./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Barrel.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/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_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Barrel.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/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 64bit --witnessprinter.graph.data.programhash ae5f6e98a9adcbdf5e1e7125ae4ea5d0cf3bfadfc22b5bc300cef6d9a8d4cfbb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:56:01,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:56:01,774 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 01:56:01,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:56:01,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:56:01,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:56:01,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:56:01,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:56:01,805 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:56:01,806 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:56:01,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:56:01,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:56:01,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:56:01,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:56:01,809 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:56:01,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:56:01,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:56:01,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:56:01,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:56:01,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:56:01,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:56:01,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:56:01,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:56:01,814 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:56:01,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:56:01,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:56:01,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:56:01,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:56:01,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:56:01,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:56:01,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:56:01,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:56:01,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:56:01,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:56:01,818 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:56:01,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:56:01,818 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:56:01,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:56:01,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:56:01,819 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_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae5f6e98a9adcbdf5e1e7125ae4ea5d0cf3bfadfc22b5bc300cef6d9a8d4cfbb [2023-11-29 01:56:02,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:56:02,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:56:02,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:56:02,059 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:56:02,059 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:56:02,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Barrel.c [2023-11-29 01:56:04,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:56:04,983 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:56:04,983 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Barrel.c [2023-11-29 01:56:04,993 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/bin/uautomizer-verify-BQ2R08f2Ya/data/e3e944e7d/732b4dffee4943aea99be2798f42599f/FLAG61109b86c [2023-11-29 01:56:05,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/bin/uautomizer-verify-BQ2R08f2Ya/data/e3e944e7d/732b4dffee4943aea99be2798f42599f [2023-11-29 01:56:05,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:56:05,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:56:05,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:56:05,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:56:05,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:56:05,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a26879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05, skipping insertion in model container [2023-11-29 01:56:05,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,044 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:56:05,168 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_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Barrel.c[1248,1261] [2023-11-29 01:56:05,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:56:05,262 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:56:05,274 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_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Barrel.c[1248,1261] [2023-11-29 01:56:05,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:56:05,337 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:56:05,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05 WrapperNode [2023-11-29 01:56:05,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:56:05,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:56:05,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:56:05,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:56:05,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,443 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 626 [2023-11-29 01:56:05,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:56:05,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:56:05,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:56:05,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:56:05,456 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,497 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 01:56:05,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,524 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,540 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:56:05,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:56:05,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:56:05,552 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:56:05,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (1/1) ... [2023-11-29 01:56:05,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:56:05,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:56:05,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:56:05,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee90d121-c9c4-4eb2-abcd-a4c7f05b1d18/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:56:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:56:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:56:05,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:56:05,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:56:05,745 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:56:05,748 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:56:06,534 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:56:06,573 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:56:06,573 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:56:06,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:56:06 BoogieIcfgContainer [2023-11-29 01:56:06,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:56:06,577 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:56:06,577 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:56:06,580 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:56:06,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:56:05" (1/3) ... [2023-11-29 01:56:06,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311a4b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:56:06, skipping insertion in model container [2023-11-29 01:56:06,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:56:05" (2/3) ... [2023-11-29 01:56:06,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311a4b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:56:06, skipping insertion in model container [2023-11-29 01:56:06,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:56:06" (3/3) ... [2023-11-29 01:56:06,584 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Barrel.c [2023-11-29 01:56:06,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:56:06,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:56:06,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:56:06,666 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;@6b4c9301, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:56:06,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:56:06,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 117 states have (on average 1.6666666666666667) internal successors, (195), 118 states have internal predecessors, (195), 0 states have call successors, (0), 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 01:56:06,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:56:06,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:06,683 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] [2023-11-29 01:56:06,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:06,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:06,688 INFO L85 PathProgramCache]: Analyzing trace with hash -93789305, now seen corresponding path program 1 times [2023-11-29 01:56:06,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:06,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37131803] [2023-11-29 01:56:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:06,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:07,573 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 01:56:07,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:07,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37131803] [2023-11-29 01:56:07,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37131803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:07,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:07,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:56:07,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217928353] [2023-11-29 01:56:07,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:07,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:56:07,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:07,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:56:07,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:56:07,614 INFO L87 Difference]: Start difference. First operand has 119 states, 117 states have (on average 1.6666666666666667) internal successors, (195), 118 states have internal predecessors, (195), 0 states have call successors, (0), 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 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:07,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:07,669 INFO L93 Difference]: Finished difference Result 225 states and 371 transitions. [2023-11-29 01:56:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:56:07,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 01:56:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:07,681 INFO L225 Difference]: With dead ends: 225 [2023-11-29 01:56:07,681 INFO L226 Difference]: Without dead ends: 119 [2023-11-29 01:56:07,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:56:07,687 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:07,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 559 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:56:07,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-29 01:56:07,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-11-29 01:56:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.6355932203389831) internal successors, (193), 118 states have internal predecessors, (193), 0 states have call successors, (0), 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 01:56:07,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 193 transitions. [2023-11-29 01:56:07,728 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 193 transitions. Word has length 78 [2023-11-29 01:56:07,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:07,729 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 193 transitions. [2023-11-29 01:56:07,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 193 transitions. [2023-11-29 01:56:07,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 01:56:07,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:07,734 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] [2023-11-29 01:56:07,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:56:07,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:07,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:07,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1389224233, now seen corresponding path program 1 times [2023-11-29 01:56:07,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:07,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185684873] [2023-11-29 01:56:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:07,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:08,087 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 01:56:08,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:08,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185684873] [2023-11-29 01:56:08,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185684873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:08,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:08,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:56:08,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801111484] [2023-11-29 01:56:08,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:08,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:56:08,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:56:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:56:08,092 INFO L87 Difference]: Start difference. First operand 119 states and 193 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 01:56:08,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:08,126 INFO L93 Difference]: Finished difference Result 228 states and 369 transitions. [2023-11-29 01:56:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:56:08,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-11-29 01:56:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:08,128 INFO L225 Difference]: With dead ends: 228 [2023-11-29 01:56:08,128 INFO L226 Difference]: Without dead ends: 122 [2023-11-29 01:56:08,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:56:08,131 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:08,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 557 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:56:08,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-29 01:56:08,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2023-11-29 01:56:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.625) internal successors, (195), 120 states have internal predecessors, (195), 0 states have call successors, (0), 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 01:56:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 195 transitions. [2023-11-29 01:56:08,142 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 195 transitions. Word has length 79 [2023-11-29 01:56:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:08,143 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 195 transitions. [2023-11-29 01:56:08,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 01:56:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 195 transitions. [2023-11-29 01:56:08,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 01:56:08,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:08,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:08,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:56:08,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:08,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:08,147 INFO L85 PathProgramCache]: Analyzing trace with hash -94153759, now seen corresponding path program 1 times [2023-11-29 01:56:08,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:08,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719063239] [2023-11-29 01:56:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:08,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:08,707 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 01:56:08,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:08,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719063239] [2023-11-29 01:56:08,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719063239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:08,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:08,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:56:08,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960198525] [2023-11-29 01:56:08,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:08,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:56:08,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:08,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:56:08,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:56:08,711 INFO L87 Difference]: Start difference. First operand 121 states and 195 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 01:56:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:08,784 INFO L93 Difference]: Finished difference Result 337 states and 543 transitions. [2023-11-29 01:56:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:56:08,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-11-29 01:56:08,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:08,787 INFO L225 Difference]: With dead ends: 337 [2023-11-29 01:56:08,787 INFO L226 Difference]: Without dead ends: 229 [2023-11-29 01:56:08,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:56:08,790 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 299 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:08,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 863 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:56:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-29 01:56:08,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 124. [2023-11-29 01:56:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.6097560975609757) internal successors, (198), 123 states have internal predecessors, (198), 0 states have call successors, (0), 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 01:56:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 198 transitions. [2023-11-29 01:56:08,803 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 198 transitions. Word has length 80 [2023-11-29 01:56:08,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:08,803 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 198 transitions. [2023-11-29 01:56:08,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 01:56:08,804 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 198 transitions. [2023-11-29 01:56:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 01:56:08,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:08,806 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] [2023-11-29 01:56:08,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:56:08,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:08,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1680853603, now seen corresponding path program 1 times [2023-11-29 