:05,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:31:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:06,725 INFO L225 Difference]: With dead ends: 683550 [2023-11-29 00:31:06,725 INFO L226 Difference]: Without dead ends: 642904 [2023-11-29 00:31:06,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:31:06,837 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 2477 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2477 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:06,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2477 Valid, 2738 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:31:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642904 states. [2023-11-29 00:31:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642904 to 410034. [2023-11-29 00:31:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410034 states, 410033 states have (on average 1.430909219501845) internal successors, (586720), 410033 states have internal predecessors, (586720), 0 states have call successors, (0), 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 00:31:12,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410034 states to 410034 states and 586720 transitions. [2023-11-29 00:31:12,757 INFO L78 Accepts]: Start accepts. Automaton has 410034 states and 586720 transitions. Word has length 100 [2023-11-29 00:31:12,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:12,757 INFO L495 AbstractCegarLoop]: Abstraction has 410034 states and 586720 transitions. [2023-11-29 00:31:12,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 410034 states and 586720 transitions. [2023-11-29 00:31:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:31:12,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:12,771 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] [2023-11-29 00:31:12,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:31:12,771 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:12,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:12,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2146334914, now seen corresponding path program 1 times [2023-11-29 00:31:12,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:12,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855021422] [2023-11-29 00:31:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:12,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:12,947 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 00:31:12,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:12,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855021422] [2023-11-29 00:31:12,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855021422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:12,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:12,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:31:12,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154424357] [2023-11-29 00:31:12,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:12,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:31:12,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:12,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:31:12,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:31:12,950 INFO L87 Difference]: Start difference. First operand 410034 states and 586720 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:15,833 INFO L93 Difference]: Finished difference Result 829604 states and 1191834 transitions. [2023-11-29 00:31:15,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:31:15,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:31:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:16,741 INFO L225 Difference]: With dead ends: 829604 [2023-11-29 00:31:16,741 INFO L226 Difference]: Without dead ends: 733358 [2023-11-29 00:31:16,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:31:16,874 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 2519 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2519 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:16,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2519 Valid, 3205 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:31:17,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733358 states. [2023-11-29 00:31:22,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733358 to 473701. [2023-11-29 00:31:22,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473701 states, 473700 states have (on average 1.4312835127717964) internal successors, (677999), 473700 states have internal predecessors, (677999), 0 states have call successors, (0), 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 00:31:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473701 states to 473701 states and 677999 transitions. [2023-11-29 00:31:24,245 INFO L78 Accepts]: Start accepts. Automaton has 473701 states and 677999 transitions. Word has length 100 [2023-11-29 00:31:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:24,245 INFO L495 AbstractCegarLoop]: Abstraction has 473701 states and 677999 transitions. [2023-11-29 00:31:24,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 473701 states and 677999 transitions. [2023-11-29 00:31:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 00:31:24,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:24,258 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] [2023-11-29 00:31:24,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:31:24,258 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:24,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:24,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1761102777, now seen corresponding path program 1 times [2023-11-29 00:31:24,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:24,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618819826] [2023-11-29 00:31:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:24,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:24,423 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 00:31:24,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:24,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618819826] [2023-11-29 00:31:24,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618819826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:24,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:24,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:31:24,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802305521] [2023-11-29 00:31:24,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:24,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:31:24,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:24,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:31:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:31:24,426 INFO L87 Difference]: Start difference. First operand 473701 states and 677999 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:27,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:27,397 INFO L93 Difference]: Finished difference Result 934180 states and 1341131 transitions. [2023-11-29 00:31:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:31:27,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-11-29 00:31:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:28,519 INFO L225 Difference]: With dead ends: 934180 [2023-11-29 00:31:28,520 INFO L226 Difference]: Without dead ends: 828878 [2023-11-29 00:31:28,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:31:28,667 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 2525 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:28,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2525 Valid, 2813 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:31:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828878 states.