01:56:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:08,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125798685] [2023-11-29 01:56:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:08,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:10,861 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 01:56:10,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:10,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125798685] [2023-11-29 01:56:10,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125798685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:10,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:10,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:56:10,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956043405] [2023-11-29 01:56:10,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:10,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:56:10,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:10,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:56:10,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:56:10,864 INFO L87 Difference]: Start difference. First operand 124 states and 198 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 01:56:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:11,451 INFO L93 Difference]: Finished difference Result 777 states and 1236 transitions. [2023-11-29 01:56:11,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:56:11,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-11-29 01:56:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:11,456 INFO L225 Difference]: With dead ends: 777 [2023-11-29 01:56:11,456 INFO L226 Difference]: Without dead ends: 666 [2023-11-29 01:56:11,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:56:11,458 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1991 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:11,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1991 Valid, 1585 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:56:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-11-29 01:56:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 132. [2023-11-29 01:56:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.5877862595419847) internal successors, (208), 131 states have internal predecessors, (208), 0 states have call successors, (0), 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 01:56:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 208 transitions. [2023-11-29 01:56:11,473 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 208 transitions. Word has length 80 [2023-11-29 01:56:11,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:11,473 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 208 transitions. [2023-11-29 01:56:11,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 01:56:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 208 transitions. [2023-11-29 01:56:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:56:11,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:11,475 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] [2023-11-29 01:56:11,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:56:11,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:11,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:11,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1664441991, now seen corresponding path program 1 times [2023-11-29 01:56:11,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:11,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824525414] [2023-11-29 01:56:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:11,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:12,740 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 01:56:12,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:12,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824525414] [2023-11-29 01:56:12,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824525414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:12,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:12,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:56:12,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050267452] [2023-11-29 01:56:12,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:12,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:56:12,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:12,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:56:12,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:56:12,744 INFO L87 Difference]: Start difference. First operand 132 states and 208 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 01:56:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:13,275 INFO L93 Difference]: Finished difference Result 677 states and 1075 transitions. [2023-11-29 01:56:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:56:13,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-11-29 01:56:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:13,281 INFO L225 Difference]: With dead ends: 677 [2023-11-29 01:56:13,281 INFO L226 Difference]: Without dead ends: 566 [2023-11-29 01:56:13,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:56:13,283 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 1494 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:13,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1702 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:56:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-11-29 01:56:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 143. [2023-11-29 01:56:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5774647887323943) internal successors, (224), 142 states have internal predecessors, (224), 0 states have call successors, (0), 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 01:56:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 224 transitions. [2023-11-29 01:56:13,298 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 224 transitions. Word has length 81 [2023-11-29 01:56:13,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:13,299 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 224 transitions. [2023-11-29 01:56:13,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 01:56:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 224 transitions. [2023-11-29 01:56:13,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:56:13,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:13,301 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] [2023-11-29 01:56:13,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:56:13,302 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:13,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1898557879, now seen corresponding path program 1 times [2023-11-29 01:56:13,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:13,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013505427] [2023-11-29 01:56:13,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:14,216 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 01:56:14,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:14,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013505427] [2023-11-29 01:56:14,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013505427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:14,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:14,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:56:14,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378348025] [2023-11-29 01:56:14,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:14,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:56:14,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:56:14,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:56:14,219 INFO L87 Difference]: Start difference. First operand 143 states and 224 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 01:56:14,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:14,767 INFO L93 Difference]: Finished difference Result 612 states and 964 transitions. [2023-11-29 01:56:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:56:14,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-11-29 01:56:14,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:14,771 INFO L225 Difference]: With dead ends: 612 [2023-11-29 01:56:14,771 INFO L226 Difference]: Without dead ends: 501 [2023-11-29 01:56:14,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:56:14,773 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 867 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:14,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1699 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:56:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-11-29 01:56:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 149. [2023-11-29 01:56:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.5675675675675675) internal successors, (232), 148 states have internal predecessors, (232), 0 states have call successors, (0), 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 01:56:14,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 232 transitions. [2023-11-29 01:56:14,784 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 232 transitions. Word has length 81 [2023-11-29 01:56:14,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:14,785 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 232 transitions. [2023-11-29 01:56:14,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 01:56:14,785 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 232 transitions. [2023-11-29 01:56:14,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:56:14,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:14,787 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] [2023-11-29 01:56:14,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:56:14,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:14,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:14,788 INFO L85 PathProgramCache]: Analyzing trace with hash -388189091, now seen corresponding path program 1 times [2023-11-29 01:56:14,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:14,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216332290] [2023-11-29 01:56:14,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:14,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:15,584 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 01:56:15,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:15,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216332290] [2023-11-29 01:56:15,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216332290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:15,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:15,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:56:15,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396768269] [2023-11-29 01:56:15,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:15,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:56:15,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:15,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:56:15,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:56:15,586 INFO L87 Difference]: Start difference. First operand 149 states and 232 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 01:56:15,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:15,617 INFO L93 Difference]: Finished difference Result 391 states and 612 transitions. [2023-11-29 01:56:15,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:56:15,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-11-29 01:56:15,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:15,620 INFO L225 Difference]: With dead ends: 391 [2023-11-29 01:56:15,620 INFO L226 Difference]: Without dead ends: 266 [2023-11-29 01:56:15,620 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 01:56:15,621 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 332 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:15,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 570 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:56:15,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-29 01:56:15,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 148. [2023-11-29 01:56:15,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.5510204081632653) internal successors, (228), 147 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:15,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 228 transitions. [2023-11-29 01:56:15,630 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 228 transitions. Word has length 81 [2023-11-29 01:56:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:15,630 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 228 transitions. [2023-11-29 01:56:15,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 01:56:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 228 transitions. [2023-11-29 01:56:15,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:56:15,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:15,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:15,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:56:15,632 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:15,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1071228291, now seen corresponding path program 1 times [2023-11-29 01:56:15,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:15,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126667838] [2023-11-29 01:56:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:15,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:16,403 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 01:56:16,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:16,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126667838] [2023-11-29 01:56:16,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126667838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:16,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:16,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:56:16,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125602618] [2023-11-29 01:56:16,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:16,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:56:16,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:16,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:56:16,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:56:16,406 INFO L87 Difference]: Start difference. First operand 148 states and 228 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 01:56:16,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:16,437 INFO L93 Difference]: Finished difference Result 376 states and 586 transitions. [2023-11-29 01:56:16,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:56:16,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-11-29 01:56:16,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:16,439 INFO L225 Difference]: With dead ends: 376 [2023-11-29 01:56:16,440 INFO L226 Difference]: Without dead ends: 248 [2023-11-29 01:56:16,440 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 01:56:16,441 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 331 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:16,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 535 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:56:16,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-11-29 01:56:16,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 141. [2023-11-29 01:56:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.542857142857143) internal successors, (216), 140 states have internal predecessors, (216), 0 states have call successors, (0), 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 01:56:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 216 transitions. [2023-11-29 01:56:16,450 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 216 transitions. Word has length 81 [2023-11-29 01:56:16,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:16,450 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 216 transitions. [2023-11-29 01:56:16,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 01:56:16,451 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 216 transitions. [2023-11-29 01:56:16,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 01:56:16,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:16,452 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] [2023-11-29 01:56:16,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:56:16,452 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:16,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:16,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1785930839, now seen corresponding path program 1 times [2023-11-29 01:56:16,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:16,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432927891] [2023-11-29 01:56:16,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:16,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:17,434 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 01:56:17,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:17,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432927891] [2023-11-29 01:56:17,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432927891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:17,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:17,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:56:17,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723291935] [2023-11-29 01:56:17,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:17,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:56:17,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:56:17,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:56:17,437 INFO L87 Difference]: Start difference. First operand 141 states and 216 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 01:56:17,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:17,893 INFO L93 Difference]: Finished difference Result 686 states and 1073 transitions. [2023-11-29 01:56:17,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:56:17,894 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-11-29 01:56:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:17,899 INFO L225 Difference]: With dead ends: 686 [2023-11-29 01:56:17,899 INFO L226 Difference]: Without dead ends: 570 [2023-11-29 01:56:17,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:56:17,900 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1277 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:17,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 1760 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:56:17,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-11-29 01:56:17,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 149. [2023-11-29 01:56:17,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.5337837837837838) internal successors, (227), 148 states have internal predecessors, (227), 0 states have call successors, (0), 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 01:56:17,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 227 transitions. [2023-11-29 01:56:17,911 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 227 transitions. Word has length 82 [2023-11-29 01:56:17,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:17,912 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 227 transitions. [2023-11-29 01:56:17,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 01:56:17,912 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 227 transitions. [2023-11-29 01:56:17,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 01:56:17,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:17,913 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] [2023-11-29 01:56:17,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:56:17,914 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:17,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:17,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1829764203, now seen corresponding path program 1 times [2023-11-29 01:56:17,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:17,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391425010] [2023-11-29 01:56:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:17,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:18,977 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 01:56:18,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:18,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391425010] [2023-11-29 01:56:18,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391425010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:18,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:18,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 01:56:18,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313663731] [2023-11-29 01:56:18,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:18,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:56:18,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:18,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:56:18,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:56:18,980 INFO L87 Difference]: Start difference. First operand 149 states and 227 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 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 01:56:20,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:20,888 INFO L93 Difference]: Finished difference Result 1107 states and 1712 transitions. [2023-11-29 01:56:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 01:56:20,891 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-11-29 01:56:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:20,896 INFO L225 Difference]: With dead ends: 1107 [2023-11-29 01:56:20,896 INFO L226 Difference]: Without dead ends: 991 [2023-11-29 01:56:20,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=569, Invalid=2187, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 01:56:20,899 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 3252 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3252 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:20,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3252 Valid, 2442 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:56:20,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-11-29 01:56:20,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 159. [2023-11-29 01:56:20,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.5253164556962024) internal successors, (241), 158 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:20,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 241 transitions. [2023-11-29 01:56:20,913 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 241 transitions. Word has length 82 [2023-11-29 01:56:20,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:20,913 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 241 transitions. [2023-11-29 01:56:20,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 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 01:56:20,913 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 241 transitions. [2023-11-29 01:56:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 01:56:20,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:20,914 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] [2023-11-29 01:56:20,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:56:20,915 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:20,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1646938427, now seen corresponding path program 1 times [2023-11-29 01:56:20,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:20,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969044440] [2023-11-29 01:56:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:20,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:21,754 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 01:56:21,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:21,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969044440] [2023-11-29 01:56:21,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969044440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:21,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:21,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:56:21,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559166340] [2023-11-29 01:56:21,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:21,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:56:21,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:21,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:56:21,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:56:21,757 INFO L87 Difference]: Start difference. First operand 159 states and 241 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 01:56:22,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:22,215 INFO L93 Difference]: Finished difference Result 673 states and 1034 transitions. [2023-11-29 01:56:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:56:22,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-11-29 01:56:22,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:22,218 INFO L225 Difference]: With dead ends: 673 [2023-11-29 01:56:22,219 INFO L226 Difference]: Without dead ends: 548 [2023-11-29 01:56:22,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:56:22,220 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 826 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:22,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1937 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:56:22,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-11-29 01:56:22,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 166. [2023-11-29 01:56:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.5151515151515151) internal successors, (250), 165 states have internal predecessors, (250), 0 states have call successors, (0), 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 01:56:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 250 transitions. [2023-11-29 01:56:22,232 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 250 transitions. Word has length 82 [2023-11-29 01:56:22,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:22,232 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 250 transitions. [2023-11-29 01:56:22,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 01:56:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 250 transitions. [2023-11-29 01:56:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 01:56:22,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:22,233 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] [2023-11-29 01:56:22,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:56:22,234 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:22,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:22,234 INFO L85 PathProgramCache]: Analyzing trace with hash 895954541, now seen corresponding path program 1 times [2023-11-29 01:56:22,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:22,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373306349] [2023-11-29 01:56:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:22,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:22,992 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 01:56:22,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:22,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373306349] [2023-11-29 01:56:22,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373306349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:22,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:22,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:56:22,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756605479] [2023-11-29 01:56:22,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:22,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:56:22,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:22,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:56:22,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:56:22,995 INFO L87 Difference]: Start difference. First operand 166 states and 250 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:56:23,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:23,360 INFO L93 Difference]: Finished difference Result 750 states and 1161 transitions. [2023-11-29 01:56:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:56:23,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-11-29 01:56:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:23,364 INFO L225 Difference]: With dead ends: 750 [2023-11-29 01:56:23,364 INFO L226 Difference]: Without dead ends: 618 [2023-11-29 01:56:23,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:56:23,365 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1104 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:23,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 1666 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:56:23,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-11-29 01:56:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 177. [2023-11-29 01:56:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.5113636363636365) internal successors, (266), 176 states have internal predecessors, (266), 0 states have call successors, (0), 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 01:56:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 266 transitions. [2023-11-29 01:56:23,375 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 266 transitions. Word has length 83 [2023-11-29 01:56:23,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:23,375 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 266 transitions. [2023-11-29 01:56:23,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:56:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 266 transitions. [2023-11-29 01:56:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 01:56:23,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:23,376 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] [2023-11-29 01:56:23,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:56:23,376 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:23,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:23,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1329683627, now seen corresponding path program 1 times [2023-11-29 01:56:23,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:23,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568138047] [2023-11-29 01:56:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:23,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:24,273 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 01:56:24,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:24,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568138047] [2023-11-29 01:56:24,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568138047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:24,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:24,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 01:56:24,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203546511] [2023-11-29 01:56:24,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:24,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:56:24,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:24,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:56:24,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:56:24,276 INFO L87 Difference]: Start difference. First operand 177 states and 266 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:56:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:28,420 INFO L93 Difference]: Finished difference Result 1670 states and 2565 transitions. [2023-11-29 01:56:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-11-29 01:56:28,420 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-11-29 01:56:28,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:28,426 INFO L225 Difference]: With dead ends: 1670 [2023-11-29 01:56:28,427 INFO L226 Difference]: Without dead ends: 1538 [2023-11-29 01:56:28,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4756 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1922, Invalid=9850, Unknown=0, NotChecked=0, Total=11772 [2023-11-29 01:56:28,431 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 5860 mSDsluCounter, 2977 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5860 SdHoareTripleChecker+Valid, 3282 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:28,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5860 Valid, 3282 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:56:28,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2023-11-29 01:56:28,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 192. [2023-11-29 01:56:28,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.5078534031413613) internal successors, (288), 191 states have internal predecessors, (288), 0 states have call successors, (0), 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 01:56:28,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 288 transitions. [2023-11-29 01:56:28,449 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 288 transitions. Word has length 83 [2023-11-29 01:56:28,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:28,449 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 288 transitions. [2023-11-29 01:56:28,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:56:28,449 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 288 transitions. [2023-11-29 01:56:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 01:56:28,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:28,450 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] [2023-11-29 01:56:28,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:56:28,450 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:28,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1977850543, now seen corresponding path program 1 times [2023-11-29 01:56:28,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:28,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004241123] [2023-11-29 01:56:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:28,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:28,855 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 01:56:28,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:28,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004241123] [2023-11-29 01:56:28,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004241123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:28,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:28,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:56:28,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068044908] [2023-11-29 01:56:28,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:28,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:56:28,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:28,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:56:28,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:56:28,856 INFO L87 Difference]: Start difference. First operand 192 states and 288 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:56:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:28,881 INFO L93 Difference]: Finished difference Result 487 states and 741 transitions. [2023-11-29 01:56:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:56:28,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-11-29 01:56:28,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:28,884 INFO L225 Difference]: With dead ends: 487 [2023-11-29 01:56:28,884 INFO L226 Difference]: Without dead ends: 334 [2023-11-29 01:56:28,884 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 01:56:28,885 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 328 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:28,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 596 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:56:28,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-29 01:56:28,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 191. [2023-11-29 01:56:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.4947368421052631) internal successors, (284), 190 states have internal predecessors, (284), 0 states have call successors, (0), 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 01:56:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 284 transitions. [2023-11-29 01:56:28,897 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 284 transitions. Word has length 83 [2023-11-29 01:56:28,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:28,897 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 284 transitions. [2023-11-29 01:56:28,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:56:28,897 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 284 transitions. [2023-11-29 01:56:28,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 01:56:28,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:28,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:56:28,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:56:28,898 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:28,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:28,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2038780947, now seen corresponding path program 1 times [2023-11-29 01:56:28,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:28,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185914677] [2023-11-29 01:56:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:28,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:29,307 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 01:56:29,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185914677] [2023-11-29 01:56:29,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185914677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:29,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:29,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:56:29,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448510804] [2023-11-29 01:56:29,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:29,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:56:29,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:29,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:56:29,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:56:29,309 INFO L87 Difference]: Start difference. First operand 191 states and 284 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:56:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:29,343 INFO L93 Difference]: Finished difference Result 471 states and 710 transitions. [2023-11-29 01:56:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:56:29,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-11-29 01:56:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:29,345 INFO L225 Difference]: With dead ends: 471 [2023-11-29 01:56:29,345 INFO L226 Difference]: Without dead ends: 305 [2023-11-29 01:56:29,346 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 01:56:29,347 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 328 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:29,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 542 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:56:29,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-29 01:56:29,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 179. [2023-11-29 01:56:29,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.4719101123595506) internal successors, (262), 178 states have internal predecessors, (262), 0 states have call successors, (0), 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 01:56:29,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 262 transitions. [2023-11-29 01:56:29,359 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 262 transitions. Word has length 83 [2023-11-29 01:56:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:29,359 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 262 transitions. [2023-11-29 01:56:29,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:56:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 262 transitions. [2023-11-29 01:56:29,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 01:56:29,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:29,360 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] [2023-11-29 01:56:29,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:56:29,361 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:29,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:29,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1475259829, now seen corresponding path program 1 times [2023-11-29 01:56:29,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:29,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350467498] [2023-11-29 01:56:29,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:29,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:30,139 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 01:56:30,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:30,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350467498] [2023-11-29 01:56:30,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350467498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:30,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:30,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:56:30,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198436140] [2023-11-29 01:56:30,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:30,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:56:30,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:30,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:56:30,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:56:30,143 INFO L87 Difference]: Start difference. First operand 179 states and 262 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 01:56:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:30,541 INFO L93 Difference]: Finished difference Result 784 states and 1187 transitions. [2023-11-29 01:56:30,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:56:30,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-11-29 01:56:30,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:30,545 INFO L225 Difference]: With dead ends: 784 [2023-11-29 01:56:30,545 INFO L226 Difference]: Without dead ends: 640 [2023-11-29 01:56:30,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:56:30,546 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1189 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:30,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1699 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:56:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-11-29 01:56:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 187. [2023-11-29 01:56:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.467741935483871) internal successors, (273), 186 states have internal predecessors, (273), 0 states have call successors, (0), 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 01:56:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 273 transitions. [2023-11-29 01:56:30,561 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 273 transitions. Word has length 84 [2023-11-29 01:56:30,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:30,562 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 273 transitions. [2023-11-29 01:56:30,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 01:56:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 273 transitions. [2023-11-29 01:56:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 01:56:30,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:30,563 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] [2023-11-29 01:56:30,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:56:30,564 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:30,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:30,564 INFO L85 PathProgramCache]: Analyzing trace with hash -599240823, now seen corresponding path program 1 times [2023-11-29 01:56:30,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:30,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312512364] [2023-11-29 01:56:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:30,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:31,504 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 01:56:31,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:31,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312512364] [2023-11-29 01:56:31,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312512364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:31,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:31,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-29 01:56:31,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260146337] [2023-11-29 01:56:31,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:31,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:56:31,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:31,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:56:31,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:56:31,507 INFO L87 Difference]: Start difference. First operand 187 states and 273 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 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 01:56:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:40,635 INFO L93 Difference]: Finished difference Result 2263 states and 3374 transitions. [2023-11-29 01:56:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-11-29 01:56:40,636 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-11-29 01:56:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:40,644 INFO L225 Difference]: With dead ends: 2263 [2023-11-29 01:56:40,644 INFO L226 Difference]: Without dead ends: 2119 [2023-11-29 01:56:40,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17591 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=5334, Invalid=33672, Unknown=0, NotChecked=0, Total=39006 [2023-11-29 01:56:40,656 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 9447 mSDsluCounter, 3726 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9447 SdHoareTripleChecker+Valid, 4014 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:40,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9447 Valid, 4014 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:56:40,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2023-11-29 01:56:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 197. [2023-11-29 01:56:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.4642857142857142) internal successors, (287), 196 states have internal predecessors, (287), 0 states have call successors, (0), 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 01:56:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 287 transitions. [2023-11-29 01:56:40,673 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 287 transitions. Word has length 84 [2023-11-29 01:56:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:40,674 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 287 transitions. [2023-11-29 01:56:40,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 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 01:56:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 287 transitions. [2023-11-29 01:56:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 01:56:40,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:40,675 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] [2023-11-29 01:56:40,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:56:40,675 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:40,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1617061073, now seen corresponding path program 1 times [2023-11-29 01:56:40,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:40,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514644758] [2023-11-29 01:56:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:40,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:41,163 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 01:56:41,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:41,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514644758] [2023-11-29 01:56:41,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514644758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:41,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:41,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:56:41,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566016874] [2023-11-29 01:56:41,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:41,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:56:41,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:56:41,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:56:41,166 INFO L87 Difference]: Start difference. First operand 197 states and 287 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 01:56:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:41,549 INFO L93 Difference]: Finished difference Result 823 states and 1224 transitions. [2023-11-29 01:56:41,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:56:41,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-11-29 01:56:41,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:41,553 INFO L225 Difference]: With dead ends: 823 [2023-11-29 01:56:41,553 INFO L226 Difference]: Without dead ends: 670 [2023-11-29 01:56:41,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:56:41,554 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 819 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:41,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1926 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:56:41,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-11-29 01:56:41,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 204. [2023-11-29 01:56:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.458128078817734) internal successors, (296), 203 states have internal predecessors, (296), 0 states have call successors, (0), 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 01:56:41,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 296 transitions. [2023-11-29 01:56:41,570 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 296 transitions. Word has length 84 [2023-11-29 01:56:41,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:41,570 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 296 transitions. [2023-11-29 01:56:41,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 01:56:41,571 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 296 transitions. [2023-11-29 01:56:41,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 01:56:41,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:41,572 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] [2023-11-29 01:56:41,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:56:41,572 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:41,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:41,572 INFO L85 PathProgramCache]: Analyzing trace with hash -288993439, now seen corresponding path program 1 times [2023-11-29 01:56:41,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:41,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341608264] [2023-11-29 01:56:41,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:41,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:42,184 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 01:56:42,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:42,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341608264] [2023-11-29 01:56:42,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341608264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:42,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:42,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:56:42,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361889928] [2023-11-29 01:56:42,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:42,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:56:42,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:42,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:56:42,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:56:42,186 INFO L87 Difference]: Start difference. First operand 204 states and 296 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 01:56:42,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:42,576 INFO L93 Difference]: Finished difference Result 848 states and 1275 transitions. [2023-11-29 01:56:42,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:56:42,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-11-29 01:56:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:42,580 INFO L225 Difference]: With dead ends: 848 [2023-11-29 01:56:42,580 INFO L226 Difference]: Without dead ends: 688 [2023-11-29 01:56:42,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:56:42,580 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1157 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:42,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 1788 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:56:42,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-11-29 01:56:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 215. [2023-11-29 01:56:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4579439252336448) internal successors, (312), 214 states have internal predecessors, (312), 0 states have call successors, (0), 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 01:56:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 312 transitions. [2023-11-29 01:56:42,591 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 312 transitions. Word has length 85 [2023-11-29 01:56:42,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:42,591 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 312 transitions. [2023-11-29 01:56:42,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 01:56:42,592 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 312 transitions. [2023-11-29 01:56:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 01:56:42,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:42,592 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] [2023-11-29 01:56:42,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:56:42,592 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:42,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:42,593 INFO L85 PathProgramCache]: Analyzing trace with hash -770073697, now seen corresponding path program 1 times [2023-11-29 01:56:42,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:42,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115705507] [2023-11-29 01:56:42,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:42,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:43,422 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 01:56:43,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:43,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115705507] [2023-11-29 01:56:43,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115705507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:43,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:43,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 01:56:43,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783710681] [2023-11-29 01:56:43,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:43,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 01:56:43,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 01:56:43,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:56:43,424 INFO L87 Difference]: Start difference. First operand 215 states and 312 transitions. Second operand has 20 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 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 01:57:02,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:02,403 INFO L93 Difference]: Finished difference Result 3149 states and 4680 transitions. [2023-11-29 01:57:02,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 312 states. [2023-11-29 01:57:02,404 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-11-29 01:57:02,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:02,415 INFO L225 Difference]: With dead ends: 3149 [2023-11-29 01:57:02,415 INFO L226 Difference]: Without dead ends: 2989 [2023-11-29 01:57:02,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51634 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=12847, Invalid=95065, Unknown=0, NotChecked=0, Total=107912 [2023-11-29 01:57:02,425 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 14414 mSDsluCounter, 4456 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14414 SdHoareTripleChecker+Valid, 4735 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:02,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14414 Valid, 4735 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:57:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2023-11-29 01:57:02,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 230. [2023-11-29 01:57:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.4585152838427948) internal successors, (334), 229 states have internal predecessors, (334), 0 states have call successors, (0), 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 01:57:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 334 transitions. [2023-11-29 01:57:02,444 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 334 transitions. Word has length 85 [2023-11-29 01:57:02,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:02,445 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 334 transitions. [2023-11-29 01:57:02,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 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 01:57:02,445 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 334 transitions. [2023-11-29 01:57:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 01:57:02,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:02,446 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] [2023-11-29 01:57:02,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 01:57:02,446 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:02,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:02,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1551717819, now seen corresponding path program 1 times [2023-11-29 01:57:02,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:02,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619078768] [2023-11-29 01:57:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:02,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:02,960 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 01:57:02,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:02,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619078768] [2023-11-29 01:57:02,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619078768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:02,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:02,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:57:02,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030590479] [2023-11-29 01:57:02,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:02,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:57:02,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:02,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:57:02,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:57:02,962 INFO L87 Difference]: Start difference. First operand 230 states and 334 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 01:57:03,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:03,313 INFO L93 Difference]: Finished difference Result 939 states and 1393 transitions. [2023-11-29 01:57:03,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:57:03,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-11-29 01:57:03,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:03,318 INFO L225 Difference]: With dead ends: 939 [2023-11-29 01:57:03,318 INFO L226 Difference]: Without dead ends: 767 [2023-11-29 01:57:03,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:57:03,318 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 671 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:03,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 2399 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:57:03,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2023-11-29 01:57:03,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 239. [2023-11-29 01:57:03,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.453781512605042) internal successors, (346), 238 states have internal predecessors, (346), 0 states have call successors, (0), 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 01:57:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 346 transitions. [2023-11-29 01:57:03,335 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 346 transitions. Word has length 85 [2023-11-29 01:57:03,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:03,336 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 346 transitions. [2023-11-29 01:57:03,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 01:57:03,336 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 346 transitions. [2023-11-29 01:57:03,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 01:57:03,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:03,337 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] [2023-11-29 01:57:03,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 01:57:03,337 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:03,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:03,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1193313529, now seen corresponding path program 1 times [2023-11-29 01:57:03,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:03,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093353579] [2023-11-29 01:57:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:03,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:03,868 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 01:57:03,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:03,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093353579] [2023-11-29 01:57:03,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093353579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:03,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:03,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:57:03,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412809222] [2023-11-29 01:57:03,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:03,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:57:03,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:03,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:57:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:57:03,870 INFO L87 Difference]: Start difference. First operand 239 states and 346 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 01:57:03,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:03,907 INFO L93 Difference]: Finished difference Result 593 states and 872 transitions. [2023-11-29 01:57:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:57:03,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-11-29 01:57:03,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:03,911 INFO L225 Difference]: With dead ends: 593 [2023-11-29 01:57:03,911 INFO L226 Difference]: Without dead ends: 389 [2023-11-29 01:57:03,912 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 01:57:03,912 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 326 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:03,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 559 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:57:03,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-29 01:57:03,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 228. [2023-11-29 01:57:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.4317180616740088) internal successors, (325), 227 states have internal predecessors, (325), 0 states have call successors, (0), 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 01:57:03,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 325 transitions. [2023-11-29 01:57:03,924 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 325 transitions. Word has length 85 [2023-11-29 01:57:03,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:03,924 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 325 transitions. [2023-11-29 01:57:03,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 01:57:03,925 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 325 transitions. [2023-11-29 01:57:03,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:57:03,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:03,925 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] [2023-11-29 01:57:03,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 01:57:03,925 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:03,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1347005377, now seen corresponding path program 1 times [2023-11-29 01:57:03,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:03,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498870711] [2023-11-29 01:57:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:03,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:04,599 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 01:57:04,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:04,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498870711] [2023-11-29 01:57:04,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498870711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:04,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:04,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:57:04,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559852015] [2023-11-29 01:57:04,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:04,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:57:04,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:04,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:57:04,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:57:04,601 INFO L87 Difference]: Start difference. First operand 228 states and 325 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 01:57:04,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:04,904 INFO L93 Difference]: Finished difference Result 917 states and 1356 transitions. [2023-11-29 01:57:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:57:04,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-11-29 01:57:04,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:04,907 INFO L225 Difference]: With dead ends: 917 [2023-11-29 01:57:04,907 INFO L226 Difference]: Without dead ends: 738 [2023-11-29 01:57:04,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:57:04,908 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 889 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:04,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1700 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:57:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-11-29 01:57:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 239. [2023-11-29 01:57:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.4327731092436975) internal successors, (341), 238 states have internal predecessors, (341), 0 states have call successors, (0), 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 01:57:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 341 transitions. [2023-11-29 01:57:04,925 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 341 transitions. Word has length 86 [2023-11-29 01:57:04,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:04,925 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 341 transitions. [2023-11-29 01:57:04,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 01:57:04,926 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 341 transitions. [2023-11-29 01:57:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:57:04,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:04,926 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] [2023-11-29 01:57:04,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 01:57:04,927 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:04,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash 581267325, now seen corresponding path program 1 times [2023-11-29 01:57:04,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:04,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605298351] [2023-11-29 01:57:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:04,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:05,944 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 01:57:05,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:05,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605298351] [2023-11-29 01:57:05,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605298351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:05,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:05,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-29 01:57:05,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008415743] [2023-11-29 01:57:05,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:05,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:57:05,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:57:05,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:57:05,947 INFO L87 Difference]: Start difference. First operand 239 states and 341 transitions. Second operand has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 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 01:57:41,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:41,761 INFO L93 Difference]: Finished difference Result 4276 states and 6240 transitions. [2023-11-29 01:57:41,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 491 states. [2023-11-29 01:57:41,762 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-11-29 01:57:41,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:41,776 INFO L225 Difference]: With dead ends: 4276 [2023-11-29 01:57:41,776 INFO L226 Difference]: Without dead ends: 4097 [2023-11-29 01:57:41,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 509 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129120 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=27769, Invalid=232841, Unknown=0, NotChecked=0, Total=260610 [2023-11-29 01:57:41,796 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 20985 mSDsluCounter, 5063 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20985 SdHoareTripleChecker+Valid, 5329 SdHoareTripleChecker+Invalid, 2196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:41,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20985 Valid, 5329 Invalid, 2196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 01:57:41,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2023-11-29 01:57:41,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 254. [2023-11-29 01:57:41,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.434782608695652) internal successors, (363), 253 states have internal predecessors, (363), 0 states have call successors, (0), 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 01:57:41,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 363 transitions. [2023-11-29 01:57:41,851 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 363 transitions. Word has length 86 [2023-11-29 01:57:41,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:41,851 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 363 transitions. [2023-11-29 01:57:41,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 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 01:57:41,852 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 363 transitions. [2023-11-29 01:57:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:57:41,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:41,852 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] [2023-11-29 01:57:41,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 01:57:41,853 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:41,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:41,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1350287651, now seen corresponding path program 1 times [2023-11-29 01:57:41,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:41,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298806725] [2023-11-29 01:57:41,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:41,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:42,388 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 01:57:42,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:42,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298806725] [2023-11-29 01:57:42,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298806725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:42,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:42,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:57:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119508657] [2023-11-29 01:57:42,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:42,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:57:42,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:42,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:57:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:57:42,391 INFO L87 Difference]: Start difference. First operand 254 states and 363 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 01:57:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:42,784 INFO L93 Difference]: Finished difference Result 1039 states and 1518 transitions. [2023-11-29 01:57:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:57:42,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-11-29 01:57:42,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:42,789 INFO L225 Difference]: With dead ends: 1039 [2023-11-29 01:57:42,789 INFO L226 Difference]: Without dead ends: 848 [2023-11-29 01:57:42,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:57:42,790 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 663 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:42,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 2604 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:57:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2023-11-29 01:57:42,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 263. [2023-11-29 01:57:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.4312977099236641) internal successors, (375), 262 states have internal predecessors, (375), 0 states have call successors, (0), 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 01:57:42,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 375 transitions. [2023-11-29 01:57:42,810 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 375 transitions. Word has length 86 [2023-11-29 01:57:42,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:42,810 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 375 transitions. [2023-11-29 01:57:42,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 01:57:42,810 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 375 transitions. [2023-11-29 01:57:42,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:57:42,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:42,811 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] [2023-11-29 01:57:42,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 01:57:42,811 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:42,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:42,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1154695909, now seen corresponding path program 1 times [2023-11-29 01:57:42,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:42,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665392317] [2023-11-29 01:57:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:42,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:43,209 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 01:57:43,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:43,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665392317] [2023-11-29 01:57:43,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665392317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:43,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:43,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:57:43,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333637841] [2023-11-29 01:57:43,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:43,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:57:43,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:43,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:57:43,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:57:43,212 INFO L87 Difference]: Start difference. First operand 263 states and 375 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 01:57:43,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:43,248 INFO L93 Difference]: Finished difference Result 655 states and 949 transitions. [2023-11-29 01:57:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:57:43,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-11-29 01:57:43,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:43,250 INFO L225 Difference]: With dead ends: 655 [2023-11-29 01:57:43,251 INFO L226 Difference]: Without dead ends: 432 [2023-11-29 01:57:43,251 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 01:57:43,251 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 322 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:43,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 608 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:57:43,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-29 01:57:43,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 252. [2023-11-29 01:57:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.4103585657370519) internal successors, (354), 251 states have internal predecessors, (354), 0 states have call successors, (0), 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 01:57:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 354 transitions. [2023-11-29 01:57:43,263 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 354 transitions. Word has length 86 [2023-11-29 01:57:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:43,263 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 354 transitions. [2023-11-29 01:57:43,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 01:57:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 354 transitions. [2023-11-29 01:57:43,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 01:57:43,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:43,264 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] [2023-11-29 01:57:43,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 01:57:43,264 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:43,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:43,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1361314901, now seen corresponding path program 1 times [2023-11-29 01:57:43,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:43,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241952712] [2023-11-29 01:57:43,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:43,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:44,132 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 01:57:44,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:44,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241952712] [2023-11-29 01:57:44,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241952712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:44,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:44,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:57:44,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040582120] [2023-11-29 01:57:44,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:44,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:57:44,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:44,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:57:44,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:57:44,134 INFO L87 Difference]: Start difference. First operand 252 states and 354 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 01:57:44,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:44,578 INFO L93 Difference]: Finished difference Result 986 states and 1437 transitions. [2023-11-29 01:57:44,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:57:44,578 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-11-29 01:57:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:44,581 INFO L225 Difference]: With dead ends: 986 [2023-11-29 01:57:44,581 INFO L226 Difference]: Without dead ends: 788 [2023-11-29 01:57:44,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:57:44,582 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 966 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:44,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 1695 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:57:44,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-11-29 01:57:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 263. [2023-11-29 01:57:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.4122137404580153) internal successors, (370), 262 states have internal predecessors, (370), 0 states have call successors, (0), 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 01:57:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 370 transitions. [2023-11-29 01:57:44,595 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 370 transitions. Word has length 87 [2023-11-29 01:57:44,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:44,595 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 370 transitions. [2023-11-29 01:57:44,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 01:57:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 370 transitions. [2023-11-29 01:57:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 01:57:44,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:44,596 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] [2023-11-29 01:57:44,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 01:57:44,596 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:44,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1609461395, now seen corresponding path program 1 times [2023-11-29 01:57:44,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:44,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574472586] [2023-11-29 01:57:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:44,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:45,813 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 01:57:45,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574472586] [2023-11-29 01:57:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574472586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:45,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:45,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-29 01:57:45,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460319831] [2023-11-29 01:57:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:45,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:57:45,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:45,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:57:45,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:57:45,815 INFO L87 Difference]: Start difference. First operand 263 states and 370 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 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 01:58:46,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:46,890 INFO L93 Difference]: Finished difference Result 5305 states and 7624 transitions. [2023-11-29 01:58:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 660 states. [2023-11-29 01:58:46,890 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-11-29 01:58:46,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:46,907 INFO L225 Difference]: With dead ends: 5305 [2023-11-29 01:58:46,907 INFO L226 Difference]: Without dead ends: 5107 [2023-11-29 01:58:46,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 681 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234529 ImplicationChecksByTransitivity, 56.4s TimeCoverageRelationStatistics Valid=47641, Invalid=418165, Unknown=0, NotChecked=0, Total=465806 [2023-11-29 01:58:46,935 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 24411 mSDsluCounter, 6552 mSDsCounter, 0 mSdLazyCounter, 3163 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24411 SdHoareTripleChecker+Valid, 6912 SdHoareTripleChecker+Invalid, 3428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 3163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:46,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24411 Valid, 6912 Invalid, 3428 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [265 Valid, 3163 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 01:58:46,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5107 states. [2023-11-29 01:58:46,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5107 to 278. [2023-11-29 01:58:46,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.4151624548736461) internal successors, (392), 277 states have internal predecessors, (392), 0 states have call successors, (0), 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 01:58:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 392 transitions. [2023-11-29 01:58:46,963 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 392 transitions. Word has length 87 [2023-11-29 01:58:46,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:46,963 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 392 transitions. [2023-11-29 01:58:46,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 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 01:58:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 392 transitions. [2023-11-29 01:58:46,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 01:58:46,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:46,964 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] [2023-11-29 01:58:46,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 01:58:46,964 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:46,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:46,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1632338745, now seen corresponding path program 1 times [2023-11-29 01:58:46,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:46,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163691476] [2023-11-29 01:58:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:46,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:47,384 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 01:58:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163691476] [2023-11-29 01:58:47,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163691476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:47,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:47,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:58:47,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122279684] [2023-11-29 01:58:47,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:47,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:58:47,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:47,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:58:47,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:58:47,386 INFO L87 Difference]: Start difference. First operand 278 states and 392 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 01:58:47,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:47,420 INFO L93 Difference]: Finished difference Result 705 states and 1013 transitions. [2023-11-29 01:58:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:58:47,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-11-29 01:58:47,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:47,422 INFO L225 Difference]: With dead ends: 705 [2023-11-29 01:58:47,422 INFO L226 Difference]: Without dead ends: 486 [2023-11-29 01:58:47,422 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 01:58:47,423 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 322 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:47,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 589 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:58:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-29 01:58:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 277. [2023-11-29 01:58:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.4057971014492754) internal successors, (388), 276 states have internal predecessors, (388), 0 states have call successors, (0), 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 01:58:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 388 transitions. [2023-11-29 01:58:47,435 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 388 transitions. Word has length 87 [2023-11-29 01:58:47,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:47,435 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 388 transitions. [2023-11-29 01:58:47,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 01:58:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 388 transitions. [2023-11-29 01:58:47,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 01:58:47,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:47,436 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] [2023-11-29 01:58:47,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 01:58:47,436 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:47,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:47,437 INFO L85 PathProgramCache]: Analyzing trace with hash -140626437, now seen corresponding path program 1 times [2023-11-29 01:58:47,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:47,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295137028] [2023-11-29 01:58:47,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:47,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:47,860 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 01:58:47,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:47,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295137028] [2023-11-29 01:58:47,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295137028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:47,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:47,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:58:47,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372725500] [2023-11-29 01:58:47,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:47,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:58:47,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:47,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:58:47,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:58:47,862 INFO L87 Difference]: Start difference. First operand 277 states and 388 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 01:58:47,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:47,903 INFO L93 Difference]: Finished difference Result 689 states and 982 transitions. [2023-11-29 01:58:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:58:47,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-11-29 01:58:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:47,904 INFO L225 Difference]: With dead ends: 689 [2023-11-29 01:58:47,904 INFO L226 Difference]: Without dead ends: 457 [2023-11-29 01:58:47,904 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 01:58:47,905 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 318 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:47,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 617 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:58:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-11-29 01:58:47,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 265. [2023-11-29 01:58:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.3863636363636365) internal successors, (366), 264 states have internal predecessors, (366), 0 states have call successors, (0), 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 01:58:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 366 transitions. [2023-11-29 01:58:47,917 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 366 transitions. Word has length 87 [2023-11-29 01:58:47,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:47,918 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 366 transitions. [2023-11-29 01:58:47,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 01:58:47,918 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 366 transitions. [2023-11-29 01:58:47,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 01:58:47,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:47,918 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] [2023-11-29 01:58:47,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 01:58:47,919 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:47,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:47,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1173476813, now seen corresponding path program 1 times [2023-11-29 01:58:47,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:47,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568415087] [2023-11-29 01:58:47,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:47,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:48,559 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 01:58:48,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:48,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568415087] [2023-11-29 01:58:48,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568415087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:48,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:48,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:58:48,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488522694] [2023-11-29 01:58:48,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:48,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:58:48,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:48,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:58:48,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:58:48,561 INFO L87 Difference]: Start difference. First operand 265 states and 366 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 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 01:58:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:48,921 INFO L93 Difference]: Finished difference Result 1020 states and 1463 transitions. [2023-11-29 01:58:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:58:48,922 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-11-29 01:58:48,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:48,923 INFO L225 Difference]: With dead ends: 1020 [2023-11-29 01:58:48,923 INFO L226 Difference]: Without dead ends: 810 [2023-11-29 01:58:48,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:58:48,924 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 833 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:48,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1793 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:58:48,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2023-11-29 01:58:48,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 273. [2023-11-29 01:58:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.3860294117647058) internal successors, (377), 272 states have internal predecessors, (377), 0 states have call successors, (0), 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 01:58:48,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 377 transitions. [2023-11-29 01:58:48,939 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 377 transitions. Word has length 88 [2023-11-29 01:58:48,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:48,939 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 377 transitions. [2023-11-29 01:58:48,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 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 01:58:48,940 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 377 transitions. [2023-11-29 01:58:48,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 01:58:48,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:48,940 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] [2023-11-29 01:58:48,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 01:58:48,941 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:48,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:48,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2092131185, now seen corresponding path program 1 times [2023-11-29 01:58:48,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:48,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745065588] [2023-11-29 01:58:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:48,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:50,185 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 01:58:50,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:50,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745065588] [2023-11-29 01:58:50,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745065588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:50,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:50,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2023-11-29 01:58:50,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938460730] [2023-11-29 01:58:50,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:50,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:58:50,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:50,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:58:50,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:58:50,187 INFO L87 Difference]: Start difference. First operand 273 states and 377 transitions. Second operand has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:47,143 INFO L93 Difference]: Finished difference Result 7610 states and 10725 transitions. [2023-11-29 02:00:47,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1130 states. [2023-11-29 02:00:47,144 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-11-29 02:00:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:47,154 INFO L225 Difference]: With dead ends: 7610 [2023-11-29 02:00:47,154 INFO L226 Difference]: Without dead ends: 7400 [2023-11-29 02:00:47,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682867 ImplicationChecksByTransitivity, 110.0s TimeCoverageRelationStatistics Valid=111978, Invalid=1223202, Unknown=0, NotChecked=0, Total=1335180 [2023-11-29 02:00:47,209 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 40934 mSDsluCounter, 6041 mSDsCounter, 0 mSdLazyCounter, 3266 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40934 SdHoareTripleChecker+Valid, 6277 SdHoareTripleChecker+Invalid, 3811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 3266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:47,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40934 Valid, 6277 Invalid, 3811 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [545 Valid, 3266 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 02:00:47,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2023-11-29 02:00:47,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 283. [2023-11-29 02:00:47,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.3865248226950355) internal successors, (391), 282 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:47,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 391 transitions. [2023-11-29 02:00:47,249 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 391 transitions. Word has length 88 [2023-11-29 02:00:47,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:47,249 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 391 transitions. [2023-11-29 02:00:47,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:47,249 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 391 transitions. [2023-11-29 02:00:47,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 02:00:47,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:47,250 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] [2023-11-29 02:00:47,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 02:00:47,250 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:47,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:47,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1366342423, now seen corresponding path program 1 times [2023-11-29 02:00:47,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:47,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049142528] [2023-11-29 02:00:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:47,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:47,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:47,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049142528] [2023-11-29 02:00:47,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049142528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:47,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:47,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:00:47,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914487308] [2023-11-29 02:00:47,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:47,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:00:47,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:47,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:00:47,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:00:47,880 INFO L87 Difference]: Start difference. First operand 283 states and 391 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:48,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:48,242 INFO L93 Difference]: Finished difference Result 1173 states and 1664 transitions. [2023-11-29 02:00:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:00:48,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-11-29 02:00:48,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:48,244 INFO L225 Difference]: With dead ends: 1173 [2023-11-29 02:00:48,244 INFO L226 Difference]: Without dead ends: 954 [2023-11-29 02:00:48,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:00:48,245 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 642 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:48,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1808 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:00:48,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2023-11-29 02:00:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 290. [2023-11-29 02:00:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.3840830449826989) internal successors, (400), 289 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 400 transitions. [2023-11-29 02:00:48,270 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 400 transitions. Word has length 88 [2023-11-29 02:00:48,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:48,270 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 400 transitions. [2023-11-29 02:00:48,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:48,270 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 400 transitions. [2023-11-29 02:00:48,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 02:00:48,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:48,271 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] [2023-11-29 02:00:48,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 02:00:48,271 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:48,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:48,272 INFO L85 PathProgramCache]: Analyzing trace with hash -423867063, now seen corresponding path program 1 times [2023-11-29 02:00:48,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:48,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835856026] [2023-11-29 02:00:48,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:48,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:49,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:49,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835856026] [2023-11-29 02:00:49,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835856026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:49,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:49,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:00:49,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621067805] [2023-11-29 02:00:49,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:49,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:00:49,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:49,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:00:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:00:49,141 INFO L87 Difference]: Start difference. First operand 290 states and 400 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:49,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:49,532 INFO L93 Difference]: Finished difference Result 1084 states and 1551 transitions. [2023-11-29 02:00:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:00:49,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-29 02:00:49,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:49,534 INFO L225 Difference]: With dead ends: 1084 [2023-11-29 02:00:49,534 INFO L226 Difference]: Without dead ends: 858 [2023-11-29 02:00:49,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:00:49,535 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 898 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:49,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1811 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:00:49,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2023-11-29 02:00:49,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 301. [2023-11-29 02:00:49,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.3866666666666667) internal successors, (416), 300 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 416 transitions. [2023-11-29 02:00:49,558 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 416 transitions. Word has length 89 [2023-11-29 02:00:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:49,558 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 416 transitions. [2023-11-29 02:00:49,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 416 transitions. [2023-11-29 02:00:49,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 02:00:49,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:49,559 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] [2023-11-29 02:00:49,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 02:00:49,559 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:49,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:49,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1627116935, now seen corresponding path program 1 times [2023-11-29 02:00:49,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:49,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577083942] [2023-11-29 02:00:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:49,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:51,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577083942] [2023-11-29 02:00:51,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577083942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:51,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:51,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2023-11-29 02:00:51,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196183679] [2023-11-29 02:00:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:51,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 02:00:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 02:00:51,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=930, Unknown=0, NotChecked=0, Total=992 [2023-11-29 02:00:51,011 INFO L87 Difference]: Start difference. First operand 301 states and 416 transitions. Second operand has 32 states, 32 states have (on average 2.78125) internal successors, (89), 32 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:04:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:01,209 INFO L93 Difference]: Finished difference Result 9744 states and 13772 transitions. [2023-11-29 02:04:01,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1541 states. [2023-11-29 02:04:01,209 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 32 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-29 02:04:01,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:01,223 INFO L225 Difference]: With dead ends: 9744 [2023-11-29 02:04:01,223 INFO L226 Difference]: Without dead ends: 9518 [2023-11-29 02:04:01,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1570 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1568 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272112 ImplicationChecksByTransitivity, 180.4s TimeCoverageRelationStatistics Valid=194856, Invalid=2268474, Unknown=0, NotChecked=0, Total=2463330 [2023-11-29 02:04:01,358 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 55434 mSDsluCounter, 6505 mSDsCounter, 0 mSdLazyCounter, 4131 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55434 SdHoareTripleChecker+Valid, 6732 SdHoareTripleChecker+Invalid, 4860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 4131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:01,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55434 Valid, 6732 Invalid, 4860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [729 Valid, 4131 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-29 02:04:01,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9518 states. [2023-11-29 02:04:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9518 to 316. [2023-11-29 02:04:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.3904761904761904) internal successors, (438), 315 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:04:01,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 438 transitions. [2023-11-29 02:04:01,410 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 438 transitions. Word has length 89 [2023-11-29 02:04:01,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:01,410 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 438 transitions. [2023-11-29 02:04:01,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 32 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:04:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 438 transitions. [2023-11-29 02:04:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 02:04:01,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:01,411 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] [2023-11-29 02:04:01,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 02:04:01,411 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:01,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash -239931347, now seen corresponding path program 1 times [2023-11-29 02:04:01,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:01,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281719915] [2023-11-29 02:04:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:01,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:04:02,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:02,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281719915] [2023-11-29 02:04:02,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281719915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:02,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:02,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:04:02,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842671233] [2023-11-29 02:04:02,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:02,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:04:02,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:02,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:04:02,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:04:02,106 INFO L87 Difference]: Start difference. First operand 316 states and 438 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:04:02,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:02,497 INFO L93 Difference]: Finished difference Result 1289 states and 1833 transitions. [2023-11-29 02:04:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:04:02,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-29 02:04:02,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:02,499 INFO L225 Difference]: With dead ends: 1289 [2023-11-29 02:04:02,499 INFO L226 Difference]: Without dead ends: 1051 [2023-11-29 02:04:02,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:04:02,500 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 655 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:02,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 2443 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:04:02,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2023-11-29 02:04:02,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 325. [2023-11-29 02:04:02,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.3888888888888888) internal successors, (450), 324 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:04:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 450 transitions. [2023-11-29 02:04:02,521 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 450 transitions. Word has length 89 [2023-11-29 02:04:02,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:02,521 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 450 transitions. [2023-11-29 02:04:02,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:04:02,521 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 450 transitions. [2023-11-29 02:04:02,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 02:04:02,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:02,522 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] [2023-11-29 02:04:02,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 02:04:02,522 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:02,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2046982929, now seen corresponding path program 1 times [2023-11-29 02:04:02,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:02,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734109287] [2023-11-29 02:04:02,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:02,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:04:03,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:03,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734109287] [2023-11-29 02:04:03,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734109287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:03,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:03,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:04:03,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455023805] [2023-11-29 02:04:03,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:03,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:04:03,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:04:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:04:03,051 INFO L87 Difference]: Start difference. First operand 325 states and 450 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:04:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:03,175 INFO L93 Difference]: Finished difference Result 790 states and 1112 transitions. [2023-11-29 02:04:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:04:03,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-29 02:04:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:03,176 INFO L225 Difference]: With dead ends: 790 [2023-11-29 02:04:03,176 INFO L226 Difference]: Without dead ends: 520 [2023-11-29 02:04:03,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:04:03,177 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 571 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:03,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 516 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:04:03,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-11-29 02:04:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 314. [2023-11-29 02:04:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.3833865814696487) internal successors, (433), 313 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:04:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 433 transitions. [2023-11-29 02:04:03,197 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 433 transitions. Word has length 89 [2023-11-29 02:04:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:03,197 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 433 transitions. [2023-11-29 02:04:03,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:04:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 433 transitions. [2023-11-29 02:04:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 02:04:03,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:03,198 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] [2023-11-29 02:04:03,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 02:04:03,198 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:03,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:03,198 INFO L85 PathProgramCache]: Analyzing trace with hash 633656359, now seen corresponding path program 1 times [2023-11-29 02:04:03,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:03,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049942420] [2023-11-29 02:04:03,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:03,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:04:03,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:03,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049942420] [2023-11-29 02:04:03,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049942420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:03,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:03,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:04:03,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295761454] [2023-11-29 02:04:03,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:03,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:04:03,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:03,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:04:03,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:04:03,994 INFO L87 Difference]: Start difference. First operand 314 states and 433 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:04:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:04,358 INFO L93 Difference]: Finished difference Result 1153 states and 1648 transitions. [2023-11-29 02:04:04,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:04:04,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-29 02:04:04,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:04,359 INFO L225 Difference]: With dead ends: 1153 [2023-11-29 02:04:04,359 INFO L226 Difference]: Without dead ends: 908 [2023-11-29 02:04:04,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:04:04,360 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 941 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:04,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1829 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:04:04,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2023-11-29 02:04:04,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 325. [2023-11-29 02:04:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.3858024691358024) internal successors, (449), 324 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:04:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 449 transitions. [2023-11-29 02:04:04,379 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 449 transitions. Word has length 90 [2023-11-29 02:04:04,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:04,379 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 449 transitions. [2023-11-29 02:04:04,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:04:04,379 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 449 transitions. [2023-11-29 02:04:04,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 02:04:04,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:04,379 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] [2023-11-29 02:04:04,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-29 02:04:04,380 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:04,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:04,380 INFO L85 PathProgramCache]: Analyzing trace with hash 656288613, now seen corresponding path program 1 times [2023-11-29 02:04:04,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:04,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623375475] [2023-11-29 02:04:04,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:04,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:04:06,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:06,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623375475] [2023-11-29 02:04:06,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623375475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:06,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:06,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2023-11-29 02:04:06,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937873986] [2023-11-29 02:04:06,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:06,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 02:04:06,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:06,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 02:04:06,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=1122, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 02:04:06,242 INFO L87 Difference]: Start difference. First operand 325 states and 449 transitions. Second operand has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:09:37,262 INFO L93 Difference]: Finished difference Result 12301 states and 17449 transitions. [2023-11-29 02:09:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2042 states. [2023-11-29 02:09:37,262 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-29 02:09:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:09:37,279 INFO L225 Difference]: With dead ends: 12301 [2023-11-29 02:09:37,279 INFO L226 Difference]: Without dead ends: 12056 [2023-11-29 02:09:37,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2074 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2072 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2235776 ImplicationChecksByTransitivity, 316.0s TimeCoverageRelationStatistics Valid=323772, Invalid=3975630, Unknown=0, NotChecked=0, Total=4299402 [2023-11-29 02:09:37,532 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 74215 mSDsluCounter, 6847 mSDsCounter, 0 mSdLazyCounter, 5025 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74215 SdHoareTripleChecker+Valid, 7063 SdHoareTripleChecker+Invalid, 5992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 5025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:09:37,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74215 Valid, 7063 Invalid, 5992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [967 Valid, 5025 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-11-29 02:09:37,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12056 states. [2023-11-29 02:09:37,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12056 to 340. [2023-11-29 02:09:37,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.3893805309734513) internal successors, (471), 339 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 471 transitions. [2023-11-29 02:09:37,593 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 471 transitions. Word has length 90 [2023-11-29 02:09:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:09:37,594 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 471 transitions. [2023-11-29 02:09:37,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5714285714285716) internal successors, (90), 35 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 471 transitions. [2023-11-29 02:09:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 02:09:37,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:09:37,595 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] [2023-11-29 02:09:37,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-29 02:09:37,595 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:09:37,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:37,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1524070133, now seen corresponding path program 1 times [2023-11-29 02:09:37,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:37,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764996564] [2023-11-29 02:09:37,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:37,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:09:38,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:38,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764996564] [2023-11-29 02:09:38,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764996564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:38,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:09:38,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:09:38,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400302188] [2023-11-29 02:09:38,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:38,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:09:38,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:38,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:09:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:09:38,362 INFO L87 Difference]: Start difference. First operand 340 states and 471 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:09:38,782 INFO L93 Difference]: Finished difference Result 1389 states and 1978 transitions. [2023-11-29 02:09:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:09:38,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-29 02:09:38,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:09:38,785 INFO L225 Difference]: With dead ends: 1389 [2023-11-29 02:09:38,785 INFO L226 Difference]: Without dead ends: 1132 [2023-11-29 02:09:38,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:09:38,786 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 497 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:09:38,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 2314 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:09:38,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2023-11-29 02:09:38,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 349. [2023-11-29 02:09:38,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.3879310344827587) internal successors, (483), 348 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:38,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 483 transitions. [2023-11-29 02:09:38,806 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 483 transitions. Word has length 90 [2023-11-29 02:09:38,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:09:38,807 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 483 transitions. [2023-11-29 02:09:38,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 483 transitions. [2023-11-29 02:09:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 02:09:38,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:09:38,807 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] [2023-11-29 02:09:38,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-29 02:09:38,808 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:09:38,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:38,808 INFO L85 PathProgramCache]: Analyzing trace with hash 502255309, now seen corresponding path program 1 times [2023-11-29 02:09:38,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:38,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600146094] [2023-11-29 02:09:38,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:38,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:09:39,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:39,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600146094] [2023-11-29 02:09:39,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600146094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:39,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:09:39,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:09:39,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220616754] [2023-11-29 02:09:39,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:39,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:09:39,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:39,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:09:39,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:09:39,280 INFO L87 Difference]: Start difference. First operand 349 states and 483 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:39,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:09:39,341 INFO L93 Difference]: Finished difference Result 873 states and 1233 transitions. [2023-11-29 02:09:39,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:09:39,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-29 02:09:39,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:09:39,343 INFO L225 Difference]: With dead ends: 873 [2023-11-29 02:09:39,343 INFO L226 Difference]: Without dead ends: 584 [2023-11-29 02:09:39,344 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 02:09:39,344 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 316 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:09:39,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 659 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:09:39,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-11-29 02:09:39,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 338. [2023-11-29 02:09:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.370919881305638) internal successors, (462), 337 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 462 transitions. [2023-11-29 02:09:39,365 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 462 transitions. Word has length 90 [2023-11-29 02:09:39,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:09:39,365 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 462 transitions. [2023-11-29 02:09:39,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:39,366 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 462 transitions. [2023-11-29 02:09:39,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:09:39,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:09:39,366 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] [2023-11-29 02:09:39,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-29 02:09:39,366 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:09:39,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:39,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1144313283, now seen corresponding path program 1 times [2023-11-29 02:09:39,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:39,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744666140] [2023-11-29 02:09:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:39,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:09:40,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:40,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744666140] [2023-11-29 02:09:40,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744666140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:40,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:09:40,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:09:40,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148467343] [2023-11-29 02:09:40,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:40,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:09:40,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:09:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:09:40,230 INFO L87 Difference]: Start difference. First operand 338 states and 462 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:09:40,542 INFO L93 Difference]: Finished difference Result 1222 states and 1729 transitions. [2023-11-29 02:09:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:09:40,542 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-11-29 02:09:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:09:40,544 INFO L225 Difference]: With dead ends: 1222 [2023-11-29 02:09:40,544 INFO L226 Difference]: Without dead ends: 958 [2023-11-29 02:09:40,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:09:40,545 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 836 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:09:40,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1530 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:09:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2023-11-29 02:09:40,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 349. [2023-11-29 02:09:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.3735632183908046) internal successors, (478), 348 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:40,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 478 transitions. [2023-11-29 02:09:40,563 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 478 transitions. Word has length 91 [2023-11-29 02:09:40,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:09:40,563 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 478 transitions. [2023-11-29 02:09:40,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:09:40,564 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 478 transitions. [2023-11-29 02:09:40,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:09:40,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:09:40,565 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] [2023-11-29 02:09:40,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-29 02:09:40,565 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:09:40,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:09:40,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1082273669, now seen corresponding path program 1 times [2023-11-29 02:09:40,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:09:40,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040142657] [2023-11-29 02:09:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:09:40,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:09:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:09:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:09:42,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:09:42,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040142657] [2023-11-29 02:09:42,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040142657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:09:42,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:09:42,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2023-11-29 02:09:42,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628717662] [2023-11-29 02:09:42,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:09:42,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 02:09:42,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:09:42,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 02:09:42,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1332, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 02:09:42,826 INFO L87 Difference]: Start difference. First operand 349 states and 478 transitions. Second operand has 38 states, 38 states have (on average 2.3947368421052633) internal successors, (91), 38 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)